SAJ VM1000 - Page 140

VM1000 Series
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No. Fault Phenomenon Possible reasons Solutions
VFD is damaged (thermal
coupling or other)
services
6
Motor stop rotating
after VFD operates
Motor damage or stalling.
Incorrect parameter setting
(primarily is motor
parameters in F2 group )
Replace motor or clear
mechanical failure.
Check and reset F2
parameters
7
DI terminal is
invalid
Parameter setting error.
short-circuit sheet
between OP and + 24V is
loose.
Control board fault.
Check and re-set the
related parameters of F5
group .
Rewiring.
Manufacturers seek
services.
8
When it is
closed-loop vector
control, the motor
speed can not be
improved.
Code disk is damaged or
wrong connections.
The internal components of
VFD is damaged.
Replace the code disk,
reconfirmed wiring.
Seek for service.
9
The VFD frequently
reports the fault of
overcurrent and
overvoltage
Motor parameter setting
wrong.
The acceleration and
deceleration time is
inappropriate.
Load fluctuations.
Reset parameters of F2
group or conduct motor
tuning.
Set the appropriate
acceleration and
deceleration time.
Seek for manufacturers
services.
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