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Variable Speed Drive MAH for 1-4 Pumps
The MAH pump control system is used for the regulation/control of pumps and motors. A frequency inverter system with PI controller is used to achieve exact and extremely fast adaptation to changing operating conditions. The pressure transducer (0-10V or 4..20mA) gives a feedback signal. It can be monitored directly on the text display. All parameters can be displayed/set by a menu. The system is parameterized at the factory.
Customer-specific special solutions are possible on request at any time.
Control system for temperature or water level is also available.
Quick info:
- 1-4 Pumps
- 1,5 ... 132 kW 400V 3~
- Text display
- Steal enclosure IP54
- 4..20mA / 0..10V transducer
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Applications:
- Booster sets
- Rain systems
- Cooling systems
- Filtration
- Water level control
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Features of the MAH variable speed drive:
- Capacities: 1,5kW- 132kW/ 400V 50/60Hz
- Variable speed drive for 1 … 4 pump operation; each pump with inverter
- Or variable speed drive for 1 pump plus 1 or 2 pumps with fix speed
- Fully programmable frequency inverter system
- Connection for pressure transducer 0..10V or 4..20mA
- PI-control for
- well-balances regulation
- minimum pressure fluctuation
- very fast adjustment to sudden pressure fluctuation
- Water-stagnation-identification
- switch to stand-by-mode if no water is demanded
- programmable start pressure to have no pump creeping
- Feedback pressure check
- adjustable
- to switch off pump in case of deviation (alarm message)
- can be used for dry running protection, water overload, over pressure
- Transducer check
- in case of transducer failure an alarm occurs
- fix speed running can be started immediately
- Automatic RUN
- if this function is selected the unit starts operating after power is switched on
- Duty/Assist operation
- automatic pump switch over depending on working hours
- switch over in case of failure
- 1 transducer operation for multiple pump panels possible
- 2 transducer operation for 1 pump panels possible
- Fix speed operation with programmable frequency
- External inputs
- terminal run, terminal reset, target pressure switch over, float switch, PTC, …
- External outputs
- volt free contacts (com., n.c., n.o.)
- programmable for alarm, pump run, …
- Programmable leakage control
- Programmable 24-h-run
- Programmable start pressure
- Programmable running time control
- Clock
- 10 trip history monitor
- Hours run counter
- Text display for: Pressure, target pressure, motor current, speed, …
- Optional RS485 port / LON-Bus port
- Steal enclosure IP54 (RAL 7032)
- Main isolator
- Fuse
- Radio noise filter (for buildings)
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Contact 
Route map 
Editors 
Speed control for pumps 
Electronic pressure switch 
Pump-Controller MAH
