2.1 CPU Module Performance Specifications
2.1.3 AnUCPU Module Performance Specifications
This section explains the performance specifications and devices of the AnUCPU.
Table 2.3 Performance Specifications
Performance Item
A2UCPU A2UCPU-S1 A3UCPU A4UCPU Remarks Control system Stored program, repeated operation
I/O control method Refresh method
Instructions to enable partial direct I/O are available.
Language dedicated to sequence control
Programming language Combined use of relay symbol type, logic symbolic language and MELSAP-II (SFC)
Processing speed
(Sequence instruction) 0.2 μs/step 0.15 μs/step
Constant scan (program start at specified intervals)
Can be set between 10 ms and 190 ms in 10 ms increments
Set in special register D9020.
Memory capacity
Capacity of installed memory cassette (Max. 448 kbytes)
Capacity of installed memory cassette (Max. 1024 kbytes) Main sequence
program Max. 14k steps Max. 30k steps Program
capacity Sub-sequence
program Absent Max. 30k
steps
Max. 30k steps × 3
Set in parameters.
I/O device points 8192 points (X/Y0 to 1FFF)
The number of points usable in the program
I/O points
512 points (X/Y0 to 1FF)
1024 points (X/Y0 to 3FF)
2048 points (X/Y0 to 7FF)
4096 points (X/Y0 to FFF)
The number of points which can be used for accessibility to actual I/O modules
Table 2.3 Performance Specifications (continued)
Performance Item
A2UCPU A2UCPU-S1 A3UCPU A4UCPU Remarks Output mode switching
at STOP → RUN
Selection of re-output of operation state before STOP
(default)/output after operation execution Set in parameters.
Self-diagnostic functions
Watchdog timer (watchdog timer 200 msec fixed)
Memory error detection, CPU error detection, I/O error detection, battery error detection, etc.
Operation mode at
error occurrence Stop or continue selectable Set in parameters.
Starting method at RUN
Initial start (Automatic restart when "RUN" switch is moved to ON position at power-on, at power restoration after power failure)
Latch (power failure compensation) range
Defaults to L1000 to L2047 (Latch range can be set for L, B, T, C, D and W relays.)
Set range in parameters.
Remote RUN/PAUSE contact
One RUN contact and one PAUSE contact can be set
within the range from X0 to X1FFF Set in parameters.
Step RUN Can execute or stop sequence program operation.
Interrupt processing Interrupt program can be run in response to a signal from an interrupt unit or by a constant-cycle interrupt signal.
Data link MELSECNET/10, MELSECNET (II) Allowable momentary
power failure time Depends on used power supply module 5 VDC internal power
consumption 0.4 A 0.4 A 0.5 A 0.5 A
Weight 0.5 kg 0.5 kg 0.6 kg 0.6 kg
External dimensions 250(H) × 79.5(W) × 121(D) (9.84 × 3.13 × 4.76) mm (inch)
CAUTION
When the existing system software package and peripheral devices are used, the
applicable device range is limited.
3. EMC DIRECTIVES AND LOW VOLTAGE DIRECTIVES
The products sold in the European countries have been required by law to comply with the EMC Directives and Low Voltage Directives of the EU Directives since 1996 and 1997, respectively.
The manufacturers must confirm by self-declaration that their products meet the requirements of these directives, and put the CE mark on the products.
3.1 Requirements for Compliance with EMC Directives
The EMC Directives specifies emission and immunity criteria and requires the products to meet both of them, i.e., not to emit excessive electromagnetic interference (emission): to be immune to electromagnetic interference outside (immunity).
Guidelines for complying the machinery including MELSEC-A series PLC with the EMC Directives are provided in Section 3.1.1 to 3.1.6 below.
The guidelines are created based on the requirements of the regulations and relevant standards, however, they do not guarantee that the machinery constructed according to them will not comply with the Directives.
Therefore, the manufacturer of the machinery must finally determine how to make it
comply with the EMC Directives: if it is actually compliant with the EMC Directives.
3.1.1 EMC standards
When the PLC is installed following the directions given in this manual its EMC performance is compliant to the following standards and levels as required by the EMC directive.
Specifications Test Item Test Description Standard Values EN55011 *2
Radiated noise
Measure the emission released by the product.
30M-230 M Hz QP: 30dBμ V/m (30m measurement) *1
230M-1000MHz QP: 37dBμ V/m (30m measurement) *1 EN61000-6-4
(2001)
EN55011 *2 Conduction noise
Measure the emission released by the product to the power line.
150k-500kHz QP:
79dB, Mean: 66dB*1 500k-30MHz QP:
73dB, Mean: 60dB *1 EN61000-4-2 *2
Static electricity immunity
Immunity test by applying static electricity to the module enclosure.
4kV contact discharge 8kV air discharge EN61000-4-4 *2
First transient burst noise
Immunity test by applying burst noise to the power line and signal line.
2kV Power line 1kv Signal line EN61000-4-12 *2
Damped oscillatory wave
Immunity test in which a damped oscillatory wave is superimposed on the power line.
1kv EN61131-2/A12
(2000)
EN61000-4-3 *2 Radiated
electromagnetic field
Immunity test by applying a radiated electric field to the product.
10V/m, 26-1000MHz EN61000-6-2
(2001)
EN61000-4-6 *2 Conduction noise
Immunity test by inducting an electromagnetic field in the power line signal line.
10 V/ms, 0.15-80MHZ, 80% AM modulation@1kHz
*1: QP: Quasi-peak value, Mean: Average value
*2: The PLC is an open type device (device installed to another device) and must be installed in a conductive control panel.
The tests for the corresponding items were performed while the PLC was
installed inside the control panel.
3.1.2 Installation instructions for EMC Directive
The PLC is open equipment and must be installed within a control cabinet for use.* This not only ensures safety but also ensues effective shielding of PLC-generated electromagnetic noise.
* : Also, each network remote station needs to be installed inside the control panel.
However, the waterproof type remote station can be installed outside the control panel.
(1) Control cabinet
(a) Use a conductive control cabinet.
(b) When attaching the control cabinet's top plate or base plate, mask painting and weld so that good surface contact can be made between the cabinet and plate.
(c) To ensure good electrical contact with the control cabinet, mask the paint on the installation bolts of the inner plate in the control cabinet so that contact between surfaces can be ensured over the widest possible area.
(d) Earth the control cabinet with a thick wire so that a low impedance connection to ground can be ensured even at high frequencies.
(e) Holes made in the control cabinet must be 10 cm (3.94 in.) diameter or less. If the holes are 10 cm (3.94 in.) or larger, radio frequency noise may be emitted.
In addition, because radio waves leak through a clearance between the control panel door and the main unit, reduce the clearance as much as practicable.
The leakage of radio waves can be suppressed by the direct application of an EMI gasket on the paint surface.
Our tests have been carried out on a panel having the damping characteristics of 37 dB max. and 30 dB mean (measured by 3 m method with 30 to 300 MHz).
(2) Connection of power and earth wires
Earthing and power supply wires for the PLC system must be connected as described below.
(a) Provide an earthing point near the power supply module. Earth the power supply's LG and FG terminals (LG: Line Ground, FG: Frame Ground) with the thickest and shortest wire possible. (The wire length must be 30 cm (11.81 in.) or shorter.) The LG and FG terminals function is to pass the noise generated in the PLC system to the ground, so an impedance that is as low as possible must be ensured. In addition, make sure to wire the ground cable short as the wires are used to relieve the noise, the wire itself carries large noise content and thus short wiring means that the wire is prevented from acting as an antenna.
(b) The earth wire led from the earthing point must be twisted with the power
supply wires. By twisting with the earthing wire, noise flowing from the
power supply wires can be relieved to the earthing. However, if a filter is
installed on the power supply wires, the wires and the earthing wire may
not need to be twisted.
3.1.3 Cables
The cables pulled out of the control panel contain a high frequency noise component. On the outside of the control panel, therefore, they serve as antennas to emit noise.
Ensure to use shielded cables for the cables, which are connected to the I/O modules, special modules and those pulled out to outside of the control panel.
Mounting ferrite core is not required except some types of CPU however, noise emanated via the cable can be restrained using it.
The use of a shielded cable also increases noise resistance. The signal lines (including common line) connected to the PLC input/output modules and intelligent modules use shielded cables to assure noise resistance, as a condition, standardized on EN61131-2/A12(2000).
