Delta ASDA-A3 Series User Manual page 57

Wiring
Pay special attention to the following when wiring:
1. When the power is off, do not touch R, S, T and U, V, W since the capacitance inside the
servo drive can still contain a dangerously large amount of electric charge. Wait until the
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charging light is off.
2. Separate R, S, T and U, V, W from other wires. The separation should be at least 30 cm
(11.8 inches).
3. If the connection cable for CN2 (encoder) or CN5 (position feedback connector) is not long
enough, use a shielded twisted-pair cable that conforms to UL2464 specifications. If it is over
20 meters (65.62 ft), choose a signal cable with the diameter two times greater to avoid
excessive signal attenuation.
4. When using RS-485, CAN, and DMCNET, use the standard shielded twisted-pair cable to
ensure the communication quality.
5. When selecting the wires, refer to Section 3.1.6.
6. Do not use any external capacitor, or it might damage the servo drive.
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ASDA-A3