Description Of The Signal Inputs/Outputs - Heyl Testomat 2000 PO4 Manual De Instrucciones

!
CAUTION
Start
terminals 20,21
Stop
terminals 22,23
>FUNCTION STOP ▼▲ ME
NORMALLY OPEN CONTACT
Normally closed contact *
36
Description of the signal
inputs/outputs
Connecting the signal inputs
 Only connect the signal inputs "Start", "Stop", "IN1" and "IN2" with
volt-free contacts!
The connection of external voltages would damage the instrument!
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
>BASIC PROGRAM
=> =>
PROGRAM VALUES
 Select the type of contact
 Press "ENTER" to confirm the selection

Description of the signal inputs/outputs

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
FUNCTION STOP