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8. TROUBLESHOOTING
8. TROUBLESHOOTING
When an error occurs during operation, the corresponding alarm or warning is displayed. If an alarm or
warning is displayed, refer to section 8.4, and "MELSERVO-J4 Servo Amplifier Instruction Manual
(Troubleshooting)" to remove the failure. When an alarm occurs, ALM (Malfunction) will turn off.
8.1 Explanations of the lists
(1) No./Name/Detail No./Detail name
Indicates the alarm or warning No., name, detail No., and detail name.
(2) Stop method
For the alarms and warnings in which "SD" is written in the stop method column, the servo motor stops
with the dynamic brake after forced stop deceleration. For the alarms and warnings in which "DB" or
"EDB" is written in the stop method column, the servo motor stops with the dynamic brake without forced
stop deceleration.
(3) Alarm deactivation
After the alarm cause has been removed, the alarm can be deactivated in any of the methods marked ○
in the alarm deactivation column. Warnings are automatically canceled after the cause of occurrence is
removed. Alarms are deactivated by alarm reset, communication reset (network), or power cycling.
Alarm deactivation
Alarm reset
Communication reset (Network)
Cycling the power
POINT
This chapter explains the details of alarms and warnings exclusively for the MR-
J4-_TM_. For any other alarms and warnings, refer to [GF] and [Others] in the
MELSERVO-J4 Servo Amplifier Instruction Manual (Troubleshooting).
As soon as an alarm occurs, make the servo-off status and interrupt the main
circuit power.
[AL. 37 Parameter error] and warnings (except [AL. F0 Tough drive warning])
are not recorded in the alarm history.
1. Error reset command from the controller
2. Click "Occurring Alarm Reset" in the "Alarm Display" window of MR
Configurator2.
1. Disconnect the computer from the network, and connect it again.
For details of the disconnection methods, refer to the MR-J4-_TM_ Servo
Amplifier Instruction Manual for each communication method.
2. After the network communication from the controller has been shifted to the initial
state, connect it again.
Turning off the power and on again
Explanation
8 - 1
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