Hardware Manual

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

Saia-Burgess Controls AG

PCD2.E165/166

Input/output (I/O) modules

5

For every 2 inputs, a 3-colour LED is fitted:

Colour E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 E10 E11 E12 E13 E14 E15

off L L L L L L L L L L L L L L L L

red H L H L H L H L H L H L H L H L

green L H L H L H L H L H L H L H L H

yellow H H H H H H H H H H H H H H H H

Input circuits and terminal designation

Depending on external wiring, this module may be used for source or sink operation.

Source operation (positive logic):

E 1 E 0

10 k 10 k

10 k 10 k

LED red

LED green

Ue 24 VDC

L L Screwless terminals

If both inputs 0 and 1 are

switched on, the yellow (orange)

LED lights up

Switch closed (+ at input): signal state "H", LED lights up

Switch open: signal state "L", LED off

Sink operation (negative logic):

E 1 E 0

Ue 24 VDC

L L Screwless terminals

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.