Hardware Manual

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

Saia-Burgess Controls AG

PCD2.W3x0

Input/output (I/O) modules

5

Connection concept for temperature sensors

The input signals for the temperature sensors are connected directly to the 10-pole

terminal block (E0 ... E7).

The following connection diagram shows a typical layout for tempera-

ture sensors with the PCD2.W340, ... W350 and ... W360 Modules.

9 8

E6

7 6

E4

5 4

E1

3 2

E0

1 0

E7 E5 E3 E2

Earthing bar

max. 20 cm

COM

Distributor *)

*) potential free

● The reference potential for temperature measurements is the “COM” terminal,

which should not have any external earth or GND connection.

● 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

9 8

E6

7 6

E4

5 4

E1

3 2

E0

1 0

COM E7 E5 E3 E2

Distributor

V and C

Distributor

Temp.