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