If a shielded cable is not used or not earthed correctly, the noise resistance will be less than the rated value
(1) Earthing of shielded of cables
(a) Earth the shield of the shielded cable as near the unit as possible taking care so that the earthed cables are not induced electromagnetically by the cable to be earthed.
(b) Take appropriate measures so that the shield section of the shielded cable from which the outer cover was partly removed for exposure is earthed to the control panel on an increased contact surface. A clamp may also be used as shown in the figure below. In this case, however, apply a cover to the painted inner wall surface of the control panel which comes in contact with the clamp.
Shield section
Screw
Shielded cable Paint mask
Clamp fitting
Note) The method of earthing by soldering a wire onto the shield section of the shielded cable as shown below is not recommended. The high frequency impedance will increase and the shield will be ineffective.
Shielded cable Wire
Crimp terminal
(2) MELSECNET (II) and MELSECNET/10 units
(a) Use a double-shielded coaxial cable for the MELSECNET unit which uses coaxial cables. Noise in the range of 30 MHz or higher in radiation noise can be suppressed by the use of double-shielded coaxial cables (Mitsubishi Cable: 5C-2V-CCY). Earth the outer shield to the ground.
The precautions on shielding to be followed are the same as those stated in item (1) above.
Earth this section Shield
(b) Ensure to attach a ferrite core to the double-shielded coaxial cable connected to the MELSECNET unit. In addition, position the ferrite core on each cable near the outlet of the control panel. TDK-make ZCAT3035 ferrite core is recommended.
(3) Ethernet module
Precautions to be followed when AUI cables and coaxial cables are used are described below.
(a) Ensure to earth also the AUI cables connected to the 10BASE5 connectors of the A1SJ71QE71-B5. Because the AUI cable is of the shielded type, as shown in the figure below, partly remove the outer cover of it, and earth the exposed shield section to the ground on the widest contact surface.
Shield AUI cable
(b) Use shielded twisted pair cables as the twisted pair cables*1 connected to the 10BASE-T connectors. For the shielded twisted pair cables, strip part of the outer cover and earth the exposed shield section to the ground on the widest contact surface as shown below.
Shield
Shielded twisted pair cables
Refer to (1) for the earthing of the shield.
*1: Make sure to install a ferrite core for the cable.
As a ferrite core, ZCAT2035 manufactured by TDK is recommended.
(c) Always use double-shielded coaxial cables as the coaxial cables*2 connected to the 10BASE2 connectors. Earth the double-shielded coaxial cable by connecting its outer shield to the ground.
Earth here Shield
Refer to (1) for the earthing of the shield.
*2: Make sure to install a ferrite core for the cable.
As a ferrite core, ZCAT2035 manufactured by TDK is recommended.
Ethernet is the registered trademark of XEROX, Co.,LTD (4) I/O and other communication cables
For the I/O signal lines (including common line) and other communication cables (RS-232, RS-422, etc), if extracted to the outside of the control panel, also ensure to earth the shield section of these lines and cables in the same manner as in item (1) above.
(5) Positioning Modules
Precautions to be followed when the machinery conforming to the EMC Directive is configured using the AD75P -S3 are described below.
(a) When wiring with a 2 m (6.56 ft.) or less cable
• Ground the shield section of the external wiring cable with the cable clamp.
(Ground the shield at the closest location to the AD75 external wiring connector.)
• Wire the external wiring cable to the drive unit and external device with the shortest practicable length of cable.
• Install the drive unit in the same panel.
Power supply module CPU module AD75 module
Drive unit External wiring connector
External wiring cable (within 2m (6.56 ft.)) Cable clamp
(b) When wiring with cable that exceeds 2 m (6.56 ft.), but is 10 m (32.81 ft.) or less
• Ground the shield section of the external wiring cable with the cable clamp.
(Ground the shield at the closest location to the AD75 external wiring connector.)
• Install a ferrite core.
• Wire the external wiring cable to the drive unit and external device with the shortest practicable length of cable.
Power supply module CPU module AD75 module
Drive unit External wiring connector
Ferrite core
External wiring cable (2m to 10m (6.56 ft. to 32.81 ft.)) Cable clamp
(c) Ferrite core and cable clamp types and required quantities
• Cable clamp
Type : AD75CK (Mitsubishi Electric)
• Ferrite core
Type : ZCAT3035-1330 (TDK ferrite core)
• Required quantity
Required Qty Cable length Prepared part
1 axis 2 axes 3 axes
Within 2 m (6.56 ft.) AD75CK 1 1 1
AD75CK 1 1 1
2 m (6.56 ft.) to 10m (32.81 ft.)
ZCAT3035-1330 1 2 3
AD75
Inside control panel
AD75CK 20 to 30cm(7.87 to 11.81inch)
(6) CC-Link Module
(a) Be sure to ground the cable shield that is connected to the CC-Link
module close to the exit of control panel or to any of the CC-Link stations within 30 cm (11.81 in.) from the module or stations.
The CC-Link dedicated cable is a shielded cable. As shown in the
illustration below, remove a portion of the outer covering and ground as large a surface area of the exposed shield part as possible.
CC-Link dedicated cable Shield
(b) Always use the specified CC-Link dedicated cable.
(c) The CC-Link module, the CC-Link stations and the FG line inside the control panel should be connected at the FG terminal as shown in the diagram below.
[Simplified diagram]
Terminal resistor
Master module Remote module Local module
Terminal resistor CC-Link
dedicated cable CC-Link
dedicated cable DA
DB DG SLD
FG
DA DB DG SLD
FG
DA DB DG SLD
FG
(Blue) (White) (Yellow)
(d) Power line connecting to the external power supply terminal (compliant with I/O power port of CE standard) should be 30m (98.43 ft.) or less.
Power line connecting to module power supply terminal (compliant with main power port of CE standard) should be 10m (32.81 ft.) or less.
(e) A power line connecting to the analog input of the following modules should be 30cm or less.
• AJ65BT-64RD3
• AJ65BT-64RD4
• AJ65BT-68TD
3.1.4 Power supply module
The precautions required for each power supply module are described below.
Always observe the items noted as precautions.
Model name Precautions
A61P, A61PN, A62P N/A
A63P Use a CE-compliant 24VDC power supply in the control panel.
A61PEU, A62PEU, A1NCPU (Power supply part)
Make sure to short and ground the LG and FG
terminals.
3.1.5 Ferrite core
Use of ferrite cores is effective in reducing the conduction noise in the band of about 10 MHz and radiated noise in 30 to 100 MHz band.
It is recommended to attach ferrite cores when the shield of the shielded cable coming out of control panel does not work effectively, or when emission of the conduction noise from the power line has to be suppressed.*1 The ferrite cores used in our tests are TDK's ZCAT3035.
It should be noted that the ferrite cores should be fitted to the cables in the position immediately before they are pulled out of the enclosure. If the fitting position is improper, the ferrite will not produce any effect.
1:To response with CE(EN61131-2/A12), make sure to mount 2 or more ferrite cores onto the power supply line. The mounting position should be as near the power supply module as possible.
Ferrite core
Type: ZCAT2235-1030A (TDK ferrite core)
3.1.6 Noise filter (power supply line filter)
A noise filter is a component which has an effect on conducted noise. With the exception of some models, it is not required to fit the noise filter to the power supply line, but fitting it can further suppress noise. (The noise filter has the effect of reducing conducted noise of 10 M Hz or less.) Use any of the following noise filters (double type filters) or equivalent.
Model name FN343-3/01 FN660-6/06 ZHC2203-11
Manufacturer SCHAFFNER SCHAFFNER TDK
Rated current 3 A 6 A 3 A
Rated voltage 250 V
The precautions required when installing a noise filter are described below.
(1) Do not bundle the wires on the input side and output side of the noise filter.
When bundled, the output side noise will be induced into the input side wires from which the noise was filtered.
Filter
Induction
Output side (device side) Input side
(power supply side)
Filter
Output side (device side) Input side
(power supply side)
(a) The noise will be
included when the input and output wires are bundled.
(b) Separate and lay the input and output wires.
(2) Earth the noise filter earthing terminal to the control cabinet with the
shortest wire possible (approx. 10 cm (3.94 in.)).
3.2 Requirements for Compliance with Low Voltage Directives
The Low Voltage Directives apply to the electrical equipment operating from 50 to 1000VAC or 75 to 1500VDC; the manufacturer must ensure the adequate safety of the equipment.
