Sinee EM500 - Electromagnetic Interference (EMI), Radio Frequency Interference (RFI); Leakage Current Circuit Breaker for Leakage Protection; Mechanical Vibration

EM500 Open-Loop Vector Control Inverter User Manual
377

If the set acceleration time is too long, confirm its parameters.
9.3.5Electromagnetic Interference (EMI) and Radio Frequency Interference
(RFI)

When inverter runs in high frequency switch status, it will generate EMI and RFI on
the control devices. Take following countermeasures:

Lower carrier frequency of inverter (F00.23).

Install a noise filter on the input side of inverter.

Install a noise filter on the output side of inverter.

Shield cable with a metal tube, and place inverter in a metal case.

Inverter and motor must be grounded reliably.

Main circuit and control circuit should be wired separately. Control circuit
should adopt shielded wire, and see Chapter 3 for wiring.
9.3.6Leakage Current Circuit Breaker for Leakage Protection
 When inverter runs, leakage current circuit breaker is triggered for leakage
protection.
Inverter outputs high-frequency PWM signal, which generate high-frequency
leakage current. Please select a leakage circuit breaker with trigger current ≥ 30mA. For a
regular circuit breaker, trigger current ≥ 200mA and active time at 0.1S or above.
9.3.7Mechanical Vibration

Fixed frequency of mechanical system resonates with carrier frequency of inverter.
Motor has no problem, but sharp noises generated by the mechanical system
resonate between fixed frequency of mechanical system and carrier frequency of inverter.
Please adjust carrier frequency F0-14 to avoid resonant frequency.

Fixed frequency of mechanical system resonates with output frequency of inverter.
Fixed frequency of mechanical system resonates with output frequency of inverter.
Please use the oscillation suppression function (F05.13) or install a vibration-proof rubber
at motor bottom plate and take any other vibration-proof measures.

PID Control Oscillation