Qirod QD100 Series User Manual

102
FAULT DIAGNOSIS AND MEASURES
Fault code, cause and measures
When fault (failure) occurs, the inverter takes the following actions: The keyboard panel
blinks to display the fault code, the inverter stops output and the motor freely stops.
Table 3.1 Fault display and measures
Code of
fault
Type of fault
Possible cause
Measures
(troubleshooting)
e-01
Over
Current
protection

Acceleration
time is too short.

V/f parameter
is wrongly set.

When the
inverter starts,
the load is still in
rotation.

Inverter is
supplying power
to low-
impedanc-e
motor.

Interphase
short circuit or
earthing failure.

Abrupt

fluctuation of
the load

Increase acceleration
parameter (f010 or
f618) and the
deceleration time
(f011 or f519)

Select the correct set
point for V/f.

Adopt
forward/reverse speed
tracking and restart
function (STR
function).

Tune the switching
frequency.

Check wiring to see if
there is Interphase
short circuit or earthing
failure.

Reduce fluctuation of
the load

Qirod QD100 Series Specifications

General

Brand	Qirod
Model	QD100 Series
Category	DC Drives
Language	English