Mitsubishi MELSEC Q Series User manual

A- 1
SAFETY PRECAUTIONS
(Read these instructions before using this equipment.)
Before using this product, please read this handbook 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 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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[Design Precautions]
WARNING
●For the operation status of each station at communication error in each station, refer to the
respective manual for each station.
The communication error may result in an accident due to incorrect output or malfunction.
●For the operating status of each station after a communication failure, refer to relevant manuals for
the network. Erroneous outputs and malfunctions may lead to accidents.
Not doing so can cause an accident due to false output or malfunction.
●When using the notification function, the pager receiver may not be contacted due to the frequency
transmission status from the system setup environment and error on the receiver side.
To ensure the safety of the programmable controller system, install a call circuit with a lamp display
or buzzer sound.
●To prevent the malfunction of the programmable controller system due to harmful e-mails, take
preventive measures (such as antivirus measures) so that the mail server for this module does not
receive harmful e-mails.
●When performing the control of the programmable controller in operation (changing data) by
connecting a peripheral devices to the CPU module or personal computer, etc. to the intelligent
device module, configure an interlock circuit in a sequence program so the safety of the overall
system is always maintained.
Also when performing other controls of the programmable controller in operation (changing program
and operation status (status control)), read this manual carefully and confirm if the overall safety is
maintained.
Especially, when this control is performed to a remote programmable controller from an external
device, troubles that have occurred on the programmable controller side may not be able to
immediately be handled if there is a data communication error.
Define a troubleshooting agreement between external devices and the programmable controller
CPU for data communication error occurrences, as well as construct an interlock circuit in the
sequence program.
●When connecting a peripheral device to the CPU module or performing control of a programmable
controller which is being run through a BASIC program, configure an interlock circuit in the sequence
program so that the system overall is operating on the safe side at all times. Also before exercising
other control (program change, operating status change (status control)) on the running
programmable controller, read the manual carefully and fully confirm safety. Especially for the above
control on the remote programmable controller from, an immediate action may not be taken for
programmable controller trouble due to a data communication fault. In addition to configuring up the
interlock circuit in the sequence program, corrective and other actions to be taken as a system for
the occurrence of a data communication fault should be predetermined between and programmable
controller CPU.

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[Design Precautions]
WARNING
●Do not write data into the "system area" of the buffer memory of intelligent function modules.
Also, do not use any "use prohibited" signals as an output signal to an intelligent function module
from the programmable controller CPU.
Writing data into the "system area" or outputting a signal for " use prohibited" may cause a
programmable controller system malfunction.
CAUTION
●Do not bunch the control wires or communication cables with the main circuit or power wires, or
install them close to each other.
They should be installed 100 mm (3.94 inch) or more from each other.
Not doing so could result in noise that may cause malfunction.
●When using the module while values, such as buffer memory set values, are registered in the Flash
ROM, do not turn off the power supply for the module loading station nor reset the programmable
controller CPU.
If the power supply for the module loading station is turned off or the programmable controller CPU is
reset while any values are registered, the data contents in the Flash ROM become inconsistent and
as a result the values must be set again in the buffer memory, etc. and reregistered to the Flash
ROM.
Also, this may cause failure and malfunction of the module.
●If a BASIC program is registered in the flash ROM in the module, do not power OFF or reset the
programmable controller CPU at the station where the module is installed during registration.
If it is performed during registration, the data contents in the flash ROM will be erratic and it will be
necessary to reset the setting values, etc. in the buffer memory and register them again in the flash
ROM. It could also cause the module to break down or malfunction.
●When changing the operating status of the programmable controller CPU (such as remote RUN/
STOP) from the external device, select "Always wait for OPEN (Communication possible at STOP time)"
for the "Initial timing" setting in the network parameter. The communication line will be closed when "Do
not wait for OPEN (Communications impossible at STOP time)" is selected and the remote STOP is
executed from the external device. Consequently, the programmable controller CPU cannot reopen the
communication line, and the external device cannot execute the remote RUN.

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[Installation Precautions]
CAUTION
●Use the programmable controller in an environment that meets the general specifications contained
in the user's manual of the CPU module to use.
Using this programmable controller in an environment outside the range of the general specifications
may cause electric shock, fire, malfunction, and damage to or deterioration of the product.
●While pressing the installation lever located at the bottom of module, insert the module fixing tab into
the fixing hole in the base unit until it stops. Then, securely mount the module with the fixing hole as
a supporting point.
If the module is not installed properly, it may cause the module to malfunction, fail or fall off.
Secure the module with screws especially when it is used in an environment where constant
vibrations may occur.
●Tighten the screws within the range of specified torque.
If the screws are loose, it may cause the module to fallout, short circuits, or malfunction.
If the screws are tightened too much, it may cause damage to the screw and/or the module, resulting
in fallout, short circuits or malfunction.
●Before mounting/dismounting the module, be sure to shut off all phases of external power supply
used by the system.
Failure to do so may cause product damage.
●Do not directly touch the conductive area or electronic components of the module.
Doing so may cause malfunction or failure in the module.

