Mitsubishi Q2ACPU User manual

A - 1

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.

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.

Make sure that the end users read this manual and then keep the manual in a safe place for future

reference.

[DESIGN PRECAUTIONS]

WARNING

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.

• The overcurrent protection device or overvoltage protection device of the power supply

module is activated.

• 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. For fail-safe circuit example,

refer to "LOADING AND INSTALLATION" of this manual.

(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.

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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[DESIGN PRECAUTIONS]

WARNING

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.

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.

For the operation status of each station at a communication error in data link, refer to the respective

data link manual.

Otherwise, incorrect output or malfunction may cause an accident.

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.

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 the external I/O section.

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[DESIGN PRECAUTIONS]

[INSTALLATION PRECAUTIONS]

CAUTION

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 (3.94inch) or more between them.

Failure to do so may cause malfunctions due to noise.

If having read register R outside the allowable range with the MOV instruction, the file register data

will be FFFFH. Using this as it is may cause malfunctions. Pay attention not to use any out-of-range

file register when designing sequence programs. For instruction details, refer to the programming

manual.

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.

Time from when the CPU module is powered on or is reset to when it enters in RUN status depends

on the system configuration, parameter settings, and program size.

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

CAUTION

Use the PLC under the environment specified in the user's manual.

Otherwise, it may cause electric shocks, fires, malfunctions, product deterioration or damage.

Insert the module fixing projection into the fixing hole in the base unit to mount the module.

Incorrect mounting may cause malfunctions, a failure or a drop of the module.

In an environment of frequent vibrations, secure the module with the screw.

Tighten the screw within the specified torque range.

If the screw is too loose, it may cause a drop of the module, a short circuit or malfunctions.

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

the module, a short circuit or malfunctions.

Connect the extension cable to the connector of the base unit or module.

Check for incomplete connection after installing it.

Poor electrical contact may cause incorrect inputs and/or outputs.

Insert the memory card and fully press it to the memory card connector.

Check for incomplete connection after installing it.

Poor electrical contact may cause malfunctions.

Be sure to shut off all phases of the external power supply used by the system before mounting or

removing the module.

Failure to do so may damage the module.

Do not directly touch the conductive part or electronic components of the module.

Doing so may cause malfunctions or a failure of the module.

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[WIRING PRECAUTIONS]

WARNING

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.

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

Ground the FG and LG terminals correctly.

Failure to do so may cause an electric shock or malfunctions.

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.

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.

Press, crimp or properly solder the connector for external connection with the specified tool.

Incomplete connection may cause a short circuit, fire or malfunctions.

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.

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.

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 Section 19.7.)

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[STARTUP AND MAINTENANCE PRECAUTIONS]

WARNING

Do not touch any terminal during power distribution.

Doing so may cause an electric shock.

Correctly connect the battery connector.

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

Incorrect battery handling may cause personal injuries or a fire due to exothermic heat, burst and/or

ignition.

Be sure to shut off all phases of the external power supply used by the system before cleaning or

retightening the terminal screws or module mounting screws.

Failure to do so may result in an electric shock.

If they are too loose, it may cause a short circuit or malfunctions.

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

the module, a short circuit or malfunctions.

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[STARTUP AND MAINTENANCE PRECAUTIONS]

[DISPOSAL PRECAUTIONS]

[TRANSPORTATION PRECAUTIONS]

CAUTION

When performing online operations (especially, program modification, forced output or operating

status change) by connecting a peripheral device to the running CPU module, read the manual

carefully and ensure the safety.

Incorrect operation will cause mechanical damage or accidents.

Do not disassemble or modify each of modules.

Doing so may cause failure, malfunctions, personal injuries and/or a fire.

When using a wireless communication device such as a mobile phone, keep a distance of 25cm

(9.84inch) or more from the PLC in all directions.

Failure to do so may cause malfunctions.

Be sure to shut off all phases of the external power supply used by the system before mounting or

removing the module.

Failure to do so may result in failure or malfunctions of the module.

