Yaskawa Matrix Converter User Manual Page 58

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2-24
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, U/T1, V/T2, W/T3,
r2, s2, t2, p1, and n1) and other high-power lines.
Separate wiring for control circuit terminals MA, MB, MC, M1, and M2 (contact outputs) from wiring to
other control circuit terminals.
Use shielded twisted-pair cables for control circuits to prevent operating faults. Process cable ends as
shown in Fig 2.23.
Connect the shield wire to terminal E (G).
Insulate the shield with tape to prevent contact with other signal lines and equipment.
Use a class 2 power supply (UL standard) when connecting to the control terminals.
Fig 2.23 Processing the Ends of Shielded Twisted-Pair Cables
Shield sheath
Armor
Connect to shield sheath
terminal at MxC (terminal E (G))
Insulate with tape
Do not connect here.
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