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8. Troubleshooting
8.1 Alarms and warning list
POINT
As soon as an alarm occurs, turn off Servo-on (SON) and power off.
When a fault occurs during operation, the corresponding alarm or warning is displayed. If any alarm or warning has
occurred, refer to
“LECSB Operation Manual”,section 9.2 or 9.3 and take the appropriate action. When an alarm occurs,
ALM turns off.
Set "
1" in parameter No.PD24 to output the alarm code, it is outputted by ON/OFF of bit0 to bit2. Warnings (AL.92
to AL.EA) have no alarm codes. Any alarm code is output at the occurrence of the corresponding alarm. In the normal
status, the alarm code is not output.
After its cause has been removed, the alarm can be deactivated by any of the methods marked
in the alarm
deactivation column.
(Note 2)
Alarm deactivation
Display
Name
Alarm code
W
a
rn
ing
s
AL.92
Battery cable
Power
OFF
ON
Press
disconnection warning
Display CN1 CN1 CN1
Name
"SET" on Alarm
AL.96
Home position setting
22
23
24
current
reset
error
(bit2) (bit1) (bit0)
alarm
(RES)
AL.99 Stroke limit warning
screen.
AL.9F Battery warning
A
lar
m
s
AL.10
0
1
0
Undervoltage
AL.E0
Excessive regeneration
AL.12
0
0
0
Memory error 1 (RAM)
warning
AL.13
0
0
0
Clock error
AL.E1 Overload warning 1
AL.15
0
0
0
Memory error 2 (EEP-ROM)
AL.E3
Absolute position counter
AL.16
1
1
0
Encoder error 1
warning
(At power on)
AL.E5 ABS time-out warning
AL.17
0
0
0
Board error
AL.E6
Servo emergency stop
AL.19
0
0
0
Memory error 3
warning
(Flash-ROM)
AL.E8
Cooling fan speed
AL.1A
1
1
0
Motor combination error
reduction warning
AL.20
1
1
0
Encoder error 2
AL.E9 Main circuit off warning
(during runtime)
AL.EA ABS servo on warning
AL.21
1
1
0
Encoder error 3
AL.EC Overload warning 2
(during runtime)
AL.ED
Output watt excess
AL.24
1
0
0
Main circuit error
warning
AL.25
1
1
0
Absolute position erase
AL.30
0
0
1
Regenerative error
(Note 1)
(Note 1)
(Note 1)
AL.31
1
0
1
Overspeed
AL.32
1
0
0
Overcurrent
AL.33
0
0
1
Overvoltage
AL.35
1
0
1
Command pulse frequency
alarm
AL.37
0
0
0
Parameter error
AL.45
0
1
1
Main circuit device overheat
(Note 1)
(Note 1)
(Note 1)
AL.46
0
1
1
Servo motor overheat
(Note 1)
(Note 1)
(Note 1)
AL.47
0
1
1
Cooling fan alarm
AL.50
0
1
1
Overload 1
(Note 1)
(Note 1)
(Note 1)
AL.51
0
1
1
Overload 2
(Note 1)
(Note 1)
(Note 1)
AL.52
1
0
1
Error excessive
AL.8A
0
0
0
Serial
communication
time-out
AL.8E
0
0
0
Serial communication error
88888
Watchdog
Note 1. Deactivate the alarm about 30 minutes of cooling time after removing the cause of occurrence.
2. 0: off
1: on