3. SIGNALS AND WIRING
3 - 17
3.6 Alarm occurrence timing chart
CAUTION
When an alarm has occurred, remove its cause, make sure that the operation signal
is not being input, ensure safety, and reset the alarm before restarting operation.
Shut off the main circuit power supply when alarms are occurring in both of the A-
axis and the B-axis. Otherwise, a regenerative transistor fault or the like may
overheat the regenerative resistor, causing a fire.
When an alarm occurs in the servo amplifier, the base circuit is shut off and the servo motor is coated to a stop.
Switch off the main circuit power supply in the external sequence. To deactivate the alarm, power the control
circuit off, then on or give the error reset or CPU reset command from the servo system controller. However, the
alarm cannot be deactivated unless its cause is removed.
3.6.1 Timing chart
(1) Occurrence of all axis stop alarm
50ms or
more
Base circuit
Dynamic brake
Servo-on command
(from controller)
B-axis
Alarm
Reset command
1.5s
Power ON
Power ON
Base circuit ON
Base circuit ON
Base circuit ON
Base circuit ON
Brake operation
Brake operation
Brake operation
Servo-on command
Servo-on command
Occurrence of all axis stop alarm
Occurrence of all axis stop alarm
No alarm
Reset operation
Reset operation
Power on
Power shutoff
Power on
Occurrence of all
axis stop alarm
Alarm reset
Alarm reset
Fault cause
removed
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Base circuit
Dynamic brake
Servo-on command
(from controller)
A-axis
Alarm
Reset command
Servo-on command
Occurrence of all axis stop alarm
50ms or
more
60ms or
more
No alarm
No alarm
No alarm
No alarm
No alarm
No alarm
No alarm
Main circuit
Control circuit
power
Base circuit ON
Base circuit ON
Base circuit ON
Base circuit ON
Brake operation
Brake operation
Brake operation
Servo-on command
Servo-on command
Servo-on command
Occurrence of all axis stop alarm
Occurrence of all axis stop alarm
Occurrence of all axis stop alarm
Fault cause
removed
Occurrence of all
axis stop alarm
Summary of Contents for MELSERVO-J3W Series
Page 17: ...8 MEMO ...
Page 27: ...1 FUNCTIONS AND CONFIGURATION 1 10 MEMO ...
Page 87: ...4 STARTUP 4 14 MEMO ...
Page 117: ...5 PARAMETERS 5 30 MEMO ...
Page 129: ...6 GENERAL GAIN ADJUSTMENT 6 12 MEMO ...
Page 185: ...10 CHARACTERISTICS 10 8 MEMO ...
Page 241: ...11 OPTIONS AND AUXILIARY EQUIPMENT 11 56 MEMO ...
Page 274: ...13 USING A LINEAR SERVO MOTOR 13 25 1 2 3 4 ...