Saia-Burgess Controls AG
Manual I/O-modules for PCD1 │ PCD2 series │ Document 27-600 – Release ENG09 │ 2019-05-01
5-35
I/O modules PCD1|PCD2
PCD2.A200
5
LEDs and connection terminals
9
8
7
6
5
4
3
2
1
0
A0
A1
A2
A3
A0
A1
A2
A3
Bus connector
Bus interface
Relays
Contact protection
Screw terminals
Relay contacts
Supply 24 VDC for Relay coils
Output circuits and terminal designation
A0
0
1
8
9
A3
6
7
I/O Bus
PCD Bus
Contact
protection
Relay
contacts
Terminals
24 VDC Isolated contacts
Adress
LED A3
VDR = 250 VAC/400 A
R = 33 Ohm
C = 10 nF
Relay energized (contact closed):
LED on
Relay reset (contact open):
LED off
24 V
DC
must be connected to the +/- terminals.
With an open relay contact, the current leakage through the contact protection is
0.7 mA
(at 230 V / 50 Hz). This should be taken into account for smaller AC loads.
If this is too high, it is recommended to use a PCD2.A220 Module (without contact
protection).
Watchdog: This module can be used on all base addresses; there is no interac
-
tion with the watchdog on the CPUs. For details, please refer to the
section A4
“Hardware Watchdog”
, which describes the correct use of the watchdog in con-
junction with PCD components.
LED
Output
0
A0
1
A1
2
A2
3
A3