Guidelines for installation and wiring of MELSEC-A series PLC are provided in Section 3.2.1 to 3.2.7 for the purpose of compliance with the EMC Directives.
The guidelines are created based on the requirements of the regulations and relevant standards, however, they do not guarantee that the machinery constructed according to them will comply with the Directives.
Therefore, the manufacturer of the machinery must finally determine how to make it comply with the EMC Directives: if it is actually compliant with the EMC Directives.
3.2.1 Standard applied for MELSEC-A series PLC
The standard applied for MELSEC-A series PLC series is EN61010-1 safety of devices used in measurement rooms, control rooms, or laboratories.
For the modules which operate with the rated voltage of 50 VAC/75 VDC or above, we have developed new models that conform to the above standard.
For the modules which operate with the rated voltage under 50 VAC/75 VDC, the conventional models can be used, because they are out of the low voltage directive application range.
3.2.2 Precautions when using the MELSEC-A series PLC Module selection
(1) Power module
For a power module with rated input voltage of 100/200 VAC, select a model in which the internal part between the first order and second order is intensively insulated, because it generates hazardous voltage (voltage of 42.4 V or more at the peak) area.
For a power module with 24 VDC rated input, a conventional model can be used.
(2) I/O module
For I/O module with rated input voltage of 100/200 VAC, select a model in which the internal area between the first order and second order is
intensively insulated, because it has hazardous voltage area.
For I/O module with 24 VDC rated input, a conventional model can be used.
(3) CPU module, memory cassette, base unit
Conventional models can be used for these modules, because they only have a 5 VDC circuit inside.
(4) Special function module
Conventional models can be used for the special modules including analog module, network module, and positioning module, because the rated
voltage is 24 VDC or smaller.
(5) Display device
Use the CE-marked product.
3.2.3 Power supply
The insulation specification of the power module was designed assuming installation category II. Be sure to use the installation category II power supply to the PLC.
The installation category indicates the durability level against surge voltage
generated by a thunderbolt. Category I has the lowest durability; category IV has the highest durability.
Category III Category II Category I Category IV
Figure 1: Installation Category
Category II indicates a power supply whose voltage has been reduced by two or more levels of isolating transformers from the public power distribution.
3.2.4 Control panel
Because the PLC is an open device (a device designed to be stored within another module), be sure to use it after storing in the control panel.
(1) Electrical shock prevention
In order to prevent persons who are not familiar with the electric facility such as the operators from electric shocks, the control panel must have the
following functions:
(a) The control panel must be equipped with a lock so that only the
personnel who has studied about the electric facility and have enough knowledge can open it.
(b) The control panel must have a structure which automatically stops the power supply when the box is opened.
(c) For electric shock protection, use IP20 or greater control panel.
(2) Dustproof and waterproof features
The control panel also has the dustproof and waterproof functions.
Insufficient dustproof and waterproof features lower the insulation withstand voltage, resulting in insulation destruction. The insulation in our PLC is designed to cope with the pollution level 2, so use in an environment with pollution level 2 or below.
Pollution level 1: An environment where the air is dry and conductive dust does not exist.
Pollution level 2: An environment where conductive dust
does not usually exist, but occasional temporary conductivity occurs due to the accumulated dust. Generally, this is the level for inside the control panel equivalent to IP54 in a control room or on the floor of a typical factory.
Pollution level 3: An environment where conductive dust exits and conductivity may be generated due to the accumulated dust.
An environment for a typical factory floor.
Pollution level 4: Continuous conductivity may occur due to rain, snow, etc. An outdoor environment.
As shown above, the PLC can realize the pollution level 2 when stored in a
control panel equivalent to IP54.
3.2.5 Module installation
(1) Installing modules contiguously
In Q2AS series PLCs, the left side of each I/O module is left open. When installing an I/O module to the base, do not make any open slots between any two modules. If there is an open slot on the left side of a module with 100/200 VAC rating, the printed board which contains the hazardous
voltage circuit becomes bare. When it is unavoidable to make an open slot, be sure to install the blank module (AG60).
3.2.6 Grounding
There are two kinds of grounding terminals as shown below. Either grounding terminal must be used grounded.
Be sure to ground the protective grounding for the safety reasons.
Protective grounding : Maintains the safety of the PLC and improves the noise resistance.
Functional grounding : Improves the noise resistance.
3.2.7 External wiring
(1) Module power supply and external power supply
For the remote module which requires 24VDC as module power supply, the 5/12/24/48VDC I/O module, and the special function module which requires the external power supply, use the 5/12/24/48VDC circuit which is doubly insulated from the hazardous voltage circuit or use the power supply whose insulation is reinforced.
(2) External devices
When a device with a hazardous voltage circuit is externally connected to the PLC, use a model whose circuit section of the interface to the PLC is intensively insulated from the hazardous voltage circuit.
(3) Intensive insulation
Intensive insulation refers to the insulation with the dielectric withstand voltage shown in Table 1.
Table 1: Intensive Insulation Withstand Voltage (Installation Category II, source: IEC664)
Rated voltage of hazardous voltage area Surge withstand voltage (1.2/50 µs)
150 VAC or below 2500 V
300 VAC or below 4000 V
4. LOADING AND INSTALLATION 4.1 Installing Modules
4.1.1 Notes on handling the module
This section explains some notes on handling the CPU module, I/O module, special function module, power supply module, and base unit.
(1) Do not drop or allow any impact to the modules case, memory card, terminal block cover, or pin connector.
(2) Do not remove modules' printed circuit boards from the plastic casing.
(3) Use caution to prevent foreign matter, such as wire chips, falling into the module during wiring. If foreign matter enters the module, remove it.
(4) Tighten the module mounting (unnecessary in normal operating condition) and terminal block screws as indicated below.
Screw Tightening Torque Nxcm
Module mounting screws (M4 screw) (optional) 78 to 118
Terminal block screws 98 to 137
(5) To install a module, push it firmly into the base unit so that the latch engages properly. To remove a module, press the latch to disengage it from the base unit, then pull the module out (for details, refer to the relevant PC CPU User's Manual.
4.1.2 Installation environment
The CPU system should not be installed under the following environmental conditions:
(1) A location in which the ambient temperature falls outside the range of 0 to 55 degrees Celsius.
(2) A location in which the ambient humidity falls outside the range of 10 to 90%RH.
(3) A location in which condensation may occur due to drastic changes in
temperature.
(4) A location in which corrosive gas or flammable gas exists.
(5) A location in which the system is easily exposed to conductive powder, such as dust and iron filings, oil mist, salt, or organic solvent.
(6) A location exposed to direct sunlight.
(7) A location in which strong electrical or magnetic fields are generated.
(8) A location in which the module is exposed to direct vibration or impact.
4.1.3 Notes on installing the base unit
Take ease of operation, ease of maintenance, and environmental durability into consideration when you are installing the PLC on the panel.
(1) Mounting dimension
Mounting dimensions of each base unit are as follows.
CPU UNIT I/O0 I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7
POWER
Hs
Ws W
H
A38B
A32B A32B-S1 A35B A38B A62B A65B A68B A52B A55B A58B
W 247
(9.72)
268 (10.55)
382 (15.03)
480 (18.9)
238 (9.37)
352 (13.86)
466 (18.35)
183 (7.2)
297 (11.69)
411 (16.18) Ws 227
(8.93)
248 (9.76)
362 (14.25)
460 (18.11)
218 (8.58)
332 (13.07)
446 (17.6)
163 (6.42)
277 (10.9)
391 (15.4)
H 250 (9.84)
Hs 200 (7.87)
Dimensions: mm (inch)
(2) Module installation position
To ensure proper ventilation and make module replacement easy, provide a clearance of 80mm (3.15in.) or more between the top of the unit and any surrounding structure or equipment.
(1.10 in.)28mm 39mm (1.54 in.) For coaxial
data link For optical data link
Main base unit Extension base unit80mm (3.15 in.) or more
*3 Parallel installation
Represents the ceiling of panel, wiring conduit, or component.
(3) A wiring conduit should be provided if required.
If its clearance above or below the programmable controller is less than indicated in the figure above, observe the following points:
(a) If the wiring conduit is installed above the programmable controller, its height must be no greater than 50 mm (1.97in.) to ensure good ventilation.
In addition, there should be adequate space between the programmable controller and the wiring conduit to allow module latches to be pressed.
It will not be possible to replace modules if their latches cannot be
pressed.
