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[Design Precautions]
[Installation Precautions]
CAUTION
● The safety category is evaluated by the whole equipment. Make sure that the whole equipment
meets the requirements before use.
● Use the programmable controller in an environment that meets the general specifications contained
in this manual.
Using this programmable controller 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.
● The life of safety relay used for the safety relay module depends on the open-close condition and
load. Be sure to operate the equipment by use conditions to make sure that the number of allowable
times that the relay opens/closes.
● Do not install the wiring of external devices or communication cables together with the main circuit or
power lines, or bring them close to each other. Keep a distance of 100mm (3.94 inch) or more
between them.
Not doing so could result in noise that would cause erroneous operation.
WARNING
● Do not use the product in flammable gas atmosphere or explosive gas atmosphere.
Doing so may result in fire or explosion due to such as an arc caused by opening/closing the relays.
CAUTION
● For Q series safety relay module, while pressing the module mounting lever located at the bottom of
a module, fully insert the module fixing projection into the fixing hole on the base unit. Then, mount
the module with the fixing hole as a supporting point.
Incorrect loading of the module can cause a malfunction, failure or drop.
When using the programmable controller 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.
● Make sure to fix CC-Link safety relay module and extension safety relay module with a DIN rail fixing
bracket.