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Saia-Burgess Controls AG
LEDs and connection terminals
A3
A2
9
8
7
A3
Output circuits and terminal designation
Adress-
LED A3
LED
0
1
2
3
Relay energized (contact open):
Relay reset (contact closed):
24 V
must be connected to the +/- terminals.
DC
Watchdog: This module can be used on all base addresses; there is no interaction with the
watchdog on the CPUs. For details, please refer to the
the correct use of the watchdog in conjunction with PCD2 components.
Manual Manual PCD 1 / PCD 2 Series │ D ocument 26 / 737 EN22 │ 2 013-11-26
A0
A1
6
5
4
3
2
1
0
A2
A1
A0
Output
A0
9
8
A1
A2
24 VDC
A3
Digital output modules, electrically isolated
Bus
Bus interface
Relay
Contact protection
LED
Screw terminals
Relay contacts A0 to A3
Supply 24 V
for Relay coils
DC
7
6
1
A3
A0
Isolated contacts
LED on
LED off
"Watchdog"
Input/output (I/O) modules
Contact
protection
Relay
contacts
0
Terminals
section, which describes
5
5-35
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