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Description of the signal inputs/outputs
!
CAUTION
Start
terminals 20,21
Stop
terminals 22,23
▼▲
36
Description of the signal
inputs/outputs
Connecting the signal inputs/outputs
Connection of an external power supply can result in personal injuries
and damage to the instrument!
Only connect the signal inputs "Start", "Stop", "IN1" and "IN2" to
volt-free contacts!
Function
Start
External analysis
start (only normally open)
Function
Stop
External analysis stop (e.g.
via flow controller or
process controller)
An active Stop input prevents an analysis start, e.g. via a current
interval. This can be necessary if the plant does not supply water. A
current analysis is stopped when the input valve is opened (while the
measuring chamber is being flushed or filled). The water which has
already entered the measuring chamber remains there. If the
measuring chamber is already full, the analysis is executed. Manual
start has priority over the Stop input, i.e. if the Stop input is active, an
analysis can be started manually or a manually started analysis
cannot be stopped by the stop signal. In the operating mode "time-
controlled", the interval time continues when the Stop input has been
activated.
In
=>
Select the type of contact
Press "ENTER" to confirm the selection
Test
Action
period
None
In the operating mode
EXTERNAL, an impulse
contact at the input starts an
individual analysis, while
with permanent contact one
analysis after the other is
run.
Test
Action
period
None
There are no analyses while
the contact at the input is
open or closed
, select
=>
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