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User Constant Settings and Functions
5.5.1 Using Servo Alarm and Alarm Code Outputs
5 -68
5.5 Forming a Protective Sequence
This section describes the procedure for using I/O signals from the Servopack to form a protective
safety sequence.
5.5.1 Using Servo Alarm and Alarm Code Outputs
The basic procedure for connecting alarm output signals is described below.
Servopack
CN1-31
CN1-32
ALM+
ALM--
I/O power supply
+24 V
0 V
Photocoupler
CN1-37
CN1-38
CN1-39
ALO1
ALO2
ALO3
SG
CN1-1
0 V
0 V
Host controller
Photocoupler output
(per output )
Maximum operating voltage:
30 VDC
Maximum output current: 50 mA
DC
50 mA max.
20 mA max.
Open collector output
(per output)
Maximum operating voltage:
30 VDC
Maximum output current: 50 mA
DC
A suitable external I/O power supply must be provided by the user separately because there is
no internal 24-V power supply in the Servopack.
The use of the photocoupler output signals is described below.
Output
®
ALM+ CN1-31
Servo Alarm Output
Speed/Torque
Control,
Position Control
Output
®
ALM-- CN1-32
Signal Ground for Servo Alarm
Output
Speed/Torque
Control,
Position Control
These alarms are output when a Servopack alarm is detected.
Turns power OFF.
Alarm
detection
Servopack
ALM output
Form an external circuit so this alarm output (ALM) turns the Servopack OFF.
ON:
Circuit between CN1-31 and 32 is closed,
and CN1-31 is at low level.
Normal state
OFF:
Circuit between CN1-31 and 32 is open, and
CN1-31 is at high level.
Alarm state
5
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