User Manual
EM303B General Purpose Inverter
166
Trip
Code
Trip
Cause
Corrective Action
SrE
Stator Resistance
Error
1. Motor is not connected to
the output terminals of
inverter.
2. Motor is on load.
3. Motor fails.
1. Check connection between
inverter and motor.
2. Motor is offloaded.
3. Check motor.
SIE
Idling Current Error
EST
PID Feedback
Loss/SPI Fault/SCI
Fault
1. PID feedback loses.
2. Analog terminal of PID
feedback is broken down.
3. PID feedback detection
time is too short, fault is
caused by interference.
4. Internal SPI
communication fault.
5. SCI communication fault.
1. Check the cable between
PID feedback sensor and
analog terminal.
2. Check if the analog
terminal is broken.
3. Increase the value of
F4-31.
4. Power-on the inverter again
after power failure.
5. Adjust F1-30
communication overtime.
OlP
Output Phase Loss
1. The motor is not connected
to the output terminal of
inverter.
2. Motor vibrates severely,
and 3-phase current is in
serious imbalance.
1. Check connection between
inverter and motor.
2. Check if the motor is
damaged.
When inverter trips faults as stated above, press
STOP
RESET
or use reset terminal to clear fault. If the
fault is cleared, inverter will return the function setting status. Otherwise, the trip code will be
displayed on LED continuously.
When faults trip in operation, if fault retry (set by FC-24) is enabled, the inverter will reset
fault automatically and try to run after certain setting interval time (set by FC-25). FC-24 sets
the retry times of fault reset. If the fault times exceeds the setting value of FC-26(No fault
time-lag), the inverter stops retry and keeps in fault status.
Reference of LED Characters
LED Characters and the Corresponding English Characters
a
b
C
D
E
F
G
H
I
l
A
B
C
D
E
F
G
H
I
L
N
O
p
q
r
s
t
U
H
y
N
O
P
Q
R
S
T
U
X
Y
LED numbers and the Corresponding English numbers
1
2
3
4
5
6
7
8
9
0
1
2
3
4
5
6
7
8
9
0
