Safety Precautions - Mitsubishi Electric GT11 User Manual

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 "WARNING" and "CAUTION".
WARNING
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]
Some failures of the GOT or cable may keep the outputs on or off.
Some failures of a touch panel may cause malfunction of the input objects such as a touch switch.
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 error (including cable disconnection) occurs while monitoring on the GOT,
communication between the GOT and PLC CPU is suspended, and the GOT becomes inoperative
as described below:
(1) GT1155-QSBD, GT1150-QLBD: Become inoperative
(2) PLC CPU shuts down and the GOT becomes inoperative.
For the system configuration with GOT, assuming communication error occurs in the GOT, the
switches for critical operation to the system should be set in the device other than GOT. False output
or malfunction may occur.
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.

SAFETY PRECAUTIONS

(Always read these precautions 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.
WARNING
- 1
A