(b) If the wiring conduit is installed below the programmable controller, it should be installed so as to allow connection of the optical fiber cable or coaxial cable, taking the minimum bending radius of the cable into consideration.
Conduit (50mm (1.97 in.) or less)
Main base unit
Extension base unit
80mm (3.15 in.) or more
*2
*1
*3 Serial installation
Represents the ceiling of panel, wiring conduit, or component.
80mm (3.15 in.) or more
*1 : These dimensions vary depending on the length of the extension cable as follows:
AC06B cable... 450mm (17.71in.) or less AC12B cable... 1050mm (41.34in.) or less AC30B cable... 2850mm (112.20in.) or less
*2 : When a link module is not used... 50mm (1.97in.) or more When using φ4.5mm optical fiber cable,
or coaxial cable... 100mm (3.94in.) or more When using φ8.5mm optical fiber cable ... 130mm (5.12in.) or more
*3 : When a link module is not used... 50mm (1.97in.) or more When using φ4.5mm optical fiber cable,
or coaxial cable ... 100mm (3.94in.) or more
When using φ8.5mm optical fiber cable ... 130mm (5.12in.) or more
(4) Module installation direction
(a) Use the PLC in the following position for better ventilation and heat dissipation:
(b) Do not use the PLC in the following positions:
Vertical position Horizontal position
(5) Install the base unit on a level surface.
If the surface is not level, force may be applied to the printed wiring board, causing a malfunction.
(6) Install the unit far from any source of vibration, such as a large magnetic contactor and a no-fuse breaker on the same panel, or install it on a separate panel.
(7) Keep the following distance between the PLC and other devices (such as a contactor and a relay) in order to avoid the influence of radiated noise and heat:
y a device installed in front of the PLC ...100mm (3.94 inch) or more y a device installed on the right or left of the PLC ... 50mm (1.97 inch) or more
100mm (3.94 inch)
or more 50mm (1.97 inch)
or more Contactor and
relay, etc.
50mm (1.97 inch) or more
4.2 Fail-Safe Circuit Concept
When the PLC is powered ON and then OFF, improper outputs may be generated temporarily depending on the delay time and start-up time differences between the PLC power supply and the external power supply for the control target (especially, DC).
For example, if the external power supply for the control target is powered ON and then the PLC is powered ON, the DC output module may generate incorrect outputs temporarily upon the PLC power-ON. Therefore, it is required to build the circuit that energizes the PLC by priority.
The external power failure or PLC failure may lead to the system error.
In order to eliminate the possibility of the system error and ensure fail-safe operation, build the following circuit outside the PLC: emergency circuit, protection circuit and interlock circuit, as they could cause machine damages and accidents due to the abovementioned failures.
An example of system design, which is based on fail-safe concept, is provided
on the next page.
DANGER z Create a safety circuit outside the PLC to ensure the whole system will operate safely even if an external power failure or a PLC failure occurs.
Otherwise, incorrect output or malfunction may cause an accident.
(1) For an emergency stop circuit, protection circuit and interlock circuit that is designed for incompatible actions such as forward/reverse rotation or for damage
prevention such as the upper/lower limit setting in positioning, any of them must be created outside the PLC.
(2) When the PLC detects the following error conditions, it stops the operation and turn off all the outputs.
x The overcurrent protection device or overvoltage protection device of the power supply module is activated.
x The PLC CPU detects an error such as a watchdog timer error by the self-diagnostics function.
In the case of an error of a part such as an I/O control part that cannot be detected by the PLC CPU, all the outputs may turn on. In order to make all machines operate safely in such a case, set up a fail-safe circuit or a specific mechanism outside the PLC.
(3) Depending on the failure of the output module’s relay or transistor, the output status may remain ON or OFF incorrectly. For output signals that may lead to a serious accident, create an external monitoring circuit.
z Design a circuit so that the external power will be supplied after power-up of the PLC.
Activating the external power supply prior to the PLC may result in an accident due to incorrect output or malfunction.
z If load current more than the rating or overcurrent due to a short circuit in the load has flowed in the output module for a long time, it may cause a fire and smoke. Provide an
external safety device such as a fuse.
z For the operation status of each station at a communication error in data link, refer to the respective data link manual.
The communication error may result in an accident due to
incorrect output or malfunction.
DANGER z When controlling a running PLC (data modification) by connecting a peripheral device to the CPU module or a PC to a special function module, create an interlock circuit on sequence programs so that the whole system functions safely all the time.
Also, before performing any other controls (e.g. program modification, operating status change (status control)), read the manual carefully and ensure the safety.
In these controls, especially the one from an external device to a PLC in a remote location, some PLC side problem may not be resolved immediately due to failure of data
communications.
To prevent this, create an interlock circuit on sequence programs and establish corrective procedures for
communication failure between the external device and the PLC CPU.
z When setting up the system, do not allow any empty slot on the base unit.
If any slot is left empty, be sure to use a blank cover (AG60) or a dummy module (AG62) for it.
When using the extension base unit, A52B, A55B or A58B, attach the included dustproof cover to the module in slot 0.
Otherwise, internal parts of the module may be flied in the short circuit test or when an overcurrent or overvoltage is accidentally applied to external I/O section.
CAUTION z Do not install the control lines or communication cables together with the main circuit or power lines, or bring them close to each other.
Keep a distance of 100mm (3.9inch) or more between them.
Failure to do so may cause malfunctions due to noise.
z When an output module is used to control the lamp load,
heater, solenoid valve, etc., a large current (ten times larger
than the normal one) may flow at the time that the output
status changes from OFF to ON. Take some preventive
measures such as replacing the module with the one of a
suitable current rating.
(1) System design circuit example
Interlock circuit Constructs external interlock circuits for opposing operations such as forward and reverse rotation, and parts that could cause machine damage or accidents.
Switches the power supply to output devices OFF when the system stops:
At emergency stops At stops on reaching a limit
Power supply
Power supply
Switches the power supply to output devices OFF when the system stops:
Output for warning (lamp or buzzer)
Turn ON in RUN status by M9039
The setting for TM is the time taken to establish the DC input signal.
Output for warning (lamp or buzzer) Turned ON in RUN status by M9039 Fuse
Transformer
Fuse Transformer
AC system AC/DC system
CPU
M9006
M9039 Ym
Yn
Start/stop circuit Can be started by turning ON of RA1, which is the PC's RUN output.
DC power supply established signal
input CPU
M9006
DC power supply (-)(+)
Fuse
TM M10 N0 Program
Start Output unit
MC1 MC Stop
switch Input unit
Output unit Ym
Output module
Voltage relay recommended
Output unit
Stopswitch
At emergency stops At stops on reaching a limit
Input unit XM
The procedures used to switch on the power supply are indicated below.
AC system [1] Switch the power supply ON.
[2] Set the CPU module to RUN.
[3] Switch the start switch ON.
[4] The output devices are driven in accordance with the program when the magnetic
contactor (MC) comes ON.
AC/DC system [1] Switch the power supply ON.
[2] Set the CPU module to RUN.
[3] Switch RA2 ON when the DC power supply starts.
[4] Switch the timer (TM) ON when the DC power supply reaches working voltage.
(The set value for TM must be the time it takes for 100% establishment of the DC power after RA2 is switched ON. Make this set value 0.5 seconds.) [5] Switch the start switch ON.
[6] The output devices are driven in accord-ance with the program when the magnetic contactor (MC) comes ON.
(If a voltage relay is used at RA2, no timer (TM) is necessary in the program.)
(2) Fail-safe measures to cover the possibility of PLC failure
Problems with a CPU module and memory can be detected by the self diagnostics function. However, problems with I/O control area may not be detected by the CPU module.
In such cases, all I/O points turn ON or OFF depending on the problem, and normal operation and safety cannot be maintained.
Though Mitsubishi PLCs are manufactured under strict quality control, they may fail or malfunction due to unspecified reasons. To prevent the whole system failure, machine breakdown, and accidents, build a fail-safe circuit outside the PLC.
Examples of a system and its fail-safe circuitry are described below:
<System example>
Input
Output module for fail-safe purpose*1 CPU points16
YBF
points to
*1: The output module for fail-safe purpose should be mounted on the last slot of the system. (YB0 to YBF in the above system.)
Internal program M9032
T1 ON delay timer
1s T2
OFF delay timer *3 1s
External load
0.5s 0.5s
CPU module Output module
*2
MC to
*2: Since YB0 turns ON and OFF alternatively at 0.5 second intervals, use a contactless output module (a transistor is used in the above example).
