The PC 441 is a monitor and controller for one to four pumps, designed mainly for use in municipal wastewater pumping stations. The PC 441 has many advanced features to minimize operating costs and increase the availability of the pumping station throughout its life cycle.
Connects to a CA 511 graphical display to provide a full user interface for viewing and setting all parameters
Minimizes operating costs and increases pumping station availability
Connects to any Supervisory Control and Data Acquisition (SCADA) or telemetry system supporting the Modbus or Comli communication protocols
Main applications
Monitoring and controlling municipal wastewater pumping stations
Viewing alarms, manually controlling pumps, and changing settings, either locally via the graphical user interface or using the AquaProg software
AquaProg software can be used for backing up the controller settings on the hard disk and also for downloading alarms, events and historical data
Advanced features
Users can operate the PC 441 as a standalone monitoring unit. Alternatively they can run the AquaProg configuration software on a PC connected directly to the local service port or remotely, such as via modem. Settings are password-protected at two levels in order to avoid unauthorized or accidental changes.
Five additional units can be connected for more advanced monitoring:
CA 441: Moisture monitoring unit for connecting four pumps with combined alarms or three separate alarms using one unit per pump
CA 442: Temperature monitoring unit for connecting four pumps with combined alarms or four separate alarms using one unit per pump and a separate mA input for a vibration sensor
CA 443: Electrical supply and consumption monitoring, as well as measuring device for a complete station and/or one per pump
CA 622: Communication unit for sending and receiving information to peripheral products via RS 485 Modbus interface
CA 781: Expansion unit for connecting an extended number of pumps
The PC 441 offers two possibilities for level sensing:
Connection of hydrostatic or other devices with 4 to 20 mA signal
Float switches
Main design features
Pump start/stop based on:
Level set point, random start level, speed of level change, tariff control, alternative stop level, remote communication, pump stop after max. runtime setting, cyclic pump motion timer
Pump alternation: normal or asymmetrical
Pump run confirmation via motor current or contactor feedback
Emergency pump run timer on high float
Overflow calculation and monitoring
Pulse frequency to analog, value conversion (energy/rain/flow inputs)
Alarm dial-up
GSM/SMS alarms
GPRS modem support
Modbus and Comli communication protocols
Analog data logger: 16 channels, 1–60 minutes/sample. Values measured: Level, motor current on P1/P4, inflow/outflow, pressure, motor, bearing
Temperature (Pt 100) on P1/P4, calculated energy/rain/flow
Digital Data logger: P1/P4 on/off, alarms on/off/acknowledged
Real Time (RT) clock for date and time, with 6 h internal backup
Inflow calculation
Outflow calculation
Pump capacity calculation and alarm
Personnel alarm
Auto pump reversal
Pump exercising (forced start)
Auto reset motor protector
Key characteristics
Advanced monitoring of one to four pumps
Advanced control of one to four pumps
Communication via GPRS, GSM, telemodem or cable
Logging of analog signals, digital signals and alarms
Level sensing by 4-20 mA sensor of float switches
Mixer and flush valve control
Advanced pump capacity and outflow calculation with alarm handling
GRAPHICAL OPERATOR INTERFACE TYPE ABS CA 511
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