Danfoss 45 E Frame Series Service Manual page 17

Service Manual
Series 45 E Frame Open Circuit Pumps
Features
© Danfoss | September 2016
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the solenoid. When combined with an angle sensor, this control allows for a PC/LS control with electronic
torque limiting.
J-frame pump with integrated ETL control
Pump torque consumption is a function of pump outlet pressure, pump displacement, and pump
mechanical efficiency. When pump mechanical efficiency is considered constant, the pump torque can
be limited when pump displacement is known and pump pressure is controlled. As pump displacement
increases, the pump outlet pressure can be limited using the PRV to result in a constant torque limit.
Pump outlet pressure is equal to the load sense pressure, which is limited with the PRV, plus the margin
pressure setting of the pump.
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