When replacing the fuse, use a fuse specified by the manufacturer.

Using the one for the high-rated current or an electric wire may cause a fire.

Do not drop or apply any impact to the battery.

Doing so may damage the battery, resulting in electrolyte spillage inside the battery.

If any impact has been applied, discard the battery and never use it.

Before handling modules, touch a grounded metal object to discharge the static electricity from the

human body.

Failure to do so may cause failure or malfunctions of the module.

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 11.)

CAUTION

When transporting lithium batteries, make sure to treat them based on the transportation regulations.

(Refer to Appendix 10 for details of the relevant models.)

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CONDITIONS OF USE FOR THE PRODUCT

(1) Mitsubishi programmable controller ("the PRODUCT") shall be used in conditions;

i) where any problem, fault or failure occurring in the PRODUCT, if any, shall not lead to any major

or serious accident; and

ii) where the backup and fail-safe function are systematically or automatically provided outside of

the PRODUCT for the case of any problem, fault or failure occurring in the PRODUCT.

(2) The PRODUCT has been designed and manufactured for the purpose of being used in general

industries.

MITSUBISHI SHALL HAVE NO RESPONSIBILITY OR LIABILITY (INCLUDING, BUT NOT

LIMITED TO ANY AND ALL RESPONSIBILITY OR LIABILITY BASED ON CONTRACT,

WARRANTY, TORT, PRODUCT LIABILITY) FOR ANY INJURY OR DEATH TO PERSONS OR

LOSS OR DAMAGE TO PROPERTY CAUSED BY the PRODUCT THAT ARE OPERATED OR

USED IN APPLICATION NOT INTENDED OR EXCLUDED BY INSTRUCTIONS, PRECAUTIONS,

OR WARNING CONTAINED IN MITSUBISHI'S USER, INSTRUCTION AND/OR SAFETY

MANUALS, TECHNICAL BULLETINS AND GUIDELINES FOR the PRODUCT.

("Prohibited Application")

Prohibited Applications include, but not limited to, the use of the PRODUCT in;

• Nuclear Power Plants and any other power plants operated by Power companies, and/or any

other cases in which the public could be affected if any problem or fault occurs in the PRODUCT.

• Railway companies or Public service purposes, and/or any other cases in which establishment of

a special quality assurance system is required by the Purchaser or End User.

• Aircraft or Aerospace, Medical applications, Train equipment, transport equipment such as

Elevator and Escalator, Incineration and Fuel devices, Vehicles, Manned transportation,

Equipment for Recreation and Amusement, and Safety devices, handling of Nuclear or

Hazardous Materials or Chemicals, Mining and Drilling, and/or other applications where there is a

significant risk of injury to the public or property.

Notwithstanding the above, restrictions Mitsubishi may in its sole discretion, authorize use of the

PRODUCT in one or more of the Prohibited Applications, provided that the usage of the PRODUCT

is limited only for the specific applications agreed to by Mitsubishi and provided further that no

special quality assurance or fail-safe, redundant or other safety features which exceed the general

specifications of the PRODUCTs are required. For details, please contact the Mitsubishi

representative in your region.

A - 8

REVISIONS

*The manual number is given on the bottom left of the back cover.

Japanese Manual Version SH-3532-L

1995 MITSUBISHI ELECTRIC CORPORATION

Print Date *Manual Number Revision

Jul., 1996 IB (NA) 66608-A First edition

Dec., 2003 IB (NA) 66608-B

SAFETY PRECAUTIONS, CONTENTS, Related Manuals, Section 1.1, 1.2, 2.1,

3.1.1, 3.1.2, 3.2, 3.3.1, 3.3.2, 3.3.3, Chapter 4, Section 5.1, 5.2, 5.3, 5.4, 6.1, 6.2,

6.3, 7.1, 8.1, 8.2, 8.2.1, 8.3, 8.4.1, 8.4.3, 8.5, 8.6, 8.7, 8.7.1, 8.7.2, 8.7.3, 8.8, 8.9,

