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Saia-Burgess Controls AG
Manual
Manual PCD 1 / PCD 2 Series
│ Document 26
/
737 E
N22 │ 2013-11-26
5
Input/output (I/O) modules
5-45
Digital combined input and output modules
Input/output circuits and terminal designation
E/A5 E/A4 E/A3 E/A2 E1 E0
A6
A7
E1
E4
A4
A7
A6
E3
A3
A5
E0
E5
E3
A2
E2
I/O Bus
PCD Bus
24 VDC
Fuse
The example shows E/A2 and E/A3 used as inputs and
E/A4 and E/A5 used as outputs
The following applies for the inputs:
Switch closed (input positive):
Signal state = “1” = LED on
Switch open:
Signal state = “0” = LED off
Fuse:
It is recommended that each module should be separately protected with a
fast-blow 3.15 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.