SCR-EPM Screw compressors
Basic description
- oil lubricated airend
- IE4 motor with permanent magnets
- speed control by frequency converter
- direct drive 1:1
- one-stage compressor
- SCR9000 electronic controller with 7" touch display
- ventilation with frequency converter
Pressure: 7, 8, 10 bar
FAD: 36-570 Nm3/h
Design arrangement
airend
electric motor
air filter
inlet valve
oil receiver
air and oil cooler
cooling fan
minimum pressure valve
electronic controller
frequency converter
electrical switchboard
Technical properties
Extreme performance airends
Airends are the heart of screw compressors and airends on the SCR-EPM series are massive and provide such a huge amount of produced air that they can very often replace compressors with a power input of one to two orders of magnitude higher.
There is only a very limited number of compressors on the market that can compete with the FAD performance of the SCR-EPM series.
Lossless direct drive 1:1
Thanks to the direct connection of the airend to the electric motor, the SCR-EPM series compressors operate without any energy loss in the transmission unit.
Compared to compressors with V-belts, coupling or gearbox, this eliminates any maintenance.
More about direct drivePM motor with IE4 efficiency
The SCR-EPM compressor series uses state-of-the-art oil-lubricated permanent magnet motor technology, which, due to its design, has an extreme efficiency that exceeds the IE4 efficiency requirements of IEC EN 60034 and exceeds the conventional IE2 efficiency motors used as a standard solution for variable speed compressors by an average of 5 to 6 %.
More about PM-motor
SCR9000 electronic controller
Modern system for controlling the operation of screw compressors with a comfortable 7" color touch screen and has the following functions and features:
- button control
- display of all necessary parameters about the operation of the machine
- indication of operational warnings and alarms
- alarm history for machine fault analysis
- user levels via passwords
- practical display of electricity consumption
- weekly schedule with 5 time slots for switching the compressor on and off
- automatic restart after power failure
Frequency converters with vector control
The SCR-EPM compressors are equipped with state-ofthe-art INOVANCE frequency converters, which allow them to maintain the required output pressure and adapt the speed of the drive unit to the immediate needs of the compressed air supply.
The vector-controlled converters were specially developed for screw compressors and can provide very high torque at frequencies from 0.1 Hz.
Efficient oil separation
SCR-EPM series screw compressors are equipped with a highly efficient oil separation system that ensures perfect compressed air output quality with a peak oil content of < 3 ppm.
The oil is separated by a three-stage separation system using centrifugal force, gravity effect in a vertically oriented oil receiver and a high-quality separation filter.
Effective filtration system
Pipes instead of hoses
All necessary fluid connections are made with metal tubing instead of traditional rubber hoses. Thanks to this design change, there is no need to worry about any oil leaks, no risk of downtime due to hose bursting and, in addition, the internal pressure gradient is reduced due to the better flow of the medium through the smoother surface.
Generous machine cooling
A generously sized combined cooler is used to cool the oil and the outlet air, perfectly cooled by an efficient fan with infinitely variable speed control. Thanks to the cooling system used, the compressor can be operated at very high temperatures of up to +45 °C.
Information materials
Technical data
FAD performance is measured according to ISO 1217 and is listed for the maximum pressure of the model; additional FAD performance values at different frequencies and pressures can be found in the technical data sheets on request.
The noise level is indicated at a distance of 1 m from the machine.