Mitsubishi Electric WS0-CPU0 Operating Manual page 6

[Installation Precautions]
 Do not use the MELSEC-WS safety controller in flammable gas atmosphere or explosive gas
atmosphere. Doing so may result in a fire or explosion due to such as an arc caused by switching
the relays.
 Use the MELSEC-WS safety controller in an environment that meets the general specifications in
this manual. Failure to do so may result in electric shock, fire, malfunction, or damage to or
deterioration of the product.
 Latch the module onto the DIN mounting rail. Incorrect mounting may cause malfunction, failure or
drop of the module.
 To ensure full electromagnetic compatibility (EMC), the DIN mounting rail has to be connected to
functional earth (FE).
Ensure that the earthling contact is positioned correctly. The earthling spring contact of the module
must contact the DIN mounting rail securely to allow electrical conductivity.
 Shut off the external power supply for the system in all phases before mounting or removing the
module.
Failure to do so may result in damage to the product.
 Do not directly touch any conductive part of the module.
Doing so can cause malfunction or failure of the module.
 The MELSEC-WS safety controller is only suitable for mounting in a control cabinet with at least IP
54 degree of protection.
Failure to meet the installation method may cause the module to fail or malfunction due to the
deposition of dust or the adhesion of water.
3
WARNING
CAUTION