Yaskawa Σ-V Series AC Servo Drives Rotational Motor Analog Voltage Reference - Manual (Page 150)

5 Operation
5.10.1 Servo Alarm Output Signal (ALM)
5-70
5.10
Other Output Signals
This section explains other output signals.
Use these signals according to the application needs, e.g., for machine protection.
5.10.1 Servo Alarm Output Signal (ALM)
This section describes signals that are output when the SERVOPACK detects errors and resetting methods.
(1) Servo Alarm Output Signal (ALM)
This signal is output when the SERVOPACK detects an error.
(2) Alarm Reset Method
If a servo alarm (ALM) occurs, use one of the following methods to reset the alarm after eliminating the cause
of the alarm.
The /ALM-RST signal will not always reset encoder-related alarms. If an alarm cannot be reset with /ALM-
RST, cycle the control power supply.
Resetting Alarms by Turning ON the /ALM-RST Signal
Resetting Alarms Using the Digital Operator
Press the ALARM RESET Key on the digital operator. For details, refer to Σ -V Series User’s Manual, Opera-
tion of Digital Operator (Manual No.: SIEP S800000 55).
5.10.2
Warning Output Signal (/WARN)
This signal is for a warning issued before the occurrence of an alarm.
Refer to 9.2.1 List of Warnings .
Signal Specifications
Note: Use parameter Pn50F.3 to allocate the /WARN signal for use. For details, refer to 3.3.2 Output Signal Alloca-
tions .
Configure an external circuit so that this alarm output turns OFF the main circuit power
supply for the SERVOPACK whenever an error occurs.
Type
Signal
Name
Connector
Pin Number
Setting Meaning
Output ALM CN1-8
ON (closed) Normal SERVOPACK status
OFF (open) SERVOPACK alarm status
Be sure to eliminate the cause of the alarm before resetting it.
If the alarm is reset and operation continued without eliminating the cause of the alarm, it
may result in damage to the equipment or fire.
Type Signal Name
Connector Pin
Number
Meaning
Input /ALM-RST CN1-25 Alarm reset
Type
Signal
Name
Connector Pin
Number
Setting Meaning
Output /WARN Must be allocated
ON (closed) Warning status
OFF (open) Normal status