Mitsubishi MELSEC-WS series, User Manual

Page: 23 / 152

Chapter 2
20
On safety
UL/CSA applications
 Only use the following cables:
– for spring clamp terminals: 24 to 16 AWG, copper, suitable for temperatures of
60 to 75 °C
– for plug-in terminals: 30 to 12 AWG, copper, suitable for temperatures of 60 to
75 °C

The plug-in terminal tightening torque must be 0.5 to 0.6 N·m.
 Use the devices only in an environment with a pollution degree of 2 or better.
 The modules shall be supplied by an isolating power source protected by an
UL248 fuse, rated max. 100/V, where V is the DC supply voltage with the
maximum value of 42.4 V DC, such that the limited voltage/current requirements
of UL508 are met.

Max. WS0-XTIO Q1 … Q4 total current I
sum
= 3.2 A
 Network modules (WS0-GETH and WS0-GCC1) are intended to be used with
Class 2. Therefore the CPU module must be supplied in this case with a Class 2
power source or Class 2 transformer in accordance with UL 1310 or UL 1585.
The safety functions are not evaluated by UL. The approval is accomplished
according to UL 508, general use applications.
Note