*3: If an OFF delay timer (especially a miniature timer) is not available, use
ON delay timers to make a fail-safe circuit as shown below.
A fail-safe circuit built with ON delay timers
M9032
YB0
YB0
YB1 YB0
0.5s 0.5s
YBF 24V
0V
T1 M2
MC L
L
M M2 T2 M1 T1 1s
*4
1s M1
M1 M2 T2
Output module to
ON delay timer
ON delay timer Internal program
External load
CPU module
24VDC
*4: Use a solid state relay for the M1 relay.
4.3 Power Supply Connection
4.3.1 Performance Specification for Power Supply Modules (1) Normal power supply module
Table 4.1 Power Supply Module Specifications
Specifications Item
A61P A61PN A62P A63P A65P A66P A67P Base unit
loading position Power supply module loading slot
I/O module loading
slot
Power supply module loading slot
+10% +10% Input voltage
(170 to 264 VAC)
Input voltage distortion factor.
Within 5%
(Refer to Section 4.4) ⎯ Within 5%
(Refer to Section 4.4) ⎯ Max. input apparent
power 160 VA 155 VA 65 W 110 VA 95 VA 65 W
Inrush current 20 A, within 8 ms*4 100 A,
within 1 ms 20 A, within 8 ms*4 20 A, within 8 ms
5 VDC 8 A 5 A 8 A 2 A ⎯ 8 A
Rated output
current 24 VDC ⎯ 0.8 A ⎯ 1.5 A 1.2 A ⎯
5 VDC 8.8 A or higher 5.5 A or higher
8.5 A or higher
2.2 A or
higher ⎯ 8.5 A or
higher
*1
Overcurrent
protection 24 VDC ⎯ 1.2 A or
higher ⎯ 2.3 A or higher
1.7 A or
Overvoltage
protection 24 VDC ⎯
Efficiency 65 % or higher
Withstanding voltage 1500 VAC for 1 minute between all AC external terminals together and ground 500 VAC for 1 minute between all DC external terminals together and ground
Noise durability
Noise voltage 1500 Vp-p Noise width 1 s, Noise
frequency 25 to 60 Hz (noise simulator condition)
Noise voltage 500 Vp-p Noise width 1 s, Noise frequency 25 to 60 Hz (noise simulator
condition)
Noise voltage 1500 Vp-p Noise width 1 s, Noise frequency 25 to 60 Hz
(noise simulator condition)
Noise voltage 500 Vp-p Noise width 1 s, Noise frequency
25 to 60 Hz (noise simulator
condition) Insulation resistance 10 M or higher, measured with a 500 VDC insulation resistance tester
Table 4.1 Power Supply Module Specifications
Specifications Item
A61P A61PN A62P A63P A65P A66P A67P
Power indicator Power LED display
Terminal screw size M4 × 0.7 × 6 M3 × 0.5 × 6 M4 × 0.7 × 6
Applicable wire size 0.75 to 2 mm2
Applicable
solderless terminal R1.25-4, R2-4, RAV1.25-4, RAV2-4
R1.25-3, R2-3, RAV1.25-3,
RAV2-3
R1.25-4, R2-4, RAV1.25-4,
RAV2-4 Applicable
tightening torque: 78 to 118 N x cm 39 to 59 N x cm 78 to 118 N x cm External
dimensions
250 (H) × 55 (W)× 121 (D) (9.8× 2.1× 4.7) mm (inch)
250 (H) × 37.5 (W)
× 121 (D) (9.8× 1.5× 4.7)
mm (inch)
250 (H) × 55 (W)
× 121 (D) (9.8× 2.1× 4.7)
mm (inch) Weight 0.98 kg 0.75 kg 0.94 kg 0.8 kg 0.94 kg 0.75 kg 0.8 kg Allowable
momentary power interruption time *3
Less than 20ms
Less than 1ms
Less than 20ms
⎯⎯ Less than 20ms (at 100 VDC)
REMARK
The A66P module has the number of occupied slots shown below.1 slot
(2) Power supply module for CE marking
Table 4.2 Power Supply Module Specifications
Specifications Item
A61PEU A62PEU Base unit loading
position Power supply module loading slot
+10%
100 to 120 / 200 to 240 VAC -15%
Input voltage
(85 to 264 VAC)
Input frequency 50/60 Hz ±5 %
Input voltage distortion
factor. Within 5% (See Section 4.4)
Max. input apparent
power 130 VA 155 VA
Inrush current 20 A, within 8 ms
5 VDC 8 A 5 A
Rated output
current 24 VDC ⎯ 0.8 A
5 VDC 8.8 A or higher 5.5 A or higher
Overcurrent
protection *1 24 VDC ⎯ 1.2 A or higher
5 VDC 5.5 to 6.5 V ⎯
Overvoltage
protection *2 24 VDC ⎯
Efficiency 65 % or higher
Withstanding voltage 2830 VAC
Noise durability Noise voltage IEC801-4; 2kV, 1500 Vp-p
Noise width 1 s, Noise frequency 25 to 60 Hz (noise simulator condition) Insulation resistance 10 M or higher, measured with a 500 VDC insulation resistance tester
Power indicator Power LED display
Terminal screw size M4 × 0.7 × 6
Applicable wire size 0.75 to 2 mm2
Applicable
solderless terminal RAV1.25-4, RAV2-4
Applicable tightening
torque 78 to 118 N x cm
External dimensions 250 (H) × 55 (W)× 121 (D) (9.8× 2.1× 4.7) mm (inch)
Weight 0.8 kg 0.9 kg
Allowable momentary
power interruption time *3 Less than 20ms
POINTS
*1: Overcurrent protection
The overcurrent protection device shuts off the 5VDC and/or 24VDC circuit(s) and stops the system if the current exceeding the specified value flows in the circuit(s).
As this results in voltage drop, the power supply module LED turns OFF or is dimly lit.
After that, eliminate the causes of overcurrent, e.g., insufficient current capacity and short circuit, and then start the system.
When the current has reached the normal value, the initial start up of the system will be performed.
*2: Overvoltage protection
The overvoltage protection shuts off the 5VDC circuit and stops the system if the overvoltage of 5.5 to 6.5V is applied to the circuit.
This results in the power supply module LED turning OFF.
When restarting the system, power OFF and ON the input power supply, and the initial start up of the system will be performed.
If the system is not booted and the LED remains off, this means that the power supply module has to be replaced.
*3: Allowable momentary power failure period
The PLC CPU allowable momentary power failure period varies with the power supply module used.
In case of the A1S63P power supply module, the allowable momentary power failure period is defined as the time from when the primary side of the stabilized power supply for supplying 24VDC to the A1S63P is turned OFF until when the voltage (secondary side) has dropped from 24VDC to the specified value (15.6VDC) or less.
*4: Inrush current
If the power supply module is re-powered ON right after powered OFF (within 5seconds), the inrush current exceeding the specified value (2ms or less) may be generated. Therefore, make sure to re-power ON the module 5seconds after power off.
When selecting a fuse or breaker for external circuit, consider the
above point as well as meltdown and detection characteristics.
4.3.2 Part names and settings of Power Supply Module
The names and descriptions of each of the parts of the power supply modules are given below.
(1) Names and description of parts of the A61P, A61PN and A61PEU module
PN
Module fixing hook
Hook for fixing the module to the base unit.
"POWER" LED
LED for indicating 5 VDC power.
Power fuse, fuse holder
4 A cartridge fuse for AC input power is secured by the fuse holder.
Spare fuse for power supply
Spare fuse for power supply, mounted on rear side of the terminal cover.
Terminal block
For details, see below. (Located under the terminal cover) Terminal cover
Cover for protection of terminal block. Remove during wiring.
Re-install after wiring.
Module mounting screw mounting hole
Allows the module to be secured with a screw in addition to the module fixing hook. (For M4 screw)
Terminal details
Power input terminals
Power input terminals to which AC power of 100 VAC or 200 VAC.
Applied voltage select terminals
Terminals for selecting applied voltage. Use 100 VAC or 200 VAC as described below. When 100 VAC is input, connect together the "SHORT AC100V" terminals with the jumper provided. When 200 VAC is input, connect together the
"SHORT AC200V" terminals with the jumper provided.
LG terminal
Grounding of power filter. Has half the input potential.
FG terminal
Connection terminal connected to the shielding pattern on printed circuit board.
