Mitsubishi Electric MELCEC Q Series Manuel utilisateur

QCPU-A (A Mode)

User's Manual

-Q02CPU-A

-Q02HCPU-A

-Q06HCPU-A

A - 1

SAFETY PRECAUTIONS

(Read these precautions before using this product.)

Before using the product, please read this manual and the relevant manuals carefully and pay full attention

to safety to handle the product correctly.

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.

[DESIGN PRECAUTIONS]

WARNING

Configure safety circuits external to the programmable controller to ensure that the entire system

operates safely even when a fault occurs in the external power supply or the programmable

controller. Failure to do so may result in an accident due to an incorrect output or malfunction.

(1) Configure external safety circuits, such as an emergency stop circuit, protection circuit, and

protective interlock circuit for forward/reverse operation or upper/lower limit positioning.

(2) When the programmable controller detects the following error conditions, it stops the operation

and turn off all the outputs.

• Overcurrent or overvoltage protection of the power supply module is activated.

• The CPU module detects an error such as a watchdog timer error by the self-diagnostic

function.

All outputs may turn on when an error occurs in the part, such as I/O control part, where the

CPU module cannot detect any error. To ensure safety operation in such a case, provide a

safety mechanism or a fail-safe circuit external to the programmable controller. For a fail-safe

circuit example, refer to Chapter 9 LOADING AND INSTALLATION in this manual.

(3) Outputs may remain on or off due to a failure of an output module relay or transistor. Configure

an external circuit for monitoring output signals that could cause a serious accident.

In an output module, when a load current exceeding the rated current or an overcurrent caused by a

load short-circuit flows for a long time, it may cause smoke and fire. To prevent this, configure an

external safety circuit, such as a fuse.

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.

A - 2

[DESIGN PRECAUTIONS]

WARNING

Configure a circuit so that the programmable controller is turned on first and then the external power

supply. If the external power supply is turned on first, an accident may occur due to an incorrect

output or malfunction.

For the operating status of each station after a communication failure, refer to relevant manuals for

the network.

Incorrect output or malfunction due to a communication failure may result in an accident.

When controlling a running programmable controller from a peripheral connected to the CPU module

or from a personal computer connected to a special function module, configure an interlock circuit in

the sequence program to ensure that the entire system will always operate safely.

For program modification and operating status change, read relevant manuals carefully and ensure

the safety before operation.

Especially, in the case of a control from an external device to a remote programmable controller,

immediate action cannot be taken for a problem on 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.

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 (A1SG60) or a dummy module (A1SG62) for it.

Otherwise, internal parts of the module may be flied in the short circuit test or when an overcurrent or

overvoltage is accidentally applied to the external I/O section.

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.

When a device such as a lamp, heater, or solenoid valve is controlled through an output module, a

large current (approximately ten times greater than normal) may flow when the output is turned from

off to on.

Take measures such as replacing the module with one having a sufficient current rating.

After the CPU module is powered on or is reset, the time taken to enter the RUN status varies

depending on the system configuration, parameter settings, and/or program size.

Design circuits so that the entire system will always operate safely, regardless of the time.

A - 3

[INSTALLATION PRECAUTIONS]

CAUTION

Use the programmable controller under the environment that meets the general specifications in this

manual.

Failure to do so may result in electric shock, fire, malfunction, or damage to or deterioration of the

product.

To mount the CPU 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 mounting may cause malfunction, failure or a drop of the module.

When using the programmable controller in an environment of frequent vibrations, fix the module

with the 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.

Insert securely the module fixing projection at the bottom of the AnS series module into the fixing

hole in the base unit and then tighten the module fixing screw within the specified torque.

When no screw is tightened, even if the module is installed correctly, it may cause malfunctions, a

failure or a drop of the module.

Tightening the screw excessively may damage the screw and/or the module, resulting in a drop of

the module, a short circuit or malfunctions.

When using an extension cable, connect it to the extension cable connector of the base unit

securely.

