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7.2 Pump pressure control
● Macro 103 "Pump pressure control"
● Differential pressure regulated by integrated PID
controller
● Flying restart and automatic restart activated
● Error message: Digital output 0
● Status display: Digital output 2
When selecting this application using macro 103, the
technological unit remains unchanged at [%]. If
necessary, adapt the unit as described in the parameter
list. Select the values depending on the used sensor.
p596 4 Reference variable of the technological unit
p0010 5 Parameter filter change, technological unit
p595 3 Selection of technological unit: bar
p0010 0 Parameter filter ready
p756[0] 0 Unipolar voltage input (0...10 V)
p0840 r722.0 ON / OFF (OFF1)
p1200[0] 1 Flying restart always active (start in setpoint direction)
p1210 26 Acknowledging all faults and restarting for an ON command
p2200[0] 1 Technology controller enable
p2201[0] 2 bar Technology controller fixed value 1
Set the pressure setpoint to suit the application. This example uses a 0 to 4 bar sensor (e.g. QBE64).
p2253[0] p2201 Technology controller setpoint 1
p2257 30s Technology controller setpoint ramp-up time
p2258 30s Technology controller setpoint ramp-down time
p2264[0] r755[0] Technology controller actual value
p2265 10 s Technology controller actual value filter time constant
p2267 4.2 bar Technology controller upper limit actual value
p2268 -1 bar Technology controller lower limit actual value
p2293 30 s Technology controller ramp-up/ramp-down time
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