Terminal screw M4 × 0.7 × 6
(2) Names and description of parts of the A62P, A62PEU and A65P modules
Module fixing hook
Hook for fixing the module to the base unit.
"POWER" LED
LED for indicating 5 VDC power.
Power fuse, fuse holder
4 A cartridge fuse for AC input power is secured by the fuse holder.
Spare fuse for power supply
Spare fuse for power supply, mounted on rear side of the terminal cover.
Terminal block
For details, see below. (Located under the terminal cover) Terminal cover
Cover for protection of terminal block. Remove during wiring.
Re-install after wiring.
Module mounting screw mounting hole
Allows the module to be secured with a screw in addition to the module fixing hook. (For M4 screw)
Terminal details
Power input terminals
Power input terminals to which AC power of 100 VAC or 200 VAC.
Applied voltage select terminals
Terminals for selecting applied voltage. Use 100 VAC or 200 VAC as described below. When 100 VAC is input, connect together the "SHORT AC100V" terminals with the jumper provided. When 200 VAC is input, connect together the
"SHORT AC200V" terminals with the jumper provided.
LG terminal
Grounding of power filter. Has half the input potential.
FG terminal
Connection terminal connected to the shielding pattern on printed circuit board.
24 VDC, 24 GDC terminals
For supply to output module which requires 24 V inside the module. (Supplied to the module via external wiring) Terminal screw
M4 × 0.7 × 6
(3) Names and description of parts of the A63P and A67P modules
Module fixing hook
Hook for fixing the module to the base unit.
"POWER" LED
LED for indicating 5 VDC power.
Power fuse, fuse holder
Cartridge fuse for DC input power is fixed by the fuse holder.
The rating for the fuses are as follows.
A63P: 6.3 A (SM6.3 A or FGTA 250V 6A) A67P: 4 A (GTH4 or FGTA 250V 4A) Spare fuse for power supply
Spare fuse for power supply, mounted on rear side of the terminal cover.
Terminal block
For details, see below. (Located under the terminal cover) Terminal cover
Cover for protection of terminal block. Remove during wiring.
Re-install after wiring.
Module mounting screw mounting hole
Allows the module to be secured with a screw in addition to the module fixing hook. (For M4 screw)
Terminal details
Power input terminals
Power input terminals for A63P: 24 VDC, A67P: 100 VDC.
The power fuse will be blown if the 24 VDC connection is made with the wrong polarity.
LG terminal
Grounding of power filter.
FG terminal
Connection terminal connected to the shielding pattern on printed circuit board.
Terminal screw M4 × 0.7 × 6
(4) Names and description of parts of the A66P module
Module fixing hook
Hook for fixing the module to the base unit.
"POWER" LED
LED for indicating 5 VDC power.
Power fuse, fuse holder
4 A cartridge fuse for AC input power is secured by the fuse holder.
Terminal block mouniting screw
Screw for installing and fixing the terminal block to the module.
Terminal block
For details, see below. (Located under the terminal cover) Module mouniting screw mounting hole
Allows the module to be secured with a screw in addition to the module fixing hook. (For M4 screw)
Terminal details
Power input terminals
Power input terminals to which AC power of 100 VAC or 200 VAC.
Applied voltage select terminals
Terminals for selecting applied voltage. Use 100 VAC or 200 VAC as described below. When 100 VAC is input, connect together the "SHORT AC100V" terminals with the jumper provided. When 200 VAC is input, connect together the
"SHORT AC200V" terminals with the jumper provided.
LG terminal
Grounding of power filter. Has half the input potential.
FG terminal
Connection terminal connected to the shielding pattern on printed circuit board.
24 VDC, 24 GDC terminals
For supply to output module which requires 24 V inside the module. (Supplied to the module via external wiring) Power ON terminal
Contact terminal which conducts if the 24 VDC output is normal when power input turns on.
Terminal screw M3 × 0.5 × 6
(5) Setting
For A61P, A61PN, A61PEU, A62P, A62PEU, A65P or A66P, the input voltage range, 100V or 200V, must be specified by placing a jumper (supplied) across two terminals as described below:
(1)
(2) (3) (4) Remove the terminal cover from
the power supply module.
Remove the pair of terminal screw, (2) or (3), according to the supply voltage range (1) used.
(2): For the 100 VAC range.
(3): For the 200 VAC range.
Fit the jumper (4) and secure it with the terminal screw.
Fit the jumper in the direction shown in the figure at right.
(The figure at right shows an example when the supply line voltage is 100 VAC.)
POINT
If the setting differs from the supply line voltage, the following occurs: do not mis-set.
Supply Line Voltage
100VAC 200VAC Setting to 100VAC
(jumper fitted as indicated at (2)) ⎯
The power supply module is damaged. (The CPU module is not damaged.)
Setting to 200VAC
(jumper fitted as indicated at (3))
No error occurs in the module. However, the CPU module does not operate.
⎯
No setting (jumper not fitted) No error occurs in the module.
However, the CPU module does not operate.
4.3.3 Wiring instructions
Instructions for wiring the power supply cable and I/O cable.
DANGER z Be sure to shut off all phases of the external power supply used by the system before wiring.
Failure to do so may result in an electric shock or damage of the product.
z Before energizing and operating the system after wiring, be sure to attach the terminal cover supplied with the product.
Failure to do so may cause an electric shock.
CAUTION z Always ground the FG and LG terminals to the protective ground conductor.
Failure to do so may cause an electric shock or malfunctions.
z Wire the module correctly after confirming the rated voltage and terminal layout.
Connecting a power supply of a different voltage rating or incorrect wiring may cause a fire or failure.
z Do not connect multiple power supply modules to one module in parallel. The power supply modules may be heated, resulting in a fire or failure.
z Press, crimp or properly solder the connector for external connection with the specified tool.
Incomplete connection may cause a short circuit, fire or malfunctions.
z Tighten terminal screws within the specified torque range. If the screw is too loose, it may cause a short circuit, fire or malfunctions.
If too tight, it may damage the screw and/or the module, resulting in a short circuit or malfunctions.
z Carefully prevent foreign matter such as dust or wire chips from entering the module.
Failure to do so may cause a fire, failure or malfunctions.
z Install our PLC in a control panel for use.
Wire the main power supply to the power supply module installed in a control panel through a distribution terminal block.
Furthermore, the wiring and replacement of a power supply module have to be performed by a maintenance worker who acquainted with shock protection.
(For the wiring methods, refer to Type A1N/A2N(S1)/A3NCPU User’s Manual.)
(1) Power Supply Connection
(a) When voltage fluctuations are larger than the specified value, connect a constant-voltage transformer.
Constant voltage transformer
PLC
(b) Use a power supply which generates minimal noise between wires and between the PLC and ground. If excessive noise is generated, connect an insulating transformer.
PLC Insulating
transformer
I/O equipment Insulating
transformer
(c) When a power transformer or insulating transformer is employed to reduce the voltage from 200 VAC to 100 VAC, use one with a capacity greater than those indicated in the following table.
Power Supply Module Transformer Capacity
A61P, A61P 160VA n
A62P 155VA n
A65P 110VA n
A66P 95VA n
n: Stands for the number of power supply modules.
(d) Provide separate wiring systems for the PLC power, I/O devices, and operating devices as shown below.
If the wiring is influenced by excessive noise, connect an isolation transformer.
(e) Taking rated current or inrush current into consideration when wiring the power supply, be sure to connect a breaker or an external fuse that have proper blown and detection.
When using a single PLC, a 10A breaker or an external fuse are recommended for wiring protection.
200VAC
T1 Main
power supply Relay terminal block
PLCpower supply
Insulation Transformer
I/O power supply
I/O equipment
On a control panel
Main circuit power supply
Main circuit equipment PLC
(f) Note on using the 24 VDC output of the A62P, A65P and A66P power supply module.
CAUTION z Do not connect multiple power supply modules to one
module in parallel. The power supply modules may be
heated, resulting in a fire or failure.
If the 24 VDC output capacity is insufficient for one power supply module, supply 24 VDC from the external 24 VDC power supply as shown below:
I/O module
24VDC
24VDC 24VDC
External power supply
Power supply modulePower supply module Power supply module I/O module
(g) 100VAC, 200VAC, and 24VDC wires should be twisted as tightly as possible, and connect the modules at the shortest distance between them.
To minimize voltage drop, use thick wires (MAX. 2mm
2) where possible.
