YASKAWA L1000V Technical Manual page 209

WARNING! Electrical Shock Hazard. Switch off and lock power supply and lock the switch before wiring terminals. Failure to comply
could result in serious injury or death.
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Installing a Residual Current Device (RCD) or a Residual Current Monitoring Device (RCM)
Residual currents occurring in drive installations can contain AC, DC, and high frequency components that may prevent
a normal RCD/RCM from operating as desired. If an RCD/RCM is required in the installation, always use an all-current-
sensitive device (Type B according to IEC 60755) to ensure proper ground fault interruption.
Leakage currents generated by the drive during normal operation may trip an RCD or RCM even if a ground fault is not
present.
Factors that influence the leakage current are:
• Size of the AC drive
• AC drive carrier frequency
• Motor cable type and length
• EMI/RFI filter
If the RCD/RCM trips spuriously consider changing these items or use an RCD/RCM with a higher trip level.
Note: Install a RCD/RCM designed specifically for AC drives. The operation time should be at least 0.1 s with sensitivity amperage of
at least 200 mA per drive. The output waveform of the drive may cause an increase in leakage current. This may in turn cause the
leakage braker to malfunction. Increase the sensitivity amperage or lower the carrier frequency to correct the problem.
YASKAWA EUROPE SIEP YASKAWA AC Drive L1000V Technical Manual
8.4 Installing Peripheral Devices
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