Control Circuit Wiring Precautions - YASKAWA E7 Installation Manual

Control Circuit Wiring Precautions

Observe the following precautions when wiring control circuits:
1. Separate control wiring from power/motor wiring (terminals R/L1, S/L2, T/L3, U/T1, V/T2, W/T3,
3) and other high-power lines.
2. Separate wiring for control circuit terminals MA, MB, MC, M1, M2, M3, and M4 (digital outputs) from wiring to other
control circuit terminals.
3. If using an optional external power supply, ensure it is a UL Listed Class 2 power supply source.
4. Use twisted-pair or shielded twisted-pair cables for control circuits to prevent operating faults. Prepare cable ends as
shown in Fig 2.7.
5. Connect the shield wire to terminal E(G).
6. Insulate the shield with tape to prevent contact with other signal lines and equipment.
Shield sheath
Connect to shield sheath
terminal E(G) at Drive
Fig 2.7 Preparing the Termination of Shielded Twisted-pair Cables
Electrical Installation 2 - 19
Insulation
Do not connect here.
Insulate with tape
, 1, 2, and