(h) Do not bind 100VAC and 24VDC wires together with main circuit (high tension and large current) wires or I/O signal lines (including common line) nor place them near each other. Provide 100mm (3.94 inch) clearance between the wires if possible.
(i) As a measure against surges caused by lightning, insert a lightning surge absorber as shown below.
E1 E1 AC
E1
E2
Surge absorber for lightning PLC
I/O devices
POINT
(1) Provide separate grounding for the lightning surge absorber (E1) and the PLC (E2).
(2) Select a lightning surge absorber whose maximum allowable circuit voltage is higher than the circuit voltage at the maximum power supply voltage.
(2) Wiring to I/O device
(a) The solderless terminal with insulation sleeve is inapplicable to a terminal block.
It is advisable to cover the wire connection part of a terminal with a
mark tube or insulation tube.
(b) Install wiring to a terminal block using the cable of core diameter 0.3 to 0.75mm
2, and outside diameter 2.8mm or less.
(c) Run the I/O line and output line away from each other.
(d) When the main circuit line and power line cannot be separated, use a shielding cable and ground it on the PLC side.
However, ground it on the opposite side in some cases.
PLC Input Output
DC
Shielded cable
Shield jacket RA
(e) When cables are run through pipes, securely ground the pipes.
(f) Run the 24VDC input line away from the 100VAC and 200 VAC lines.
(g) The cabling of 200m (656.2ft.) or longer distance may produce
leakage current depending on the capacity between lines and result in an accident.
(h) As a countermeasure against the power surge due to lightning,
separate the AC wiring and DC wiring and connect a surge absorber for lightning as shown in (i) of item (1).
Failure to do so increases the risk of I/O device failure due to lightning.
(3) Grounding
CAUTION z Be sure to ground the FG terminals and LG terminals to the protective ground conductor. Not doing so could result in electric shock or erroneous operation.
(a) Carry out the independent grounding if possible. (Grounding resistance 100 or less.)
(b) If the independent grounding is impossible, carry out the shared grounding (2) as shown below.
PLC Other
device Class 3 grounding
(1) Independent grounding...Best (2) Shared grounding...Good (3) Common grounding...Not allowed
PLC Other
device
PLC Other
device Class 3 grounding
(c) Use the cable of 2mm
2or more for grounding.
Set the grounding point closer to the PLC to make the grounding cable short as possible.
(d) If a malfunction occurs due to earthling, separate either LG or FG of
4.3.4 Wiring to module terminals
The following is an example of wiring of power supply and grounding wires to main base unit and extension base units.
AC
Main base unit (A38B)
A62P CPU
Extension base unit (A58B) I/O I/O
24 VDC OUTPUT 24 GDC FG LG
SHORT 200 VAC SHORT 100 VAC 100/200 VAC
SHORT 100 VAC 100/200 VAC
SHORT 200 VAC LG FG
Extension base (A68B)
A61P I/O
FG 100/110 VAC
Fuse ACDC
24 VDC
24 VDC
Connect to the 24 VDC terminals of an I/O module that requires 24 VDC internally.
5 VDC line
100/110 VAC
Ground Grounding line
5 VDC line
POINT (1) Use the thickest possible (max. 2 mm
2(14 AWG)) wires for the 100/200
VAC and 24 VDC power cables. Be sure to twist these wires starting at the connection terminals. For wiring a terminal block, be sure to use a solderless terminal. To prevent short-circuit due to loosening screws, use the solderless terminals with insulation sleeves of 0.8 mm (0.03 inch) or less thick. The number of the solderless terminals to be connected for one terminal block are limited to 2.
Terminal block Solderless terminals
with insulation sleeves
(2) When the LG and FG terminals are connected, they must be grounded.
If they are not grounded, the operations will be easily influenced by
noise. Be aware not to touch the LG terminal since it has potential of half the input voltage.
4.4 Precaution when Connecting the Uninterruptive Power Supply (UPS) Be sure of the following terms when connecting the PLC system to the
uninterruptive power supply (abbreviated as UPS hereafter):
As for UPS, use the online power system or online interactive system with a voltage distortion rate of 5% or less.
For the UPS of the commercial online power system, use Mitsubishi Electric's F Series UPS (serial number P or later) (Ex.: FW-F10-0.3K/0.5K).
Do not use any UPS of the commercial online power system other than the F
series mentioned above.
4.5 Part names and settings
This section gives the names of each part of the CPU module.
4.5.1 Part names of AnNCPU, AnACPU, and AnUCPU
(5) (1)
(2)
(3)
(4)
(5) (6) (7) (8) (9) (10)
(11)
(A)
(B)
(C) (D) (E) (F)
(5) (8)
(6) (7)
(9)
(12)
(11)
(13) (8)
(14) (7)
(9)
(12)
(11)
A1NCPU Detail of A1NCPU terminals
A2NCPU(S1) A2ACPU(S1) A2UCPU(S1)
A3NCPU A3ACPU A3U, A4UCPU
(1) "POWER" LED
The "POWER" LED lights when the AC power is switched on and the 5/24 VDC output is normal.
(2) Fuse holder
Holder for the fuse that protects the AC side (3) Spare fuse box
A spare fuse for the power supply is stored on the rear face of the cover (4) Power terminal block
(A) Power input terminal
The power input terminal used to connect the 100VAC or 200VAC power supply.
(B) Operating voltage switching terminal
It is possible to use either a 100VAC or 200VAC power supply.
When 100VAC is used, short-circuit the "SHORT 100VAC"
terminals with the shorting strip supplied. When 200VAC is used, short-circuit the "SHORT 200VAC" terminals.
(C) LG terminal
Used to ground power filter.
Has potential half the input voltage.
(D) FG terminal
The grounding terminal connected to the shielding pattern on the printed wiring board.
(E) 24VDC, 24GDC terminals
Used to supply 24V to output modules that require an internal 24V source (supplied to modules through external wiring).
(F) Terminal screws
M4 x 0.7 x 6
POINT
Discrepancies between the voltage setting and the actual power supply voltage will have the following consequences:
Power Supply Voltage
100VAC 200VAC Set to 100VAC (shorting
strip connected at (2)) ⎯
The power supply module is destroyed (no abnormality in the CPU)
Set to 200VAC (shorting strip connected at (3))
There is no abnormality in the module. However, the CPU does not operate.
⎯
No setting (shorting strip not used)
There is no abnormality in the module. However, the CPU does not operate.
(5) "RUN" LED
The "RUN" LED indicates the operating condition of the CPU.
ON : When the key switch is turned to RUN or STEP RUN and the sequence program is being executed.
OFF : When the key switch is turned to STOP, PAUSE or STEP RUN and the sequence program is not being executed.
Flashing : When an error has been detected by the self-diagnosis function (operation will continue if the error detected has been specified in the parameter settings). When the key switch is set to the LATCH CLEAR position, the LED flashes rapidly for about two seconds.
(6) "ERROR" LED
ON : Indicates that a WDT or internal fault check error has occurred due to a hardware fault.
OFF : Indicates that the annunciator (F) has been switched ON by the sequence program.
(7) RUN/STOP key switch
RUN/STOP : Used to start/stop sequence program execution.
PAUSE : Sequence program operation stops with the output statuses immediately before the PAUSE condition was established
retained.
STEP RUN : The sequence program is run step by step or scan by scan.
(8) RESET key switch
RESET : Hardware reset. Used to reset the CPU after an operation error and to initialize operation.
LATCH : Sets all data in the latch area defined in the parameter CLEAR settings to "OFF" or "0" (valid only when the RUN/STOP key
switch is turned to STOP).
(1) Turn the RUN/STOP switch from STOP to L.CLR several times.
(2) Clear by means of a program.
(9) I/O control switch (AnNCPU only)
This switch is used to set the Direct/Refresh mode.
Switch Setting Input (X) Output (Y) D9014
OFF ON
(Factory setting)
Direct mode Direct mode 0
OFF ON
Refresh mode Direct mode 1
OFF ON
Refresh mode Refresh mode 3
POINTS (1) Perform switch setting while the power is switched OFF.
(2) After the switches have been set, the CPU checks the status of the switches at power on or at reset. Note that if the direct mode is set for input and the refresh mode for output, the CPU will execute processing in the refresh mode for both input and output.
(3) Since a binary code corresponding to the I/O control mode is stored in special register D9014, the mode can be monitored using a peripheral device.
Latch Clearing Method
(10) Memory card area
This is the section where the memory card is installed and the memory protect setting is made. It is provided with a cover.
