112
4-3-2 Alarm Output
This section describes the timing of alarm outputs when power is turned on and when
alarms occur. The method used to clear alarms is also described.
H
Timing Chart
6 ms min.
6 ms max.
Approx. 350 ms
Approx. 2 s
25 to 35 ms
Power input
(R, T)
Run command
(RUN)
Error
occurrence
Alarm reset
(RESET)
Alarm output
(ALM)
Power to
motor
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Error
H
Alarm Output Circuit
Alarm output
Output specifications: 30 VDC, 50 mA max.
Normal:
Output transistor ON
Error (alarm):
Output transistor OFF
H
Clearing Alarms
•
Any of the following methods can be used to clear alarms:
Turn ON the alarm reset signal (RESET).
Toggle the power supply.
Press the Reset Key on the Parameter Unit.
Overcurrent alarms (A.10), however, cannot be cleared by toggling the power supply.
•
Operation will start as soon as the alarm is cleared if the alarm is cleared while the Run command
(RUN) is ON, possibly creating a dangerous situation. Turn OFF the Run command before clearing
alarms. Take adequate safety precautions if an alarm is going to be cleared while the Run command is
ON or when the Servo Always ON (Cn-01, bit 0 set to 1) is used.
Application
Chapter 4
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