Goodrive350 IP55 High-ingress Protection Series VFD Installation Guide
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4.5.4 Bypass connection
In some critical occasions, industrial frequency conversion circuit is necessary to ensure
proper operation of the system when VFD fault occurs.
In some special cases, eg, only soft startup is needed, it will converts to power-frequency
operation directly after soft startup, corresponding bypass link is also needed.
Do not connect any power source to VFD output terminals U, V and W. The voltage
applied to motor cable may cause permanent damage to the VFD.
If frequent switch-over is needed, users can use the switch which carries mechanical interlock
or a contactor to ensure motor terminals will not be connected to input power cables and VFD
output ends simultaneously.
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