(11) RS-422 connector
The connector for peripheral device connection.
Fitted with a cover when not in use.
(12) Memory cassette loading connector
Used to connect the memory cassette to the CPU.
(13) LED Display
Capable of displaying up to 16 alphanumeric characters. Displays self diagnosis error comments, and the F number comments of annunciators in accordance with OUT F and SET F
(14) LED display reset switch
Used to clear the LED display and display the next display data if there is
any.
4.5.2 Part identification of AnNCPUP21/R21, AnACPUP21/R21
This section gives the names of those parts of the AnNCPUP21/R21 and AnACPUP21/R21 that relate to the data link function. For the names of other parts, such as the RUN/STOP key switch, refer to Section 4.5.1.
(18) (19)
(18) (19)
(16)
(16) (15)
(17)
(15) (17)
A1NCPUP21(-S3) A1NCPUR21
A2NCPU(S1)P21(-S4) A3NCPUP21(-S3) A2ACPU(S1)P21(-S4) A3ACPUP21(-S3)
A2NCPU(S1)R21 A3NCPUR21 A2ACPU(S1)R21 A3ACPUR21
(15) LEDs for indicating operation status and errors
LED Name Description LED
Name Description
RUN Comes ON when the data link
is normal. S0
SD Remains ON while data is
sent. S1
RD Remains ON while data is
received. S2
Not used (always OFF) S3 CRC Comes ON when a code
check error occurs. S4 OVER Comes ON when a data entry S5
delay error occurs. S6 AB. IF Comes ON when data is all
"1". S7
Not used
(These LEDs flash during execution of data link. This is not an abnormal condition)
TIME Comes ON when a time-out occurs.
DATA Comes ON when a receive data error occurs.
F.LOOP
Comes ON when the forward loop serves as the data receiving line, or goes OFF when the reverse loop is used for it.
UNDER Comes ON when a send data
error occurs. CPU R/W Comes ON during communications with the PC CPU.
F. LOOP Comes ON when a forward
loop receive data error occurs. Not used (always OFF) Not used (always OFF) R..
LOOP
Comes ON when a reverse
loop receive data error occurs. 10
1 20 2 40
Indicate the figures at the ten's digit of the station numbers in BCD codes.
4 Not used (always OFF)
8
Indicate the figures at the one's digit of the station numbers in BCD.
(16) Station number setting switches
z Station numbers from 00 to 64 can be set.
z The "X10" switch is to set the ten's digit of a station number.
z The "X1" switch is to set the one's digit of a station number.
z To use a station as the master station, set "00".
z To use a station as a local station, set between "01" and "64".
(17) Mode select switch
By switching mode, the following functions are available:
Setting
Number Name Description
0 Online Automatic return is set during normal operation.
1 Online Automatic return is not set during normal operation.
2 Online The host station is disconnected.
3 Forward loop test mode
Used to perform a line check on the optical fiber cables or coaxial cables in the forward loop (for normal data link) throughout the entire data link system.
4 Reverse loop test mode
Used to perform a line check on the optical fiber cables or coaxial cables in the reverse loop (for loopback when an error occurs) throughout the entire data link system.
5
Station-to-sta tion test mode (master station) 6
Station-to-sta tion test mode (slave station)
Used to check the line between two stations.
The line is checked with the station with the smaller station number set as the master station and the other station set as a slave station.
7 Self-loopback test mode
Used to check the hardware, including the send/receive circuits of the communications system, of one data link module in isolation.
8 to F ⎯ Unusable
(18) Connectors for connecting opeical fiber cables Connect the cables as illustrated below:
OUT Forward loop send Reverse loop receive
IN Reverse loop send Forward loop receive
OUT IN ← Front OUT IN ← Front OUT IN ← Front
Master station Equipment No. 1 Equipment No. 2
Front IN OUT
IN : To be connected to the OUT connector of the previous station.
OUT : To be connected to the IN connector of the next station.
(19) Connectors for connecting coaxial cables Connect the cables as illustrated below:
Front
OUT R-RD IN
F-RD OUT F-SD
IN
R-SD OUT
R-RD IN F-RD OUT F-SD
IN
R-SD OUT
R-RD IN F-RD OUT F-SD
IN R-SD OUT R-RD
Receive loop reverse
IN R-SD Reverse loop send OUT F-SD
Forward loop send
IN F-RD Forward loop receive
R-SD F-RD F-SD R-RD IN
OUT
Master station Equipment No. 1 Equipment No. 2
IN R-SD : To be connected to the OUT R-RD connector of the previous station.
IN F-RD : To be connected to the OUT F-SD connector of the previous station.
OUT F-SD : To be connected to the IN F-RD connector of the next station.
OUT R-RD : To be connected to the IN R-SD connector of the next station.
Front Front Front
5. I/O MODULE SPECIFICATIONS AND CONNECTIONS
This section presents the specifications and wiring drawings for each of the A series I/O modules.
5.1 Input Modules
5.1.1 Input module specifications
Operating Voltage Model Input Type
Numbe r of Points/
Module
Rated Input Voltage
Input
Current ON Voltage
OFF Voltage
Maximum Simultaneous ON
Input Point (Percentage Simultaneous ON)
AX10 16
points 100%
AX11
10mA 80VAC or higher
AX11EU
32 points
100V to 120VAC
12mA 79VAC or higher
40VAC
AX21EU
AC input
32 points
200V to 240VAC
12mA
160VAC or higher
70VAC
or lower 60%
AX40 16
points 100%
AX41 AX41-S1
32 points
4/10mA
60%
AX42 *1
DC input (sink type)
AX42-S1
*1 DC input
64 points
12/24 VDC
3/7mA
9.5VDC or higher
6VDC or lower
60% *3
AX50 DC input (sink type) AX50-S1 DC input (sink/source
48VDC 4mA 34VDC
or higher
10VDC or lower
AX60 DC input (sink type) AX60-S1 DC input
(sink/source type)
100/110/
125VDC 2mA 80VDC or higher
20VDC or higher
1.1VDC
AX70 Sensor input
(sink/source type)
16 points
24VDC 4.5mA (TYP)
5VDC
or higher 2VDC or lower
100%
Input Response Time
OFF to ON ON to OFF
External Connections
Common Terminal Arrangement
Internal Current Consumption
Number of Occupied I/O Points 20 terminal block
connector 16 points/
common 0.055A 16 points
0.11A 38 terminal block
connector
32 points/
common
0.15A
32 points
20 terminal block
connector 16 points/
common 0.055A 16 points
0.11A 15ms or less 25ms or less
38 terminal block
connector 32 points/
common
0.15A
32 points
20 terminal block
connector 0.055A 16 points
10ms or less 10ms or less 8 points/
common
0.1ms or less 0.2ms or less
38 terminal block
connector 32 points/
common
0.11A 32 points
10ms or less 10ms or less 64 point
0.5ms or less 0.5ms or less
40-pin connector
× 2 32 points/
common 0.12A
32 points
10ms or less 10ms or less
10ms or less 20ms or less
1.5ms or less 3ms or less
20 terminal block
connector 8 points/
common 0.055A 16 points
(To next page)
(From front page)
Operating Voltage Model Input Type
Number of Points/
Module
Rated Input Voltage
Input
Current ON Voltage
OFF Voltage
Maximum Simultaneous ON
Input Point (Percentage Simultaneous ON) 5VDC
or higher 1.1VDC or lower 12VDC
(SW OFF)
2mA (TYP) 3mA (MAX) AX71 Sensor input
(sink/source type) 32 points
24VDC
or higher 2VDC or lower
AX80
or higher 6VDC or lower
AX81-S1 DC input
12/24 VDC
2.5/5mA 5.6VDC
or higher 2.4VDC or lower AX81-S2 DC input (source type) 48/60
VDC 3/4mA 31VDC
or higher 10VDC or lower AX81-S3 DC input
32 points
12/24
VDC 4/10mA 9.5VDC
or higher 6VDC or lower At normal input 21VDC
or higher 6VDC or lower When disconnection detected
AX81B DC input
(sink/source type) 32
points 24VDC 7mA
1VDC
or higher 6VDC or lower AX82 *1 DC Input
(source type) 64
points 12/24
VDC 3/7mA 9.5VDC
or higher 6VDC or lower
60% higher
2.5VAC /VDC or
lower 100%
Input Response Time
OFF to ON ON to OFF
External Connections
External Connections