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[Wiring Precautions]
CAUTION
●When turning on the power and operating the module after installation and wiring are completed,
always attach the terminal cover that comes with the product.
There is a risk of electric shock if the terminal cover is not attached.
●Perform correct pressure-displacement, crimp-contact or soldering for external wire connections
using the tools specified by the manufactures.
Incorrect connection may cause short circuits, fire, or malfunction.
●Be sure to fix communication cables or power supply cables leading from the module by placing
them in the duct or clamping them.
Cables not placed in the duct or without clamping may hang or shift, allowing them to be accidentally
pulled, which may cause a module malfunction and cable damage.
●Shut off the external power supply (all phases) used in the system before connecting the AUI cable.
●When connecting a cable with connector to the module, connect the connector part to the module
securely.
●Attach connectors to the module securely.
●Before connecting the cables, check the type o f interface to be connected.
Connecting or erroneous wiring to the wrong interface may cause failure to the module and external
devices.
●Tighten the terminal screws within the range of specified torque.
If the terminal screws are loose, it may result in short circuits or malfunction.
If the screws are tightened too much, it may cause damage to the screw and/or the module, resulting
in fallout, short circuits or malfunction.
●When removing the communication cable or power supply cable from the module, do not pull the
cable. When removing the cable with a connector, hold the connector on the side that is connected
to the module.
When removing the cable connected to the terminal block, first loosen the screws on the part that is
connected to the terminal block.
Pulling the cable that is still connected to the module may cause malfunction or damage to the
module or cable.
●Be careful not to let foreign matters such as sawdust or wire chips get inside the module.
They may cause fires, failure or malfunction.
●The top surface of the module is covered with protective film to prevent foreign objects such as cable
offcuts from entering the module when wiring.
Do not remove this film until the wiring is complete.
Before operating the system, be sure to remove the film to provide adequate heat ventilation.
●Correctly solder coaxial cable connectors. Incomplete soldering may result in malfunction.

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[Startup and Maintenance precautions]
[Operation Instructions]
[Disposal Precautions]
CAUTION
●Do not disassemble or modify each module.
Doing so could cause failure, malfunction injury or fire.
●Before mounting/dismounting the module, be sure to shut off all phases of external power supply
used by the system.
Failure to do so may cause module failure or malfunctions.
●Do not install/remove the module to/from the base unit, or the terminal block to/from the module
more than 50 times after the first use of the product. (IEC 61131-2 compliant)
Failure to do so may cause malfunction.
●Do not touch the connector while the power is on.
Doing so may cause malfunction.
●Before cleaning up and retightening terminal screws and module fixing screws, be sure to shut off all
phases of external power supply used by the system.
Not doing so may cause failure or malfunction of the module.
If the screws are loose, it may cause the module to fallout, short circuits, or malfunction.
If the screws are tightened too much, it may cause damages to the screws and/or the module,
resulting in the module falling out, short circuits or malfunction.
●Always make sure to touch the grounded metal to discharge the electricity charged in the body, etc.,
before touching the module.
Failure to do so may cause a failure or malfunctions of the module.
CAUTION
●When performing the control of the programmable controller in operation (especially changing data,
program, and operation status (status control)) by connecting a personal computer, etc. to the
intelligent function module, read this manual carefully and confirm if the overall safety is maintained.
Failure to perform correct operations to change data, program, or the status may result in system
malfunction, machine damage, or an accident.
●When performing control (in particular, changing data, changing a program or changing the
operation status (status control)) of the programmable controller during operation using a BASIC
program, do so only after reading the user's manual thoroughly and taking adequate safety
precautions.
If there are errors when changing data, changing a program or in status control, it could result in
system malfunction, or cause mechanical damage or accidents.
CAUTION
●When disposing of this product, treat it as industrial waste.

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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.

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REVISIONS
* The handbook number is given on the bottom left of the back cover.
Japanese Handbook Version L-08049-F
© 2005 MITSUBISHI ELECTRIC CORPORATION
Print Date * Handbook Number Revision
Apr., 2005 L(NA)-08050ENG-A First edition
Oct., 2005 L(NA)-08050ENG-B
Appendix 1
Contents, Chapter 1, Section 3.1, Section 3.2.1, Section 3.3, Section 3.4,
Section 3.5, Section 3.6.1, Section 3.6.2, Section 4.1, Section 4.2,
Appendix 1→Appendix 2
May, 2006 L(NA)-08050ENG-C
Chapter 4
Contents, Chapter 1, Section 2.1, Section 2.7, Section 3.1,
Chapter 4→Chapter 5, Appendix 1, Appendix 2
Mar., 2008 L(NA)-08050ENG-D
Term revision (whole), Appendix 2.1
Nov., 2012 L(NA)-08050ENG-E
MELSEC-AnS/QnAS series
Section 1.2, Appendix 2
SAFETY PRECAUTIONS, Chapter 1 to 9, Appendix
This handbook confers no industrial property rights or any rights of any other kind, nor does 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 handbook.
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