The speed variable closed-loop control system
A lower speed in the part-load range reduces energy losses and noise emissions at the pump and electric motor. The use of standard frequency converters optimizes the price-performance ratio. Emergency operation without frequency converters is also possible, as is retrofitting. Identical mechanical interfaces permit replacement of SYDFEE and SYDFEC with SYDFEn. The animation below shows the principle of SYDFEn.
The speed at this animation is constant. The swivel angle actual value follows the set point and is reduced only with rising pressure. The relationship of swivel angle and the flow (speed of the cylinder) is nearly constant.
After teach-in according to the machine cycle the speed variable mode will be activated. With this, the speed of motor and pump can be reduced to save energy. The swivel angle of the pump is increased to maintain flow on a constant level.
SYDFEn-2X
Standard pump series
Nominal pressure 280 bar
18 to 140 ccm
For detailed information, please refer to data sheet R.30030
SYDFEn-3X
New pump series
Nominal pressure 280 bar
71 to 140 ccm
Reduced noise generation
Improved efficiency
Increased reliability
For detailed information, please refer to data sheet R.30630
SYDFEn-1X
High pressure pump series (in preparation)
Nominal pressure 350 bar
125 to 355 ccm
For detailed information, please refer to data sheet R.30035
