Saia-Burgess Controls AG
Manual Manual PCD 1 / PCD 2 Series │ Document 26 / 737 EN22 │ 2013-11-26
5
Input/output (I/O) modules
5-13
Digital input modules
Input circuits and terminal designation
Depending on external wiring, this module may be used for source or sink operation.
Source operation (positive logic):
1, 3, 5, 7
17, 19, 21, 23
9, 11, 13, 15
25, 27, 29, 31
L E1 E0
30 32
10k 10k
10k 10k
Ue 24 VDC
Ribbon cable connector
Switch closed: (+ at input): signal state "H", LED lights up
Schalter open: signal state "L", LED off
LED red
LED green
If both inputs 0 and 1 are
switched on, the yellow (orange)
LED lights up
Sink operation (negative logic):
1, 3, 5, 7
17, 19, 21, 23
9, 11, 13, 15
25, 27, 29, 31
L E1 E0
30 32
Ue 24 VDC
Ribbon cable connector
Switch closed: (- at input): signal state "L", LED off
Switch open: signal state "H", LED lights up
Watchdog: This module can interact with the watchdog; if it is used on base address
240 (or 496 for the PCD2.M17x), the last input with address 255 (or 511 for the
PCD2.M17x) cannot be used.
For details, please refer to the “Watchdog” section, which describes the correct use of
the watchdog in conjunction with PCD2 components.
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