Control Circuit Wiring Precautions
Observe the following precautions when wiring control circuits.
Separate control circuit wiring from main circuit wiring (terminals R/L1, S/L2, T/L3, B1, B2, U/T1, V/T2,
•
W/T3,
Separate wiring for control circuit terminals MA, MB, MC, M1, M2, M3, M4, M5, and M6 (digital out-
•
puts) from wiring to other control circuit terminals.
If using an optional external power supply, it shall be a UL Listed Class 2 power supply source.
•
2
Use twisted-pair or shielded twisted-pair cables for control circuits to prevent operating faults.
•
Ground the cable shields with the maximum contact area of the shield and ground.
•
Cable shields have to be grounded on both cable ends.
•
28
2-
,
1,
2, and
3) and other high-power lines.