Mitsubishi Electric MELSEC Q Series User manual

MELSEC-Q/L AnyWire DB A20 Master Module
User's Manual
-QJ51AW12D2
-LJ51AW12D2

1
COPYRIGHT
This document is protected by the law of copyright, whereby all rights established therein remain with the company
Mitsubishi Electric Corporation. Reproduction of this document or parts of this document is only permissible within the
limits of the legal determination of Copyright Law. Alteration or abridgement of the document is not permitted without
the explicit written approval of the company Mitsubishi Electric Corporation.
PRECAUTIONS REGARDING WARRANTY AND
SPECIFICATIONS
The QJ51AW12D2 and LJ51AW12D2 were jointly developed and manufactured by Mitsubishi and Anywire
Corporation.
Note that there are some precautions regarding warranty and specifications of this product.
<Warranty>
<Specifications>
The general specifications of the QJ51AW12D2 are the same as those of other MELSEC-Q series except under the
following condition.
When setting the transmission clock at 125kHz by using the master module whose serial number (sixth digit) is 5 or
earlier, apply within the following specified range:
Voltage range of external power supply: 21.6 to 25.2VDC
Operating ambient temperature: 0 to 50
The general specifications of the LJ51AW12D2 are the same as those of other MELSEC-L series.
<Application of the EMC Directive>
*1 The master module with a serial number where the sixth digit is "3" or later complies with this standard.
Item QJ51AW12D2, LJ51AW12D2
Other programmable controller
products
(e.g. MELSEC-Q series)
Repair term after discontinuation of
production 1 years 7 years
Item QJ51AW12D2 LJ51AW12D2
Other programmable controller
products
(e.g. MELSEC-Q series)
Applicable EMC standard EN61131-2*1 EN61131-2 EN61131-2

2
<Application of the UL/cUL standards>
*2 The master module with a serial number where the sixth digit is "4" or later complies with this standard.
*3 The master module with a serial number where the sixth digit is "2" or later complies with this standard.
Item QJ51AW12D2 LJ51AW12D2
Other programmable controller
products
(e.g. MELSEC-Q series)
Applicable UL standard/cUL standard UL508*2
CSA22.2 *2
UL508*3
CSA22.2*3
UL508
CSA22.2

3
SAFETY PRECAUTIONS
(Read these precautions before using this product.)
Before using this product, please read this manual and the relevant manuals carefully and pay full attention
to safety to handle the product correctly.
The precautions given in this manual are concerned with this product only. For the safety precautions of the
programmable controller system, refer to the user's manual for the CPU module used.
In this manual, the safety precautions are classified into two levels: " WARNING" and " CAUTION".
Under some circumstances, failure to observe the precautions given under " CAUTION" may lead to
serious consequences.
Observe the precautions of both levels because they are important for personal and system safety.
Make sure that the end users read this manual and then keep the manual in a safe place for future
reference.
WARNING
CAUTION
Indicates that incorrect handling may cause hazardous conditions,
resulting in death or severe injury.
Indicates that incorrect handling may cause hazardous conditions,
resulting in minor or moderate injury or property damage.

4
When the QJ51AW12D2 is used
[Design Precautions]
[Design Precautions]
[Security Precautions]
WARNING
●An AnyWire DB A20 system has no control function for ensuring safety.
●When connecting a peripheral with the CPU module or a personal computer with an intelligent
function module to modify data of a running programmable controller, configure an interlock circuit in
the sequence program to ensure that the entire system will always operate safely. For other forms of
control (such as program modification or operating status change) of a running programmable
controller, read the relevant manuals carefully and ensure that the operation is safe before
proceeding. Especially, when a remote programmable controller is controlled by an external device,
immediate action cannot be taken if a problem occurs in the programmable controller due to a
communication failure. To prevent this, configure an interlock circuit in the sequence program, and
determine corrective actions to be taken between the external device and CPU module in case of a
communication failure.
●Do not write any data to the "system area" of the buffer memory in the intelligent function module.
Also, do not use any "use prohibited" signals as an output signal from the CPU module to each
module. Doing so may cause malfunction of the programmable controller system.
CAUTION
●Although an AnyWire DB A20 system features high noise immunity, keep a distance of 100mm or
more between the transmission cables or I/O cables and the high-voltage cables or power cables.
Failure to do so may cause malfunction.
●Configure safety circuits, such as an emergency stop circuit and interlock circuit, external to the
AnyWire DB A20 system.
WARNING
●To maintain the security (confidentiality, integrity, and availability) of the programmable controller and
the system against unauthorized access, denial-of-service (DoS) attacks, computer viruses, and other
cyberattacks from external devices via the network, take appropriate measures such as firewalls,
virtual private networks (VPNs), and antivirus solutions.

