Veichi AC100-T3-1R5G Manual page 17

AC100 HIGH-PERFORMANCE VC INVERTER MANUAL INSTALLATION AND WIRING
Chart 3-5：AC100 Series Inverter System Earth
Note: motor must earth as close as possible. Motor shell can't be connected to the inner earth terminal of the inverter
and it can't share the earth net with the control system either.
Power cable, motor cable, control cable of inverter
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Shielding layer (reticulate/armored) should be winded reliably by cable earth card and then fixed to inverter earth piece
by bolt. Please refer to the following chart.
Chart 3-6：Cable Earth Card for Cable Earth
Correspondence between inverter and motor cable length and carrier frequency
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When wiring distance between inverter and motor is long (especially low-frequency output), cable voltage drop will
cause the motor torque reduction. Moreover, high-frequency leakage current will increase, thereby causing an increase
of inverter output current, which would cause the inverter over current trip. And the current detection accuracy and
running stability would be seriously affected. Please refer to the cable length in the following table to adjust the carrier
frequency. When system requires the wiring distance to be more than 100m, please adopt distributed capacity reduce
measure (Such as "no metal conductor covers cable", "wire each phase cable apart" and so on)
Cable length <20m 20~50m 50~100m >100m
Carrier frequency 0.6~16kHz 0.6~8kHz 0.6~4kHz 0.6~2kHz
Chart 3-2：Correspondence between Inverter and Motor Cable Length and Carrier Frequency
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