Mitsubishi MELSEC Q Series User manual

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•SAFETY PRECAUTIONS •
(Always read these instructions before using this equipment.)
Before using this product, please read this manual and the relevant manuals introduced in this manual
carefully and pay full attention to safety to handle the product correctly.
The instructions given in this manual are concerned with this product. For the safety instructions of the
programmable controller system, please read the CPU module user's manual.
In this manual, the safety instructions are ranked as "DANGER" and "CAUTION".
!DANGER
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 medium or slight personal injury or physical damage.
Note that the !CAUTION level may lead to a serious consequence according to the circumstances.
Always follow the instructions of both levels because they are important to personal safety.
Please save this manual to make it accessible when required and always forward it to the end user.
[Design Instructions]
!DANGER
• Install a safety circuit external to the PLC that keeps the entire system safe if there are problems
with the external power supply or PLC. Not doing so may cause false output or malfunction,
leading to accidents.
(1) Outside the PLC, construct mechanical damage preventing interlock circuits, e.g. emergency
stop circuits, protective circuits, forward/reverse or other conflicting operation interlocking
circuits, and upper and lower positioning limit switches.
(2) When the PLC detects either of the following problems, it will stop arithmetic operation and
turn off all outputs in the case of (a). In the case of (b), it will stop arithmetic operation and
hold or turn off all outputs according to the parameter setting.
(a) The overcurrent protection or overvoltage protection of the power supply module is
activated.
(b) The self-diagnostic function of the PLC CPU has detected a fault such as the watchdog
timer error.
In addition, all outputs may be turned on when there are problems undetectable by the PLC
CPU, such as in the I/O controller. Build a fail-safe circuit or provide a mechanism externally
of the PLC to operate the machine safely at such times. Refer to the CPU module user's
manual for fail-safe circuit examples.
(3) Output could be left on or off when there is trouble in the output module's relays, transistors,
etc. So build an external monitoring circuit that will monitor any output signal that could lead
to a serious accident.

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[Design Instructions]
!DANGER
• When overcurrent exceeding the rated load current or caused by a shorted load or the like flows
in the output module for a long time, it may cause smoke or fire. To prevent this, configure an
external safety circuit, such as fuses.
• Build a circuit that turns on the external power supply after the PLC power supply has been
turned on. If the external power supply is turned on first, it could result in false output or
malfunction.
• When there are communication problems with the data link, refer to the corresponding data link
manual for the operating status of each station. Not doing so could result in false output or
malfunction.
• When connecting a peripheral device to the CPU module or connecting a personal computer or
the like to the intelligent function module to exercise control (data change) on the running PLC,
configure up an interlock circuit in the sequence program to ensure that the whole system will
always operate safely.
Also before exercising other control (program change, operating status change (status control))
on the running PLC, read the manual carefully and fully confirm safety.
Especially for the above control on the remote PLC from an external device, an immediate
action may not be taken for PLC 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 the external device and PLC CPU.
!CAUTION
• Do not bundle the control wires or communication cables with the main circuit or power wires, or
run them close to each other.
They should be run 100mm (3.94in.) or more away from each other.
Not doing so could result in noise that would cause malfunction.
• When the output module is used to control a lamp load, heater, solenoid valve or the like, large
current (approximately 10 times greater than the normal) may flow when the output is turned
from OFF to ON. Choose an output module having a sufficient rated current.

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[Installation Instructions]
!CAUTION
• Use the PLC in an environment that meets the general specifications contained in this manual.
Using this PLC in an environment outside the range of the general specifications could result in
electric shock, fire, erroneous operation, and damage to or deterioration of the product.
• Hold down the module-loading lever at the module bottom, and securely insert the module-fixing
hook into the fixing hole in the base unit. Incorrect loading of the module can cause a
malfunction, failure or drop.
When using the PLC in the environment of much vibration, tighten the module with a screw.
Tighten the screw in the specified torque range. Undertightening can cause a drop, short circuit
or malfunction. Overtightening can cause a drop, short circuit or malfunction due to damage to
the screw or module.
• When installing extension cables, be sure that the base unit and the extension module
connectors are installed correctly.
After installation, check them for looseness.
Poor connections could cause an input or output failure.
• Securely load the memory card into the memory card loading connector.
After installation, check for lifting.
Poor connections could cause an operation fault.
• Completely turn off the external power supply before loading or unloading the module. Not doing
so could result in damage to the product.
• Do not directly touch the module's conductive parts or electronic components.
Touching the conductive parts could cause an operation failure or give damage to the module.
[Wiring Instructions]
!DANGER
• Completely turn off the external power supply before starting wiring. Not doing so could result in
electric shock or damage to the product.
• When turning on the power supply or starting operation after wiring work, always mount the
product with the supplied terminal cover.
Not doing so could result in electric shock.

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[Wiring Instructions]
!CAUTION
• Always ground the FG and LG terminals to the protective ground conductor. Not doing so could
result in electric shock or malfunction.
• Before wiring the module, confirm the rated voltage and terminal layout of the product.
Connecting a power supply that is different from the rating or incorrectly wiring the product could
result in fire or failure.
• External connectors should be crimped or pressure-welded with the specified tools, or correctly
soldered. Imperfect connections could result in short circuit, fires or malfunction.
• Tighten the terminal screws in the specified torque range.
Undertightening could result in short circuit, fire or malfunction.
Overtightening could cause damage to the screws and/or the module, resulting in drop, short
circuit or malfunction.
• Be careful not to allow foreign matter such as chips and wire off-cuts to enter the module.
Foreign matter could cause fire, failure, or malfunction.
• The module has an ingress prevention label on its top to prevent foreign matter, such as wire
offcuts, from entering the module during wiring.
Do not peel this label during wiring.
Before starting system operation, be sure to peel this label because of heat dissipation.
• 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 the QCPU User's Manual (Hardware Design, Maintenance and
Inspection).)
[Startup/Maintenance Instructions]
!DANGER
• Do not touch the terminals while power is on.
Doing so could cause electric shock.
• Correctly connect the battery. Do not charge, disassemble, heat, place in fire, short circuit, or
solder the battery.
Mishandling of the battery can cause heat generation, burst or ignition which could result in
injury or fire.
• Switch off all phases of the externally supplied power used in the system when cleaning the
module or retightening the terminal or module mounting screws.
Not doing so could result in electric shock.
Undertightening of terminal screws can cause a short circuit or malfunction.
Overtightening of screws can cause damages to the screws and/or the module, resulting in
fallout, short circuits, or malfunction.

