TI120 Series Variable Frequency Drive
Fault Diagnosis and Countermeasures
- 140 -
Fault code
Failure
Display
Fault name
Cause
Countermeasure
Abnormal variable frequency
drive module
Seek technical support
Large output current to floor
drain
Seek technical support
22
Er.EEP
EEPROM
read and
write Failur
Abnormal EEPROM read-write
Seek technical support
23
Er.Sci
Communicatio
n overtime
fault
Improper setting of
communication baud rate
Correct setting
Disconnected wiring at
communication port
Reconnect
The upper computer is not
working
Make the upper computer work
Communication parameter
error of variable frequency
drive
Correct setting
Large interference on site
Check peripheral equipment or seek
services
24
Er.tPA
Reaching
power-on time
Accumulative power-on time
reaches the setting value.
Seek technical support
25
Er.trA
Reaching
running time
Accumulative running time
reaches the setting value.
Seek technical support
26
Er.rEF
PID given loss
during running
PID given channel exception
Check given channel
P40.24 unreasonable
parameter setting
Correct setting
27
Er.FbL
PID feedback
loss during
running
PID feedback channel
exception
Check feedback channel
P40.26 unreasonable
parameter setting
Correct setting
28
Er.oEP
Excessive
speed bias
Small bias setting between the
motor speed and the setting
speed
Correctly set the speed bias point
Large load fluctuation
Stable load
29
Er.oSP
Motor
Small setting value of
Correctly set the speed bias point