Check the connection for looseness.

Poor contact may cause incorrect input or output.

When using a memory card, fully insert it into the memory card slot.

Check for incomplete connection after installing it.

Poor electrical contact may cause malfunctions.

Shut off the external power supply for the system in all phases before mounting or removing the

module.

Failure to do so may result in damage to the product.

Do not directly touch any conductive part of the module.

Doing so can cause malfunction or a failure of the module.

A - 4

[WIRING PRECAUTIONS]

WARNING

Shut off the external power supply for the system in all phases before wiring.

Failure to do so may result in electric shock or damage to the product.

After wiring, attach the included terminal cover to the module before turning it on for operation.

Failure to do so may result in electric shock.

A - 5

[WIRING PRECAUTIONS]

CAUTION

Ground the FG and LG terminals to the protective ground conductor dedicated to the programmable

controller.

Failure to do so may result in electric shock or malfunction.

Use applicable solderless terminals and tighten them within the specified torque range. If any spade

solderless terminal is used, it may be disconnected when the terminal screw comes loose, resulting

in failure.

Check the rated voltage and terminal layout before wiring to the module, and connect the cables

correctly.

Connecting a power supply with a different voltage rating or incorrect wiring may cause a fire or

failure.

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.

Connectors for external connection must be crimped or pressed with the tool specified by the

manufacturer, or must be correctly soldered.

Incomplete connections could result in short circuit, fire or malfunction.

Tighten the terminal screw 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 CPU module to prevent foreign matter, such as wire

chips, from entering during wiring.

Do not remove the film during wiring.

Remove it for heat dissipation before system operation.

Mitsubishi Electric programmable controllers must be installed in control panels.

Connect the main power supply to the power supply module in the control panel through a relay

terminal block.

Wiring and replacement of a power supply module must be performed by maintenance personnel

who is familiar with protection against electric shock. (For the wiring methods, refer to Section 9.5.)

A - 6

[STARTUP AND MAINTENANCE PRECAUTIONS]

WARNING

Do not touch any terminal while power is on.

Doing so will cause electric shock.

Correctly connect the battery connector.

Do not charge, disassemble, heat, short-circuit, solder, or throw the battery into the fire.

Doing so will cause the battery to produce heat, explode, or ignite, resulting in injury and fire.

Shut off the external power supply for the system in all phases 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.

A - 7

[STARTUP AND MAINTENANCE PRECAUTIONS]

CAUTION

Before performing online operations (especially, program modification, forced output and operation

status change) for the running CPU module from the peripheral connected, read relevant manuals

carefully and ensure the safety.

Improper operation may damage machines or cause accidents.

Do not disassemble or modify the modules.

Doing so may cause failure, malfunction, injury, or a fire.

Use any radio communication device such as a cellular phone or PHS (Personal Handy-phone

System) more than 25cm away in all directions from the programmable controller.

Shut off the external power supply for the system in all phases before mounting or removing the

module. Failure to do so may cause the module to fail or malfunction.

After the first use of the product, do not perform each of the following operations more than 50 times

(IEC 61131-2/JIS B 3502 compliant).

Exceeding the limit may cause malfunction.

• Mounting/removing the module to/from the base unit

• Mounting/removing the terminal block to/from the module

Do not drop or apply any shock to the battery to be installed in the module.

Doing so may damage the battery, causing the battery fluid to leak inside the battery. If the battery is

dropped or any shock is applied to it, dispose of it without using.

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.

A - 8

[DISPOSAL PRECAUTIONS]

[TRANSPORTATION PRECAUTIONS]

CAUTION

When disposing of the product, treat it as an industrial waste.

When disposing of batteries, separate them from other wastes according to the local regulations.

(For details of the Battery Directive in EU member states, refer to Appendix 7.)

CAUTION

When transporting lithium batteries, follow the transportation regulations. (For details of the

regulated models, refer to Appendix 6.)

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