SBC PCD2 Series - Page 44

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
A0A1A2A3
A0A1A2A3
Bus connector
Bus interface
Relays
Contact protection
Screw terminals
Relay contacts
Supply 24 VDC for Relay coils
Output circuits and terminal designation
A0
0189
A3
67
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o󰀨
24 VDC 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