User manual

15 Alarms and warnings
−128−
 Descriptions of alarms
Alarm code output
Alarm type
Number of times
the ALARM LED
blinks
AL2 AL1 AL0
Alarm code
Motor operation
upon alarm
∗
Reset using the
ALM-RST input/
OPX-2A/MEXE02
Overheat protection
21 × Possible
Motor overheat protection
26 × Not possible
Overload
30 × Possible
Overspeed
31 × Possible
Command pulse error
34 × Possible
Regeneration unit overheat
2 OFF ON OFF
51 × Not possible
Overvoltage protection
22 × Not possible
Main power supply error 23 × Possible
Undervoltage
3 OFF ON ON
25 × Possible
Excessive position
deviation
4 ON OFF OFF 10 × Possible
Overcurrent protection
5 ON OFF ON 20 × Not possible
∗ The symbols in the “Motor operation upon alarm” field are explained below.
×: When an alarm generates, the motor current will be cut off and the motor will lose its holding torque.
In the case of an electromagnetic brake motor, the motor will become unexcited and the electromagnetic
brake will hold the load automatically.
: Even when an alarm generates, the motor current will not be cut off and the motor position will be held.