Unitronics UMI-B1 UL Series User Manual

UMI-B1 UL Series Inverter Fault tracking
107
Fault
code
Fault type
Possible cause
Solutions
PCE
Keypad
communication
error
The keypad is not in good
connection or offline;
The keypad cable is too
long and there is strong
interference;
Part of the
communication circuits of
the keypad or main board
have fault.
Check the keypad cable
and and ensure it is
normal;
Check the environment
and eliminate the
interference source;
Change hardware and
ask for maintenance
service.
UPE
Parameter upload
error
The keypad is not in good
connection or offline;
The keypad cable is too
long and there is strong
interference;
Part of the
communication circuits of
the keypad or main board
have fault.
Check the environment
and eliminate the
interference source;
Change hardware and
ask for maintenance
service;
Change hardware and
ask for maintenance
service.
DNE
Parameter
download error
The keypad is not in good
connection or offline;
The keypad cable is too
long and there is strong
interference;
Data storage error in
keypad
Check the environment
and eliminate the
interference source;
Change hardware and
ask for maintenance
service;
Backup data in the
keypad again
ETH1
Grounding
shortcut fault 1
1. The output of the
inverter is short circuited
with the ground
2. There is fault in the
current detection circuit
3. There is a great
difference between the
actual motorpower
setting and the inverter
power
1. Check if the connection
of the motor is normal or
not
2. Change the hoare
3. Change the main
control panel
4. Reset the correctmotor
parameter
ETH2
Grounding
shortcut fault 2
LL
Electronic
underload fault
The inverter will report
the underload pre-alarm
according to the set
value.
Check the load and the
underload pre-alarm
point.

Unitronics UMI-B1 UL Series Specifications

General

Brand	Unitronics
Model	UMI-B1 UL Series
Category	Inverter
Language	English