Hardware Manual

Hardware Manual PCD 1 / PCD 2 Series│Document 26 / 737│Edition EN 15│2008-07-22

Saia-Burgess Controls AG

PCD2.A200

Input/output (I/O) modules

5

LEDs and connection terminals

Bus connector

Bus interface

Relays

Contact protection

LEDs

Screw terminals

Relay contacts

Supply 24 VDC for^

Relay coils

9 8 7 6 5 4 3 2 1 0

A 3 A 2 A 1 A 0

A 3 A 2 A 1 A 0

Output circuits and terminal designation

A0

9 8 1 0

A3

7 6

I/O Bus

PCD Bus

Contact

protection

Relay

contacts

Terminals

24 VDC Isolated contacts

Adress

LED A3

Relay energized (contact closed): LED on

Relay reset (contact open): LED off

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 interaction with the

watchdog on the CPUs. For details, please refer to the “Watchdog” section, which describes

the correct use of the watchdog in conjunction with PCD2 components.

LED Output

0 A0

1 A1

2 A2

3 A3