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15. SERVO AMPLIFIERS WITH A LARGE CAPACITY
(
30k TO 55kW
)
15.6.2 Drive unit
POINT
Explanation made in this section is exclusively for the driver unit.
Other troubleshooting is the same as that for servo amplifiers with 22kW or less.
Refer to chapter 9.
As soon as an alarm occurs, make the Servo off status and interrupt the main
circuit power.
(1) Alarms and warning list
When an error occurs during operation, the corresponding alarm or warning is displayed. If any alarm or
warning has occurred, refer to (2) or (3) in this section and take the appropriate action. When an alarm
occurs, the ALM turns OFF.
After its cause has been removed, the alarm can be deactivated in any of the methods marked in the alarm
deactivation column. The alarm is automatically canceled after removing the cause of occurrence.
Display
(Note)Alarm code
Name
Alarm deactivation Display Name
CN1
22
(bit 2)
CN1
23
(bit 2)
CN1
24
(bit 0)
Power
OFF
ON Error reset CPU reset
Alarms
AL.9C
Converter
warning
Alarms AL.1B 0 1 0
Converter
alarm
AL.E9
Main circuit off
warning
Note. 0: OFF
1: ON
(2) Remedies for alarms
CAUTION
When any alarm has occurred, eliminate its cause, ensure safety, then reset the
alarm, and restart operation. Otherwise, injury may occur.
As soon as an alarm occurs, mark servo-off and power off the main circuit and
control circuit.
POINT
The alarm can be deactivated by switching power off, then on. For details, refer
to (1) in this section.
If an alarm occurs, the trouble (ALM) turns off and alarm number is displayed in the display area.
The servo motor comes to a stop. Remove the cause of the alarm in accordance with this section. MR
Configurator may be used to refer to the cause the alarm.
Display Name Definition Cause Action
AL.1B Converter
alarm
An alarm occurred in the
converter unit during servo
on.
1. An alarm occurred in the converter
unit during servo on.
Check the alarm of the converter
unit, and take the action following
the remedies for alarms of the
converter unit. (Refer to section
15.6.1 (2).)
2. The protection coordination cable or
terminal connector is not correctly
connected.
Connect correctly.