APPLICATIONS OF Σ-SERIES PRODUCTS
3.7.1 Using Servo Alarm Output and Alarm Code Outputcont.
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2) Contact Output Signal ALM
Output → ALM 1CN-34
Servo Alarm Output For Speed Torque
Control and
Position Control
Output → ALM-SG 1CN-35
Signal Ground for Servo
Alarm Output
For Speed Torque
Control and
Position Control
Signal ALM is output when the Servopack detects
an alarm.
Form an external circuit so that this alarm output
(ALM) turns the Servopack OFF.
ON
status:
Circuit between 1CN-34 and 1CN-35 is closed.
1CN-34 is at low level.
Normal state
OFF
status:
Circuit between 1CN-34 and 1CN-35 is open.
1CN-34 is at high level.
Alarm state
Alarm codes ALO1, ALO2, and ALO3 are output to indicate each alarm type.
3) Contact Output Signals ALO1, ALO2, and ALO3
Output → ALO1 1CN-30
Alarm Code Output For Speed/Torque
Control and
Position Control
Output → ALO2 1CN-31
Alarm Code Output For Speed/Torque
Control and
Position Control
Output → ALO3 1CN-32
Alarm Code Output For Speed/Torque
Control and
Position Control
Output → SG-AL 1CN-33
Signal Ground for Alarm Code
Output
For Speed/Torque
Control and
Position Control
These signals output an alarm code to indicate the type of alarm detected by the Servo-
pack.
Use these signals to display alarm codes at the host controller.
NOTE Using Alarm Codes:
When an alarm is detected, alarm output (ALM) causes the external circuit to turn the
SGDA Servopack OFF. The alarm code remains output for at least 100 ms. For this rea-
son, the host controller must read the alarm code within 100 ms of the alarm occurrence.
When an alarm signal is output, be sure to identify the cause of the problem, take correc-
tive action and operate again. For trouble shooting problems and procedures, refer to 6.2
Troubleshooting.
3
Turns the power
OFF
ALM output
Alarm
detection
Servopack