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Description of the signal inputs and output
L
Connect the signal inputs "Start", "Stop", "IN1" and "IN2" only with
volt-free
contacts!
Start
external analysis start
Stop
external analysis stop
Function
Type of contact
Test time
Action
Start
S
External analysis start
(e.g. from the process controller)
normally open
volt-free!
none
S
Mode of operation EXTERNAL starts
an analysis by triggering a contact at
the input
Stop
S
External analysis stop
(e.g. via flow controller or from the
process controller)
programmable
normally closed/
normally open
volt-free!
none
S
As long as the contact at the input is
'open' or 'closed', no analyses are
carried out.
M"
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BASIC PROGRAM
º
PROGRAM VALUES
º
INPUT STOP
IN1 and IN2
Universal inputs
Function
Type of contact
Test time
Action
IN1
S
External measuring point switch-over
(suppression of measuring point 2)
programmable
normally closed/
normally open
volt-free!
none
S
As long as the contact at the input is
'open' or 'closed', the analyses are
carried out by measuring point 1
IN2
S
Water meter input
normally open
volt-free!
none
S
Quantity recording to start an analysis
and for plant monitoring
"M"
º
BASIC PROGRAM
º
PROGRAM VALUES
º
INPUT IN1
OUT
Interface output (optional)
Function
Terminal
Test time
Action
Programmable interface
S
0 - 20 mA
S
4 - 20 mA
max. load
500 Ohm
-
S
Measuring value residual hardness
(measuring range 0-10 / 4-12 mA)
S
Measuring value total chlorine
(measuring range 10-20 / 12-20 mA)
Serial interface RS 232
serial bus
(2-cable-line)
-
S
See description of the plug-in circuit
card RS910
Change the function of the output by changing the plug-in circuit board.
"M"
º
BASIC PROGRAM
º
PROGRAM VALUES
º
INTERFACES
