Saia-Burgess
Controls Ltd.
Hardware Manual for the PCD3 Series│Document 26/789; Version E 5│31.01.2005
Hardware
PCD3.W3x0
5-47
5
●
The reference potential for temperature measurements is the “COM”
connection on the terminal, which should not have any external earth
connection or connection to the ground (GND)
●
If screened cables are used, screening should be continued to an external
earthing bar
●
Unused temperature inputs are to be connected to the logical ground
Mixed operation
Connection concept for two-wire transducers
Two-wire transducers need a 24 VDC-supply in the measuring trunk.
8
9
E 6
6
7
E 4
4
5
E 1
2
3
E 0
0
1
E 3 E 2
E 5
E 7
C O M
Distributor
V and C
Distributor
Temp.
E1
E0
GND
PCD3.W310/340
0...20 mA
4...20 mA*
�
�
24 VDC
Gas-
pression
Tempera-
ture
Input-
filter
+
E2
*4...20 mA via userprogram