Installation
15
Connecting the inputs and outputs
Testomat 2000
®
Polymer
has the following connections for control
and monitoring functions.
Do not connect an external voltage to these connections!
Ensure that the leads are held securely in the terminals.
Use the two fastening screws to close the upper door once
installation has been completed.
For more information, please refer to the section entitled "Description
of the signal inputs/outputs".
No.
Terminal
Type
Function
Comment
20
21
Start
IN
External analysis start
common earth for inputs
Only connect isolated
normally open contact!
22
23
Stop
IN
External analysis stop
common earth for inputs
Only connect isolated
normally closed/open
contact!
24
25
IN1
IN
Universal input 1
common earth for inputs
Only connect isolated
normally closed/open
contact!
26
27
IN2
IN
Universal input 2 (water meter)
common earth for inputs
Only connect isolated
normally open contact!
┴
28
29
OUT
OUT
Earth
0/4 - 20 mA galvanically separated
or serial interface RS232
Earth =
┴
28 = (+) or (TxD)
29 = (-) or (RxD)