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SAFETY PRECAUTIONS
(Always read these precautions 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 precautions given in this manual are concerned with this product.
In this manual, the safety precautions are ranked as "DANGER" and "CAUTION".
Note that the
caution level may lead to a serious accident 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]
DANGER
Some failures of the GOT, communication unit 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: The CPU becomes faulty and the GOT becomes inoperative.
For other than bus connection: The GOT becomes inoperative.
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.
DANGER
Indicates that incorrect handling may cause hazardous
conditions, resulting in death or severe injury.
CAUTION
Indicates that incorrect handling may cause hazardous
conditions, resulting in medium or slight personal injury or
physical damage.
