Saia-Burgess Controls AG
Manual I/O-modules for PCD1 │ PCD2 series │ Document 27-600 – Release ENG09 │ 2019-05-01
5-69
I/O modules PCD1|PCD2
PCD2.W3x0
5
Digital/analogue values
Input signals and type Digital values
PCD2.W300/W340 PCD2.W310/W340 PCD2.W340/50/60 Classic xx7 Simatic
+ 10.0 V + 20 mA Calculate the ap-
propriate values
with the formulae
at the end of this
section
4095 4095 27684
+ 5.0 V + 10 mA 2047 2047 13824
0 V 0 mA 0 0 0
Connection concept for voltage and current inputs
The voltage and current input signals are connected directly to the 10-pole
terminalblock(E0 … E7).Tominimizetheamountofinterferencecoupledintothe
module via the transmission lines, connection should be made according to the
principle explained below.
The following connection diagram shows a typical wiring layout for:
● voltageinputswiththePCD2.W300and … W340Modulesor
● currentinputswiththePCD2.W310and … W340Modules
89
E6
67
E4
45
E1
23
E0
01
E3 E2E5E7
Earthing bar
max. 20cm
COM
Distributor *)
*) potential free
● The reference potentials of signal sources should be wired to a common GND
connection (“–” and “COM” terminals). To obtain optimum measurement results,
any connection to an earthing bar should be avoided
● Ifshieldedcablesareused,theshieldshouldbecontinuedtoanexternalearthing
bar.