Product description Control MPC-F is a multi-pump controller designed for control and monitoring of up to six identical Grundfos mains-operated pumps connected to one external Grundfos CUE frequency converter. The speed-controlled operation alternates between the pumps.
Control MPC-F is used for control of pumps in booster systems or circulation systems for heating, cooling and air-conditioning.
Control MPC-F ensures optimum adaptation of the performance to the demand by closed-loop control of these parameters:
- pressure
- differential pressure
- flow rate
- temperature
- differential temperature.
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Control MPC-F can also control pumps running in open-loop control.
Control MPC-F incorporates a control cabinet with a CU 351 multi pump controller, IO 351B module(s), a main switch and all the necessary components and wiring. The control cabinet is designed for floor-mounting. At the first start-up, the Control MPC-F will show a start-up wizard which helps you commission your system according to your specific installation. When the start-up wizard is completed, the Control MPC-F will operate according to your special requirements.
Functions Control MPC-F incorporates the setting/monitoring of the following functions:
- Setpoint
- Warnings and alarms
- Alarm log (storage of up to 24 warnings and alarms)
- PI controller adjustment
- Alternative setpoints (setting of up to six alternative setpoints)
- External setpoint influence (letting measured parameters influence the setpoint)
- Primary sensor setup (selection of the control parameter of the system)
- Clock program (setting of setpoints and time and day for their activation)
- Proportional pressure (setting of proportional pressure operation)
- Min. time between start/stop of pumps (setting a delay between the starting/stopping of one pump)
- Max. number of starts/hour (limitation of the number of starts/stops per hour)
- Standby pump allocation (selection of one or more pumps as standby pumps)
- Forced pump changeover (setting of pump changeover so that pumps run for the same number of operating hours)
- Pump test run (prevents pumps from seizing up and liquid from decaying in pumps, and removes trapped air)
- Pilot pump (control of pilot-pump operation in low-flow situations) - option
- Pump stop attempt (automatic stop attempts, self-learning or at fixed intervals)
- Pump start and stop speeds (control of start and stop speeds of pumps)
- Min. performance (selection of minimum performance)
- Compensation for pump start-up time (compensation for the time it take a mains-operated pump to reach full performance)
- Stop function (stop of the last pump in operation during low-flow situations)
- Soft pressure build-up (ensures smooth start-up of systems with empty pipes)
- Emergency run (pumps keep running regardless of warnings and alarms)
- Setting of digital inputs
- Setting of analog inputs
- Setting of digital outputs
- Setting of min., max. and user-defined duty
- Pump curve data (entering of data describing the performance curves)
- Control source (control from CU 351 or via bus connection)
- Fixed inlet pressure (setting of fixed inlet pressure)
- Flow estimation (optimisation of operation according to performance curves)
- Dry-running protection (with pressure/level switch, pressure transmitter or level transmitter)
- Min. pressure (monitoring of minimum pressure)
- Max. pressure (monitoring of maximum pressure)
- External fault (monitoring of external fault)
- Limit exceeded 1 and 2 (monitoring of a set limit 1 (warning limit) and limit 2 (alarm limit)
- Pumps outside duty range (indication of whether pumps fall outside duty range)
- Pressure relief function (monitoring of maximum system pressure) - option
- Display language (selection of display language)
- Display units (SI or US units)
- Date and time (setting of day and time)
- Passwords (setting of password for menu ?Operation? and/or ?Settings?)
- Ethernet connection (controlling the system from a remote PC)
- GENIbus number (allocation of GENIbus number)
- Software status (status of software version).
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Control MPC was designed according to these directives:
- Machinery Directive (98/37/EC)
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Standards used: EN 809 [2000] and EN 60204-1 [2006].
- EMC Directive (2004/108/EC)
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