Heyl Testomat 2000 - Installation Procedures (Continued); Connecting Input and Output Signals

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)