Yaskawa Sigma II Indexer - Manual (Page 71)

Sigma II Indexer User’s Manual Sequence I/O Signals
5-16
5.3.2 Using Servo Alarm and Alarm Code Outputs
The basic procedure for connecting alarm output signals is described below.
A suitable external I/O power supply must be provided by the user separately
because there is no internal 24V power supply in the servo amplifier.
The use of the photocoupler output signals is described below.
These alarms are output when a servo amplifier alarm is detected.
Form an external circuit so this alarm output (ALM) turns the servo amplifier OFF.
Alarm codes ALO1, ALO2 and ALO3 are output to indicate each alarm type.
The uses of open-collector output signals ALO1, ALO2 and ALO3 is described
below.
Output o ALM+ CN1-31 Servo Alarm Output
Output o ALM- CN1-32 Signal Ground for Servo Alarm Output
State Status Result
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.
Output o ALO1 CN1-37 Alarm Code Output
Output o ALO2 CN1-38 Alarm Code Output
Output o ALO3 CN1-39 Alarm Code Output
Output o SG CN1-1 Signal Ground for Alarm Code Output
Servo amplifier
CN1-3
1
CN1-32
ALM+
ALM-
I/O power supply
+24V 0V
Photocoupler
CN1-37
CN1-38
CN1-39
ALO1
ALO2
ALO3
SG CN1-1
0V 0 V
Host controller
50mA max.
20mA max.
Open-collector output lev-
els per output node:
• Maximum operating
voltage: 30V
DC
• Maximum output cur-
rent: 20mA
DC
Photocoupler output levels
per output node:
• Maximum operating volt-
age: 30V
DC
• Maximum output current:
50mA
DC
1
Turns power OFF.
Alarm
detection
Servo amplifier
ALM output
Turns power OFF