Inovance MD320 Series User Manual

Fault Diagnosis and Solution MD320/MD320N User Manual
174
No. Fault Phenomenon Possible Cause Solution
7 DI terminal disabled
The parameter is set 1.
wrongly. 2.
The short circuit copper bar 3.
between OP and +24V is
loosen.
Control board fault.4.
Check and reset Group F4 1.
related parameters.
Reconnect the cables. 2.
Consult the manufacturer.3.
8
In t he c l os e l oo p
vector control mode,
the motor speed is
always low.
The PG is d amage d or 1.
cable connection is wrong.
The internal parts of the 2.
inverter are damaged.
Replace the PG and1.
reconrm the cable 2.
connection. 3.
Consult the manufacturer.4.
9
The inverter
frequently reports
over current fault and
over voltage fault.
The motor parameters are 1.
set wrongly.
Acceleration/deceleration 2.
time is improper.
Load uctuates.3.
Reset Group F1 1.
parameters or perform 2.
motor tuning.
Set proper acceleration/3.
deceleration.
Consult the manufacturer.4.
10
E R R 1 7 a l a r m i s
reported upon
power-on.
The soft start contactor is not
switched on.
Check if the contactor 1.
cables are loosened;
Check if the contactor has 2.
fault;
Check if the 24V power 3.
supply of the contactor
has fault;
Consult the manufacturer.4.

Inovance MD320 Series Specifications

General

Brand	Inovance
Model	MD320 Series
Category	Inverter
Language	English