Hardware Manual

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

Saia-Burgess Controls AG

PCD2.A400

Input/output (I/O) modules

5

LEDs and connection terminals

(^) Bus connector
Bus interface
Output transistors (MOSFET)
Protective diodes
LEDs
Screw terminals
Outputs
Load supply 24 VDC
9 8 7 6 5 4 3 2 1 0
A 7 A 6 A 5 A 4 A 3 A 2 A 1 A 0
A 0 A 2 A 4 A 6
A 1 A 3 A 5 A 7
Output circuits and terminal designation

A0
9 8 7 0
PCD BusI/O Bus
24 VDC
Fuse
A7
Output
transistors
Protective
diodes
Terminals
Loads
LED-
adress A7
Output conducting (set): LED on
Output disconnected (reset): LED off
Fuse: It is recommended that each module should be separately protected with a
fast-blow (S) 4 A fuse
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.