Hydro MPC-F 4 CRI 20-5
Pressure booster system supplied as compact assembly according to DIN standard 1988/T5.
The pumps are CR(I) pumps connected to one external Grundfos CUE frequency converter. The speed-controlled operation alternates between the pumps.
- Hydro MPC-F maintains a constant pressure through continuous adjustment of the speed of the pump connected to the CUE frequency converter.
- The system performance is adapted to the demand through cutting in/out the required number of CR(I) pumps and through parallel control of the pumps in operation.
- Pump changeover is automatic and depends on load, time and fault.
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The system consists of these parts:
:vertical multistage centrifugal pumps, type CRI 20-5 with one external frequency converter.
- One pump is frequency-converter controlled; the others are mains-operated (start/stop)
- CRI pump parts in contact with the pumped liquid are made of stainless steel.
- CR pump bases and heads are of cast iron; other vital parts are made of stainless steel.
- Pump bases and heads are of either cast iron/stainless steel (CRI) or cast iron EN-GJS-500-7 (CR), depending on pump type; other vital parts are made of stainless steel EN DIN 1.4301.
- The pumps are equipped with a service-friendly cartridge shaft seal, HQQE (SiC/SiC/EPDM).
- Two manifolds of stainless steel EN DIN 1.4571.
- Base frame of stainless steel EN DIN 1.4301 up to CR 64. Above CR 64 the pumps are placed on a galvanized C-profile frame.
- One non-return valve (POM) and two isolating valves for each pump.
- Non-return valves are certified according to DVGW, isolating valves according to DIN and DVGW.
- Adapter with isolating valve for connection of diaphragm tank.
- Pressure gauge and pressure transmitter (analog output 4-20 mA).
- Control MPC in a steel cabinet, IP 54, including main switch, all required fuses, motor protection, switching equipment and microprocessor-controlled CU 352.
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Dry-running protection and diaphragm tank are available according to the list of accessories.
Pump operation is controlled by Control MPC with the following functions:
- Intelligent multipump controller, CU 352.
- Constant-pressure control through continuously variable adjustment of the speed of each individual pump.
- PID controller with adjustable PI parameters (Kp + Ti).
- Constant pressure at setpoint, independent of inlet pressure.
- Soft pressure build-up (To prevent water hammer during startup).
- On/off operation at low flow.
- Automatic cascade control of pumps for optimum efficiency.
- Selection of min. time between start/stop, automatic pump changeover and pump priority.
- Automatic pump test function to prevent idle pumps from seizing up.
- Possibility of standby pump allocation.
- Possibility of backup sensor (redundant primary sensor).
- Secondary sensor (Possible to switch to another sensor/setpoint).
- Multi-sensor (up to 6 sensors to influence the setpoint).
- Manual operation.
- Possibility of external setpoint influence.
- Log function.
- Setpoint ramp.
- Possibility of digital remote-control functions:
- System on/off.
- Max., min. or user-defined duty.
- Up to 6 alternative setpoints.
- Digital inputs and outputs can be configured individually.
- Pump and system monitoring functions:
- Minimum and maximum limits of current value.
- Inlet pressure.
- Motor protection.
- Sensors and cables monitored for malfunction.
- Alarm log with the previous 24 warnings/alarms.
- Display and indication functions:
- Colour screen display.
- Green indicator light for operating indications and red indicator light for fault indications
- Potential-free changeover contacts for operation and fault.
- Grundfos bus communication.
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It is possible to add CIM communication modules for communicating with Scada/BMS.
Pumps, piping, cabling complete as well as Control MPC are mounted on the base frame.
The booster system has been preset and tested.
Zestawy podwyższania ciśnienia - opcje.
Wydajność: - Woda
Dopuszczalna temp. cieczy: - 5 °C .. 60 °C
Max. ciśnienie robocze: - 16 bar
Wydajność (Pompownia): - 116 m³/h
Wydajność bez 1 pompy
Wydajność bez 1 pompy
Prąd znamionowy: - 44.9 A
Moc nominalna: - 5.5 kW
Masa netto: - 613 kg
Moc nominalna
Zbiorniki membranowe, zabezpieczenie przed suchobiegiem
i sterowniki patrz osprzęt.
