SBC PCD2.M120 - Page 205

Saia-Burgess Controls AG
Manual Manual PCD 1 / PCD 2 Series │ Document 26 / 737 EN22 │ 2013-11-26
5
Input/output (I/O) modules
5-69
Analogue input modules
Connection concept for two-wire transducers
E1
E0
GND
PCD2.W310/340
0...20 mA
4...20 mA*
ρ
ϑ
24 VDC
Pressure
Tempera-
ture
Input filter
+
E2
*4...20 mA over user program
Two-wire transducers need a 24 VDC-supply in the measuring trunk.
Block diagram
E0
E1
E2
E3
E4
E5
E6
E7
GND
R
source
Voltage
Source
10.000V
Ref.
Voltage
2.500V
Input filter and amplifier
MUX
A
D
Data
I/O Bus
PCD Bus
+5V
GND
/IOOUIT
IODIN
/IOWRITE
IODOUT
I/MS0
IOA0
IOA1
IOA2
IOA3
W340, W350, W360 only
Programming
Classic: Programming examples for the PCD2.W3x0 can be found in a separate man-
ual and on the TCS Support site (www.sbc-support.com + getting started).
xx7: the rmware reads in the values according to the conguration (I/O Builder)
Watchdog: This module cannot be used on the base address 240 (or 496 for the
PCD2.M17x), because it would interact with the watchdog, and would cause a
malfunction.
For details, please refer to the “Watchdog” section, which describes the correct use of
the watchdog in conjunction with PCD2 components.