Chapter 6: Troubleshooting
ES2 Series Servo User Manual Lite V1.0
Fault
number
Er_
22
27
28
30
Fault name
Cause of fault
Stop method
when fault
occurs
Overspeed
DI
terminal
parameter setting
fault
1. Speed command exceeds the
maximum speed value
2. UVW phase sequence error
3. Speed response too high,
severely exceed adjustment range
4. Drive failure
Different DI are assigned with same
function repeatedly;
No.1
No.1
DO
terminal
parameter setting
fault
Different DO are assigned with
same output
No.1
Reference position
failure
Reference position failure
No.1
Whether
the fault
can be
reset
Yes
Yes
Yes
Yes
6.1.3 Resettable NO.2 fault
Fault
number
Er_
43
44
46
47
49
50
Fault name
Cause of fault
Stop method
when fault
occurs
Position deviation
is too large
Main circuit input
phase lack
Drive overload
Motor overload
Electronic gear
setting error
Heat sink (fan)
overheating
In the servo ON state, the position
deviation exceeds the position
deviation value (P09.09)
When lack power input phase, the
protection selects parameter P09-
00=0 (enable fault, disable warning)
or P09-00=1 (enable fault and
warning):
1. Three-phase input line is poorly
connected
2. Three-phase drive operates under
single-phase power
The load operation exceeds the
inverse time curve of the drive;
The UVW output may be lack of
phase or phase sequence connected
incorrectly;
The load operation exceeds the
inverse time curve of the motor;
The UVW output may be lack of
phase or phase sequence connected
incorrectly;
Electronic gear ratio exceeds
specification range [0.001, 4000]
Servo unit heat sink (fan) exceeds
the set fault value
No.2
No.2
No.2
N0.2
No.2
No.2
Whether
the fault
can be
reset
Yes
Yes
Yes
Yes
Yes
Yes
6.2 Reasons for warning and treatment
Fault
number Er_
Warning name
81
Drive overload warning
Cause of fault
Warning when 80% of the drive overload limit value is
reached
37