Goodrive270 series VFD for fan and pump Installation guidelines
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must be cut off. The VFD is equipped with the motor thermal overload protection function,
which can block output and cut off the current (if necessary) to protect the motor.
(4) Bypass connection
In some critical scenarios, the power/variable frequency conversion circuit needs to be
configured to ensure proper operation of the system when a fault occurs to the VFD.
In some special scenarios, such as in soft startup, power-frequency running is directly
performed after the startup, which requires bypass connection.
Do not connect any power source to the VFD output terminals U, V, and W.
The voltage applied to the motor cable may cause permanent damage to the
If frequent switchover is needed, you can use the switch which carries mechanical interlock or
a contactor to ensure motor terminals are not connected to input power cables and VFD output
ends simultaneously.
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