5
[Installation Precautions]
WARNING
●Use the programmable controller in an environment that meets the general specifications in the user's
manual for the CPU module used.
Failure to do so may result in electric shock, fire, malfunction, or damage to or deterioration of the
product.
●To mount the module, while pressing the module mounting lever located in the lower part of the
module, fully insert the module fixing projection(s) into the hole(s) in the base unit and press the
module until it snaps into place.
Incorrect interconnection may cause malfunction, failure, or drop of the module.
When using the programmable controller in an environment of frequent vibrations, fix the module with
a screw.
Tighten the screw within the specified torque range.
Undertightening can cause drop of the screw, short circuit, or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short circuit, or malfunction.
●Shut off the external power supply (all phases) used in the system before mounting or removing a
module.
Failure to do so may result in damage to the product.
●Do not directly touch any conductive parts and electronic components of the module.
Doing so can cause malfunction or failure of the module.

6
[Wiring Precautions]
CAUTION
●Tighten the terminal block screws within the specified torque range.
Undertightening can cause short circuit, fire, or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short circuit, or malfunction.
●Prevent foreign matter such as dust or wire chips from entering the module.
Such foreign matter can cause a fire, failure, or malfunction.
●A protective film is attached to the top of the module to prevent foreign matter, such as wire chips,
from entering the module during wiring.
Do not remove the film during wiring.
Remove it for heat dissipation before system operation.
●Incorrect wiring may damage modules and external devices.
Adjust a cable length and a module position to prevent disconnection of a connector type terminal
block or a cable.
●Do not solder stranded wires of a cable when connecting them to the terminal block. Doing so may
cause poor contact.
●The power supply voltage of remote slave modules may be insufficient due to a voltage drop in the
power supply line. Connect an external power supply so that the voltage of remote slave modules is
ensured.
●Do not apply the 24VDC power before wiring the entire AnyWire DB A20 system. If the power is
applied before wiring, normal data transmission is not guaranteed.
●Use 24VDC stabilized power supplies for devices in the AnyWire DB A20 system.
●Do not install the control lines or communication cables together with the main circuit lines or power
cables.
Failure to do so may result in malfunction due to noise.
●Place the cables in a duct or clamp them.
If not, dangling cable may swing or inadvertently be pulled, resulting in damage to the module or
cables or malfunction due to poor contact.
●When disconnecting the cable from the module, do not pull the cable by the cable part.
For the cable connected to the terminal block, loosen the terminal screw.
Pulling the cable connected to the module may result in malfunction or damage to the module or
cable.

7
[Startup and Maintenance Precautions]
[Startup and Maintenance Precautions]
[Disposal Precautions]
WARNING
●Do not touch any terminal while power is on. Doing so will cause electric shock or malfunction.
●Shut off the external power supply (all phases) used in the system before cleaning the module or
retightening the terminal screws or module fixing screws.
Failure to do so may result in electric shock.
Undertightening the terminal screws can cause short circuit or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short circuit, or malfunction.
CAUTION
●Do not disassemble or modify the modules. Doing so may cause failure, malfunction, injury, or a fire.
●Shut off the external power supply (all phases) used in the system before mounting or removing a
module.
Failure to do so may cause the module to fail or malfunction.
●After the first use of the product, do not mount/remove the module to/from the base unit, and the
terminal block to/from the module more than 50 times (IEC 61131-2 compliant) respectively.
Exceeding the limit of 50 times may cause malfunction.
●Before handling the module, touch a grounded metal object to discharge the static electricity from the
human body.
Failure to do so may cause the module to fail or malfunction.
CAUTION
●When disposing of this product, treat it as industrial waste.

8
When the LJ51AW12D2 is used
[Design Precautions]
[Design Precautions]
[Security Precautions]
WARNING
●An AnyWire DB A20 system has no control function for ensuring safety.
●When connecting a peripheral with the CPU module or a personal computer with an intelligent
function module to modify data of a running programmable controller, configure an interlock circuit in
the sequence program to ensure that the entire system will always operate safely. For other forms of
control (such as program modification or operating status change) of a running programmable
controller, read the relevant manuals carefully and ensure that the operation is safe before
proceeding. Especially, when a remote programmable controller is controlled by an external device,
immediate action cannot be taken if a problem occurs in the programmable controller due to a
communication failure. To prevent this, configure an interlock circuit in the sequence program, and
determine corrective actions to be taken between the external device and CPU module in case of a
communication failure.
●Do not write any data to the "system area" of the buffer memory in the intelligent function module.
Also, do not use any "use prohibited" signals as an output signal from the CPU module to each
module. Doing so may cause malfunction of the programmable controller system.
CAUTION
●Do not install the control lines or communication cables together with the main circuit lines or power
cables.
Keep a distance of 100mm or more between them. Failure to do so may result in malfunction due to
noise.
●Configure safety circuits, such as an emergency stop circuit and interlock circuit, external to the
AnyWire DB A20 system.
WARNING
●To maintain the security (confidentiality, integrity, and availability) of the programmable controller and
the system against unauthorized access, denial-of-service (DoS) attacks, computer viruses, and other
cyberattacks from external devices via the network, take appropriate measures such as firewalls,
virtual private networks (VPNs), and antivirus solutions.