Electrical Design Guide
‑48‑
● The protective grounding conductor must be a yellow/green cable comprised of
copper conductors. Do not connect the protective grounding conductor to a
switching device (such as a circuit breaker) in serial.
● Ground the grounding terminal properly. Improper grounding will lead to device
malfunction or damage.
● Do not connect the grounding terminal to the N terminal of the neutral wire of the
power supply.
● It is recommended to install the drive to a conductive metal surface. Ensure the
whole conductive bottom of the drive is connected properly to the mounting face.
● Tighten the grounding screw with specified tightening torque to prevent the
protective grounding conductor from being secured improperly.
Single-drive grounding
Installation of an individual drive:
Table 3–14 Single‑drive grounding
No.
Description
①
Input protection (fuse or circuit breaker) Connect the lower end of the
fuse to the filter.
②
Input power supply
③
Do not ground the DC bus terminal or the regenerative resistor terminal.
④
Connect the output PE terminal of the servo drive to the motor output
cable shield.
⑤
Connect the PE cable on the input power supply side to the input PE
terminal of the servo drive.
⑥ Ground the motor enclosure.
⑦
Three‑phase motor
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