Safety Precautions - Mitsubishi MELSEC-Q Series 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. For the safety precautions of the
programmable controller system, please read the User's Manual for the CPU module.
In this section, the safety precautions 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 precautions 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]
Provide a safety circuit outside the programmable controller so that the entire system will operate
safely even when an external power error or programmable controller failure occurs.
Failure to do so may cause an accident due to incorrect output or malfunction.
(1) Outside the programmable controller, create an emergency stop circuit or interlock circuit to
prevent mechanical damage due to excess of position control upper limit/lower limit.
(2) The machine OPR control is controlled by the OPR direction and OPR speed data and
deceleration starts when the near-point dog turns ON. Thus, if the OPR direction is incorrectly
set, deceleration may not start and the motor continues rotating. Create an interlock circuit
outside the programmable controller to prevent mechanical damage.
(3) If the positioning module detects an error, it directs the motor to decelerate and stop.
Make sure that the OPR data and positioning data are within the parameter setting values.
Do not install the control lines, communication cables, pulse input wiring, and pulse output wiring
together with the main circuit or power lines, and also do not bring them close to each other.
Keep a distance of 100mm (3.94inch) or more between them.
Failure to do so may cause a malfunction due to noise.

SAFETY PRECAUTIONS

(Read these precautions before use.)
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.
DANGER
CAUTION
A
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