Control Circuit Wiring Precautions - Omron VARISPEED L7 Manual

Control Circuit Wiring Precautions

The following precautions for wiring the control circuits must be considered.
Control circuit and main circuit wiring should be separated (terminals R/L1, S/L2, T/L3, B1, B2, U/T1, V/
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T2, W/T3,
The wiring for control circuit terminals MA, MB, MC, M1, M2, M3, M4, M5, and M6 (contact outputs)
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should be separated from wiring to other control circuit terminals.
If an optional external power supply is used, it should be a UL Listed Class 2 power supply.
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2
Twisted-pair or shielded twisted-pair cables should be used for control circuits to prevent operating faults.
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The cable shields should be connected to the ground with the maximum contact area.
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Cable shields have to be grounded on both cable ends.
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22
2-
, 1, 2, and 3, PO, NO) and other high-power lines.