218
Fault code Fault type Possible fault cause Solutions
Er.TUn
Poor
auto-tuning
The nameplate parameters of the motor
are incorrect.
Set the parameters properly according to the motor
nameplate
When reverse running is prohibited,
reverse rotating auto-tuning is
performed.
Cancel the reverse running prohibition
Auto-tuning overtime
Check motor wiring
Check the P02.16 (upper limit frequency) and
see whether the P02.17 set value is lower than rated
frequency.
Er.PST
Parameter
setting error
Wrong analog AI function selection
setting
The same function shall not be selected for different
analogs simultaneously.
Process closed loop invocation setting
error
During vector control, the torque limit (P05.13，
P05.14) and frequency reference (P02.04 or PLC
section frequency reference) can not be given by
the process closed loop simultaneously.
Er.24v
Control board
24V power
short circuit
Short circuit of P24 and terminal COM
Confirm whether the wiring of P24 and COM is
correct
The interface board circuit is damaged.
Replace the interface board, seek for service
support
Er.oPT
Expansion card
fault
The expansion card is poorly inserted. Reinsert the expansion card
The expansion card is damaged. Seek for service support
Er.GdF
Grounding
short circuit
fault
One of the phases (The most likely one
is phase U) is grounding short circuited.
Check the grounding short circuit of the output three
phase and troubleshoot it.
Er.dEv
Too large
speed
deviation
(DEV) fault
ASR parameters are improper. Modify the setting of the group P05 function code
DEV deviation detection value setting is
too low.
Modify the DEV detection value setting
Heavy load fluctuation Eliminate the load vibration
Er.Fbo
PID feedback
exceeding limit
PID feedback value out of limited range
Check whether the feedback value input voltage is
normal, if normal, seek for service support
Er.oHL
Motor
over-temperatu
re
The ambient temperature is too high. Lower the ambient temperature
The motor duct is blocked. Clean the motor duct
The motor fan is damaged. Replace the motor fan
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