Endress+Hauser Liquiline System CA80HA, Operating Instructions Manual

Page: 92 / 214

Operation Liquiline System CA80HA
92 Hauser
Menu/Setup/Inputs/Current input x:y
1)
Function Options Info
Meas. value format Selection
• #
• #.#
• #.##
• #.###
Factory setting
#.#
‣
Specify the number of decimal places.
Parameter name
Input variable = Parameter
Customized text, 16 characters
‣
Assign a useful name, e.g. the parameter
name that the data source also uses.
Unit of measure
Input variable = Parameter
Customized text, 16 characters You cannot choose the unit from a list. If you
want to use a unit, you must enter it here as
customized text.
Lower range value
Input variable = Parameter
-20.0 ... Upper range value
<unit of measure>
Factory setting
0.0 <engineering unit>
‣
Enter the measuring range. The lower and
upper range values are assigned to the 0 or
4 mA value and the 20 mA value
respectively. The system uses the
engineering unit which you entered
beforehand.
Upper range value
Input variable = Parameter
Lower range value to
10000.0 <engineering unit>
Factory setting
10.0 <engineering unit>
Damping 0 to 60 s
Factory setting
0 s
The damping causes a floating average curve of
the measured values over the time specified.
1) x:y = slot no. : input number
10.6 Binary inputs and outputs
Hardware options, such as the "DIO" module with 2 digital inputs and 2 digital outputs or
fieldbus module "485" enable the following:
• Via a digital input signal
• measuring range switching for conductivity (upgrade code required, →  78)
• switching between different calibration datasets in the case of optical sensors
• external hold (for sensors)
• a cleaning interval to be triggered (for sensors)
• measurements to be started, interruption of measuring intervals
• PID controller switch-on/switch-off, e.g. via the proximity switch of the CCA250
• the use of the input as an "analog input" for pulse-frequency modulation (PFM)
• Via a digital output signal
• diagnostic states, point level switches, "Active measurement" system state, "Sample
required" information or similar states transmitted statically (similar to a relay)
• the dynamic transmission (comparable to a non-wearing "analog output") of PFM signals,
e.g. to control dosing pumps