Yaskawa Sigma-5 User Manual: Design and Maintenance - Rotary Motors - Analog Voltage and Pulse Train Reference - Manual (Page 194)

5 Operation
5.10.2 Warning Output Signal (/WARN)
5-80
(3) 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 Panel Operator
Simultaneously press the UP and the DOWN Keys on the panel operator. For details, refer to 2.1.1 Names and
Functions.
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 (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 10.2.1 List of Warnings.
(1) 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 .
(2) Related Parameters
Set the output method for alarm codes in Pn001.3.
For details on alarm codes, refer to (2) Alarm Code Output Signals (ALO1, ALO2, and ALO3) of 5.10.1 Servo
Alarm Output Signal (ALM) and Alarm Code Output Signals (ALO1, ALO2, and ALO3).
For details on warning codes, refer to 10.2.1 List of Warnings.
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 Num-
ber
Meaning
Input /ALM-RST CN1-44 Alarm reset
Type
Signal
Name
Connector Pin
Number
Setting Meaning
Output /WARN Must be allocated
ON (closed) Warning status
OFF (open) Normal status
Parameter Meaning When Enabled Classification
Pn001
n.0
Outputs alarm codes alone for alarm codes ALO1,
ALO2, and ALO3.
After restart Setup
n.1
Outputs both alarm and warning codes for alarm codes
ALO1, ALO2, and ALO3, and outputs an alarm code
when an alarm occurs.