Mitsubishi Electric MELSEC-I/OLINK User manual

Transition from MELSEC-I/OLINK to

AnyWire DB A20 Handbook

Feb. 2017 Edition

A- 1

SAFETY PRECAUTIONS

(Read these precautions before using this product.)

Before using products introduced in this handbook, please read relevant manuals and replacement

handbooks carefully and pay full attention to safety to handle the product correctly.

The precautions given in this handbook are concerned with products introduced in this handbook only. For

the safety precautions of the programmable controller system, refer to the user's manual for the CPU

module used.

In this handbook, 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 handbook and then keep the handbook 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.

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When the QJ51AW12D2 is used

[Design 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.

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[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.

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[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.

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[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.

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When the LJ51AW12D2 is used