Qirod QD100 Series User Manual

104
fault (troubleshooting)
e-11
Undervolta
ge fault

Abnormal
fluctuation of
input voltage;
Power network
capacity higher
than 200 kVA;
There is
switchable
capacitor to
improve power
factor on the
power network;
Machine that
SCRs is
connected to the
power network.

Inverter starts
the load already
in rotation.

There is
possible phase
failure.

The
deceleration
time is too short.

Install input reactor
or use braking
resistance.

Adopt
forward/reverse speed
tracking and restart
function (STR function)
(f500 = 1)

Set f418 = 2.

Determine the cause
of output phase failure
(such as poor
connection, open
circuit of output or
open circuit of motor
winding) and correct it.

Increase the
deceleration time (f011
or f519)

Enable overvoltage
fault protection (f415).
e-12
DC bus
undervolta
ge fault

Input voltage
is too low.

Check input voltage.

Set f417 to select
alarm or tripping.
Code of
fault
Type of fault
Possible cause
Measures
(troubleshooting)

Qirod QD100 Series Specifications

General

Brand	Qirod
Model	QD100 Series
Category	DC Drives
Language	English