Delta ASDA-A3 Series User Manual page 49

Wiring
Pay special attention to the following when connecting the wiring:
1. When the power is off, do not touch R, S, T and U, V, W since the capacitance inside the
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servo drive can still contain a dangerously large amount of electric charge. Wait until the
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) is not long enough,
please use an AWG26 shielded twisted-pair cable that conforms to UL2464 specifications.
If it is over 20 meters (65.62 ft), please choose a signal cable with diameter two times
greater than AWG26 to avoid excessive signal attenuation.
4. When using RS-485, CAN, and DMCNET, please replace the standard wiring with shielded
twisted-pair cable to ensure the communication quality.
5. When selecting the wires, please refer to section 3.1.6.
6. Do not use any external capacitors or it might damage the servo drive.
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ASDA-A3
Revision December, 2017