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[Startup/Maintenance Instructions]
!CAUTION
• The online operations conducted for the running CPU module by connecting a peripheral device
(especially program modification, forced output, operating status change) should be performed
after you have read the manual carefully read and fully confirmed safety.
Operation mistakes could cause machine damage or accident.
• Do not disassemble or modify the modules.
Doing so could cause failure, malfunction, injury or fire.
• Completely turn off the externally supplied power used in the system before mounting or
removing the module. Not doing so could result in damage to the product.
• Do not mount/remove the module to/from the base unit or the terminal block more than 50 times
(IEC61131-2-compliant), after the first use of the product.
Failure to do so may cause module malfunctions.
• Before touching the module, always touch grounded metal, etc. to discharge static electricity
from human body, etc.
Not doing so can cause the module to fail or malfunction.
[Disposal Instructions]
!CAUTION
• When disposing of this product, treat it as industrial waste.

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REVISIONS
The manual number is given on the bottom left of the back cover.
Print Date Manual Number Revision
Dec., 1999 SH (NA)-080042-A First edition
Feb., 2000 SH (NA)-080042-B Addition model
QH42P, QX48Y57, QX70, QX71, QX72, QY18A
Addition
Chapter 4
Partial correction
Section 1.2, Chapter 5, 8.1,
Chapters 4 to 8 (changed into Chapters 5 to 9)
Apr., 2000 SH (NA)-080042-C Deletion
QY18A
Jul., 2000 SH (NA)-080042-D Addition model
QX28,QX40-S1,QY18A,QY22,QI60
Addition
Chapter 5
Partial correction
Section 1.2
Chapters 5 to 9 (changed into Chapters 6 to 10)
Nov., 2000 SH (NA)-080042-E Addition model
QY70, QY71
Addition
Section 1.3
Partial correction
CONTENTS, Section 3.3, 5.1
Jan., 2001 SH (NA)-080042-F Addition model
QY68A
Addition
Section 10.2
Partial correction
CONTENTS, Section 1.2, 3.3, 5.1, Chapters 7
Mar., 2001 SH (NA)-080042-G Partial correction
Section 2.4, 8.1
Jul., 2001 SH (NA)-080042-H Addition model
Q6TE-18S
Addition
Chapter 9, APP 1.3
Partial correction
CONTENTS, Section 2.1, 2.2, 2.4, 5.1
Chapters 9 to 10 (changed into Chapters 10 to 11)
Jul., 2002 SH (NA)-080042-I Addition model
QX41-S1, QX42-S1, A6CON4
Japanese Manual Version SH-080024-R
This manual 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 manual.
©1999 MITSUBISHI ELECTRIC CORPORATION

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Print Date Manual Number Revision
Mar., 2003 SH (NA)-080042-J Addition model
QX82
May, 2003 SH (NA)-080042-K Partial correction
Section 1.2, 2.2
May, 2003 SH (NA)-080042-L Addition model
QX82-S1
Partial correction
Section 1.2, 3.3
Addition
Section 2.15
Jul., 2004 SH (NA)-080042-M Partial correction
Section 1.2, 2.1 to 2.15, 3.1 to 3.12, 4.1, 4.2, 5.1, 8.1, 8.2.1, 8.2.2, 10
Jul., 2005 SH (NA)-080042-N Partial correction
SAFETY PRECAUTIONS, Section 3.3
Addition
Appendix 1.3
Apr., 2006 SH (NA)-080042-O Partial correction
SAFETY PRECAUTIONS, Section 4.1, Chapter6
Sep., 2006 SH (NA)-080042-P Partial correction
Section 11.1, 11.2, Appendix 1.2, 1.3
Oct., 2006 SH (NA)-080042-Q Addition model
QX50
Partial correction
SAFETY PRECAUTIONS, Section 2.10 to 2.16, 3.4 to 3.12, 4.1, 4.2
Addition
Section 2.9
Sep., 2007 SH (NA)-080042-R Addition model
QX41Y41P
Partial correction
Section 1.2, 1.3.3, 2.1 to 2.16, 3.1 to 3.12, 4.1, 4.3, 5.1, 7.1, 8.1, Chapter
10, Section 11.1, 11.2, Appendix 1.2
Addition
Section 4.2
Jun., 2008 SH (NA)-080042-S Addition model
QX10-TS, QX40-TS, QX80-TS, QY10-TS, QY40P-TS, QY80-TS
Partial correction
Section 1.2, 2.3 to 2.19, 3.3 to 3.15, 9.2, Chapter 10
Addition
Section 2.2, 2.6, 2.16, 3.2, 3.6, 3.14, 9.1, 9.3

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Print Date Manual Number Revision
Oct., 2008 SH (NA)-080042-T Addition model
QX40-H, QX70-H, QX80-H, QX90-H
Partial correction
Section 1.2.5, 1.3.1, 2.8 to 2.23, 9.2, Chapter 10
Addition
Section 2.7, 2.14, 2.19, 2.23