8.10, 8.10.1, 8.10.2, 9.1, 9.2, 9.3, 9.3.1, 9.3.3, 9.4, 9.5, 9.6, 9.7, 9.8, 9.9, 9.9.1,

9.9.2, 10.1, 10.2, 10.3, 10.4, 10.5, 10.6, 10.6.1, 10.6.2, 10.6.3, 10.6.4, 10.6.5,

10.6.6, 10.7, 10.7.1, 10.8, 11.1, 11.2, 11.3, 11.4, 11.5, 11.6, 11.7, 12.1, 12.1.1,

12.1.2, 12.1.3, 12.1.4, 12.1.5, 12.1.6, 12.1.7, 12.2, 12.3, 12.4, Chapter 13, 14,

Section 14.1, 14.2, 14.3, 15.1, 15.2, 15.3, 16.1.1, 16.1.2, 16.2, 16.3, Chapter 17,

Section 17.1, 17.1.1, 17.2, 17.4, 17.5, 18.1, 18.2, 18.3, 18.4, 18.6, 18.7, 19.1,

19.4.1, 19.5, 19.6, 19.7, 19.7.1, 19.7.2, 19.8, 21.1, 21.2, 21.3, 21.3.1, 21.3.2,

21.4, 21.4.1, 21.4.2, 22.2.1, 22.2.2, 22.2.3, 22.2.4, 22.2.5, 22.2.6, 22.2.7, 22.2.8,

22.2.9, 22.2.10, 22.3, 22.3.1, 22.3.2, 22.5, 22.5.1, 22.5.2, Appendix 1.1, 1.4, 1.6,

2.3, 4.4.1, 4.2, 4.3, 4.6, 4.10, 4.11, 4.12, 5.1, 5.2, 6.2

Section 2.2, 2.2.1, 7.2, 8.2.2, 19.8, Chapter 20, Section 20.1, 20.1.1, 20.1.2,

20.1.3, 20.1.4, 20.1.5, 20.1.6, 20.2, 20.2.1, 20.2.2, 20.2.3, 20.2.4, 20.2.5, 20.2.6,

20.2.7, 22.4, Appendix 7, 8, 9, 9.1, 9.2, WARRANTY

Oct., 2006 IB (NA) 66608-C

SAFETY PRECAUTIONS, Section 3.1.1, 3.1.2, 3.2, 3.3.1, 3.3.2, Chapter 4,

Section 5.3, 6.1, 7.1, 9.1, 9.3, 9.3.1, 9.9.2, 12.1.2, 12.1.5, 12.4, 14.1, 15.1, 15.2,

16.1.1, 16.1.3, 16.2, 16.3, 17.1, 17.1.1, 17.2, 17.5, 18.1, 18.2, 18.3, 19.1, 19.6,

19.7, Chapter 20, Section 20.1.3, 21.5, 21.6, 22.2.6, 22.2.7, 22.3.3, Appendix 2,

3, 5.2, 6.2, 9.2

Section 14.2

Section 14.3 Section 14.2

May, 2007 IB(NA)66608-D

Related Manuals, Section 19.7.1, 19.7.2, 20.1.3, 20.1.4, 20.2.7, 22.3,

APPENDIX 2, APPENDIX3

Dec., 2009 IB(NA)66608-E

SAFETY PRECAUTIONS, Section 3.3.1, Chapter 13, Section 15.1, 16.1.2,

16.1.3, 18.3, Chapter 20, 21.3.1, 21.3.2, 22.3, 22.3.1, 22.3.3, 22.3.4, 22.3.5,

22.3.6, 22.3.7, 22.3.8, 22.3.9, APPENDIX 2, APPENDIX 3

CONDITIONS OF USE FOR THE PRODUCT, APPENDIX 2, 3, 11, 11.1, 11.2

This manual confers no industrial property rights or any rights of any other kind, nor dose it confer any patent licenses.

Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property rights which may

occur as a result of using the contents noted in this manual.

Partial correction

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