Suzhou Monarch Control Technology MCTC-CTB-A, User Manual, Page: 175 / 183

NICE3000 User Manual Fault diagnosis and countermeasures
175
Operate
panel
display
Digital
tube
display
Fault
description
Fault cause Disposal way Sort
Err01 E01
Invert unit
protection
1 .Main loop output is
grounding or short wiring;
2 .The connection of
traction machine is too
long;
3 .Work condition is too
hot;
4 .The connections inside
the controller become
loose;
1 .Obviate exterior
problems such as
connection;
2 .Add reactor or output
filter;
3 .Inspect the wind channel
and fan;
4 .Please contact with
agent or factory;
5
Err02 E02
Accelerated
over current
1 .Main loop output is
grounding or short wiring;
2 .If the motor has done
parameter tuning of not;
3 .Load is too heavy;
4 .encoder signal not
correct
5 .UPS feedback singal
1 .check the output side of
the inverter, whether the
run contactor is normal
2 .check the power wire
3 .check the wiring of the
motor side
4 .check the motor short or
grounded .
5 .check the FX contactor
whether caused the
inverter short
6 .check the motor
parameters whether
accord with the nameplate
7 .do the motor tuning
again
8 .check whether the brake
open before the error
occurred
9 .check for the machinica
10 .check the blance factor
11 .check the encoder
wiring
12 .check for the encoder
pulse setting
13 .check the encoder
singnal intererence
14 .check the encoder
install
15 .check whether the UPS
feedback is effective inder
the no-UPS states(E02)
16 .check the speed of
deceleration/acceleration
(E02, E03)
5
Err03 E03
Decelerated
over current
1 .Main loop output is
grounding or short wiring;
2 .If the motor has done
parameter tuning of not;
3 .Load is too heavy;
4 .Decelerate curve is too
steep;
5 .encoder signal is not
correct
5
Err04 E04
Constant
speed over
current
1 .Main loop output is
grounding or short wiring;
2 .If the motor has done
parameter tuning of not;
3 .Load is too heavy;
4 .rotary encoder
interference is too strong;
5