Mitsubishi Electric WS0-CPU0 Operating Manual page 8

[Startup and Maintenance Precautions]
 Do not touch any terminal while power is on.
Doing so will cause electric shock.
 Shut off the external power supply for the system in all phases before cleaning the module or
retightening the terminal screws. Failure to do so may result in electric shock.
Tighten the terminal screw within the specified torque range. Undertightening can cause short
circuit, fire, or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short circuit, or malfunction.
 Safety-oriented devices must be suitable for safety related signals.
A function interruption of safety outputs results in a loss of the safety functions so that the risk of
serious injury exists.
Do not connect any loads that exceed the rated values of the safety outputs.
Wire the MELSEC-WS safety controller so that 24 V DC signals cannot unintentionally contact
safety outputs.
Connect the GND wires of the power supply to earth so that the devices do not switch on when the
safety output line is applied to frame potential.
Use suitable components or devices that fulfill all the applicable regulations and standards.
Actuators at the outputs can be wired single-channeled. In order to maintain the respective Safety
Integrity Level the lines have to be routed in such a manner that cross circuits to other live signals
can be excluded, for example by routing them within protected areas such as in a control cabinet or
in separate sheathed cables.
5
WARNING