20
Alarms
10 Alarms
This driver has the alarm function to protect from temperature rise, poor connection, error in operation, and others. If an
alarm is generated, the ALM-B output will be turned OFF, and simultaneously the motor will stop and the PWR/ALM LED
will blink in red.
The generated alarm content can be checked by counting the number of times the LED blinks.
Blinking state
of LED
[Example: When LED blinks three times (sensor error)]
Unlit
Lit
Lit
Lit
Lit
Lit
Lit
1.5 s
10.1 Alarm reset
Before resetting an alarm by one of the following methods, be sure to remove the cause of the alarm and ensure safety.
•
Turn the ALM-RST input from ON to OFF. (The alarm will be reset at the OFF edge of the input.)
•
Turn on the power again.
Note
•
Some alarms cannot be reset other than turning on the power again.
Refer to "10.2 Alarm lists" on the next page.
•
Continuing the operation without removing the cause of the alarm may cause damage to equipment.
•
The driver does not accept the START/STOP input and RUN/BRAKE input until the alarm is reset.
•
Perform the ALARM-RESET input after the motor (gearhead) output shaft is stopped completely.
Turn the operation input signal OFF, and remove the cause of the alarm before resetting the alarm.
The alarm reset is disabled while the operation input signal is being ON.
ALM-B output
ALM-RST input
START/STOP input
RUN/BRAKE input
Mot
or movement
ON
ON
OFF
ON
OFF
10 ms or more
10 ms or less
CW CW
Stop
∗
Alarm generation
*
If an alarm is generated while the motor rotates, the motor will coast to a stop.
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