Mitsubishi Electric A960GOT User Manual page 2

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
!
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 Precautions]
• Some failures of the GOT main unit, communication module, communication board or cable may
keep the outputs on or off.
An external monitoring circuit should be provided to check for output signals which may lead to
a serious accident.
Not doing so can cause an accident due to false output or malfunction.
• If a communication fault (including cable disconnection) occurs during monitoring on the GOT,
communication between the GOT and PLC CPU is suspended and the GOT becomes
inoperative.
For bus connection
For other than bus connection
A system where the GOT is used should be configured to perform any significant operation to
the system by using the switches of a device other than the GOT on the assumption that a GOT
communication fault will occur.
Not doing so can cause an accident due to false output or malfunction.
• Do not use the GOT as the warning device that may cause a serious accident.
An independent and redundant hardware or mechanical interlock is required to configure the
device that displays and outputs serious warning.
Failure to observe this instruction may result in an accident due to incorrect output or
malfunction.
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• SAFETY PRECAUTIONS •
(Always read these instructions before using this equipment.)
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.
: The CPU becomes faulty and the GOT inoperative.
: The GOT becomes inoperative.
DANGER
!
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