Pressure-controlled pump with cascade
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7.11 Pressure-controlled pump with cascade
p0730 r2379.0 Signal source for digital output 0: Control external motor 1 via DO 0
p0731 r2379.1 Signal source for digital output 1: Control external motor 2 via DO 1
p0732 r2379.2 Signal source for digital output 2: Control external motor 3 via DO 2
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] 50% 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 120% Technology controller upper limit actual value
p2268 -20% Technology controller lower limit actual value
p2293 30 s Technology controller ramp-up/ramp-down time
p2370 1 Activate closed-loop cascade control
p2371 4 Configuration and motor connection sequence: 3 motors with identical power output
p2372 1 Motor selection mode: When a motor is connected, the motor with the least operating hours is
connected. When a motor is disconnected, the motor with the most operating hours is shut down.
p2373 20 % Switch-in threshold
p2374 30 s Delay time for connection of external motors
p2375 30 s Delay time for disconnection of external motors
p2376 25 % Overcontrol threshold
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