Endress+Hauser ControlCare SFC162, Руководство по эксплуатации

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ControlCare Field Controller: Commissioning and Configuration 5 Configuring the Field Controller
Hauser 37
5.3.5 Pulse Input block
The Pulse Input Block provides analog output values based on a pulse (counter) transducer input.
Two primary outputs are available:
• OUT provides an analog rate based on the number of pulses counted per block execution.
It is characterized by PULSE_VAL and TIME_UNITS and the engineering units are selected
by scaling the output: the resulting range can be alarmed.
• OUT_ACCUM is the accumulated number of pulses and is intended to be connected to an
integrator block for differencing, conversion, and integration. It is used when the count rate is
low relative to the block execution rate. The counter is reset by putting the block into MAN
mode and entering a new value for OUT_ACCUM.
More detailed information is to be found in the Function Block manual BA022S/04/en.
Fig. 5-4 Schematic diagram of Pulse Input block
Procedure 1 In the fieldbus view, right click on the Pulse Input block Device Tag-PUL-n and select
Off Line Characterization . The Characterization dialog opens.
– Press the ALL button in the toolbar to display all parameters
2 Expand the MODE_BLK node and set the Target Mode to Auto
– Select the Target node then click the Edit button
– Select Auto from the drop-down menu, click End Edit to confirm the selection
– Click Close to leave the dialog.
3 If you are using the OUT parameter, set the conversion parameters:
– Select PULSE_VAL , click Edit , enter the engineering quantity associated with one pulse,
the click End Edit
– Select TIME_UNITS, click Edit , select the units from the drop-down menu,
then click End Edit
– Expand OUT_SCALE and enter EU_100, EU_0, UNITS _INDEX (Engineering units)
and DECIMAL, clicking Edit to change and End Edit to accept parameters.
– For a damped output use the PV_FTIME parameter
– Select the PV_FTIME parameter and click on Edit
– Enter the delay time (s) then click on End Edit .
4 Set CHANNEL to the input connected to the block as defiined in Section 5.3.1
– Select CHANNEL , then click the Edit button
– Enter the CHANNEL value (Rack+Slot+Group+Point)
– Click on End Edit
5 If required, set an alarm in the ALARM parameter set, see BA022S/04/en
6 Repeat the process for all inputs to PULSE blocks
OUT
CHANNEL
(RRSGP)
SIMULATE CONVERTION CONDITIONING
PV_FTIME
MAN
ALARM
PROCESSING
PULSE_VAL
TIME_UNITS
AUTO
OUT_ACCUM
MAN
AUTO
From modules
SFC441
SFC442
SFC467