User`s guide

26 • Signal Connections
3.7 Alarm Signal ALM
The alarm signal ALM is used to indicate the alarm status from the servo
driver. The relative signal name, pin number and axis number are shown in
the following table.
CN2 Pin No Signal Name
Axis #
9 ALM1 •
27 ALM2 ‚
59 ALM3 ƒ
77 ALM4 „
The input circuit of alarm circuit is shown in the following diagram. The ALM
signals are usually from servomotor drivers, which usually provide open
collector output signals. The external circuit must provide at least 5 mA
current sink capability to drive the ALM signal active. For more details of
the ALM operation, please refer to section 4.2.2.
EX+5V
I
f
=12mA Max.
I
f
=5mA Min.
To PCL5023
ALM
R
Inside PCI-8134
CN2