Hardware Manual

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

Saia-Burgess Controls AG

PCD2.W11x

Input/output (I/O) modules

5

The 4 built-in potentiometers for setting the amplification are not accessible to the

user and must not be adjusted.

Not user

accessible

Substitution module

Basic module

Adjustment

of offset

Terminals

Basic module

Bus connector

I/O bus interface

+ 15 V

A/D converter

Adjustment of amplification

(not for users)

Digital value = 4095

Temperature = +150°C

Analogue multiplexer

Input amplifier

Adjustment of offset

Digital value = 0 --> Temperature = –50°C

Input filter

9 8 7 6 5 4 3 2 1 0 Screw terminals

• E 3 + -E 2 + -E 1 + -E 0 +

Substitution module

• 15 V

Current sources and

linearization

J 1 J 2

'ROUND )NPUT )NPUT )NPUT )NPUT

The negative terminals for each input are connected to the ground.

On this circuit board there are components that are sensitive to electrostatic

discharges. For further information, refer to Appendix B, “Icons”.