Inovance MD520 Series Commissioning Guide

Troubleshooting
‑101‑
No.
Fault Possible Cause Solution
7
DI inactive
The related parameters
are set incorrectly.
Check and set the parameters in
group F4 again.
The external signal is
incorrect.
Re‑connect the external signal
cable.
The jumper between OP
and +24 V becomes
loose.
Secure the jumper between OP
and +24V.
The control board is
faulty.
Contact the agent or Inovance for
technical support.
8
The motor speed
cannot be
increased in the
FVC mode.
The encoder is faulty. Replace the encoder disk and
double check the cable
connection.
The encoder cable is
connected improperly
or in poor contact.
Reconnect the encoder to ensure
good contact.
The PG card is faulty. Replace the PG card.
The driver board is
faulty.
Contact the agent or Inovance for
technical support.
9 Frequent
overcurrent and
overvoltage faults
Motor parameters are
set incorrectly.
Reset motor parameters or
perform motor auto‑tuning.
The acceleration/
deceleration time is
improper.
Set proper acceleration/
deceleration time.
The load fluctuates. Contact the agent or Inovance for
technical support.
10
"E017.1" is
detected upon
power‑on or
running.
The soft startup
contactor is not closed.
Check whether the contactor
cable is loose.
Check whether the contactor is
faulty.
Check whether 24 V power
supply of the contactor is faulty.
Contact the agent or Inovance for
technical support.
11
The motor coasts
to stop or the
brake fails during
deceleration or
deceleration to
stop.
The encoder is
disconnected, or
overvoltage stall
suppression protection
is enabled.
If the AC drive is in the FVC mode
(F0‑01 = 1), check the encoder
cable connection.
If a braking resistor is configured,
disable the overvoltage stall
suppression protection function
by setting F3‑23 to 0.

Inovance MD520 Series Specifications

General

Brand	Inovance
Model	MD520 Series
Category	DC Drives
Language	English