Operation Liquiline System CA80SI
74 Endress+Hauser
The following information is processed at the binary inputs or output at the binary
outputs:
• Binary inputs:
Signal for process access: The analyzer can only perform activities that require sample
(measurement, calibration, cleaning) when the signal is active. The time and the
sequence of activities correspond to the settings in the setup. All activities that require
sample are delayed as long as the signal is inactive.
• Binary outputs:
– Signal Measurement active: Indicates that a measurement is currently running. The
signal is not active in the event of a calibration or cleaning.
– Signal Sample required: The signal is active for a configurable time before every
activity that requires sample. This makes it possible to activate an external pump or a
dilution module, for example.
1. Menu/Setup/Inputs/Binary input Select x:y.
2. Configure the binary inputs as follows:
Menu/Setup/Inputs/Binary input x:y
1)
Function Options Info
Binary input Selection
On
Signal type Selection
Static signal
Signal level Selection
• High
• Low
Specifies the active signal level:
Low
Input signals between 0 and 5 V DC
High
Input signals between 11 and 30 V DC
1) x:y = slot no. : input number
3. Link the binary inputs with the analyzer:Menu/Setup/Analyzer/Extended setup/
Signal for process access select .
4. Select measuring channel SP1.
5. Assign a binary input to the selected measuring channel: Binary input select x:y.
Controlling the measurement start time via an external signal
You can temporarily interrupt the automatic operation of the analyzer via an external
signal at the "DIO" module. You can also use this signal to specifically start individual
measurements. In this way, you can specify the time of the measurements using your
external control system.
For this, connect the Signal for process access to a binary input of the "DIO" module and
set the starting time of the measurements to Continuous . A measurement starts
immediately as soon as the signal at the binary input is active. The only exception is if a
calibration or cleaning is due on the basis of the set time intervals: in this case, these
activities are performed first of all and then the measurement follows immediately
afterwards. If necessary, connect the signal Measurement active to a binary output to
identify when the measurement actually begins. If you do not want any more
measurements after the end of the first measurement, you have to deactivate the Signal
for process access while the measurement is still running.
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