The latest-generation hydraulic power unit for medium-power applications (7.5 kW to 30 kW) raises product standards to the next level.

The all-in-one power unit impresses with its smart combination of speed variability, synchronous motors and axial piston pumps, which make the power unit even more efficient than comparable components. This is thanks to the ideal combination of servo motor and pump, as well as needs-based energy consumption.

Preset controllers in variable-speed pump drives adjust the energy requirements of the machine to match the particular conditions. Consequently, the speed is reduced under partial or no load to save energy, and conversely increased under full load with a highly dynamic response.

Up to 80 percent energy saving compared to constantly driven power units are achieved through the use of variable-speed pump drives.

The all-in-one power unit CytroBox combines a small footprint with a novel and compact design. This innovative design concept also includes a tank with optimized degassing and flow.

Thanks to a CFD simulation, the oil volume is reduced by 75 percent – from 600 liters to a mere 150 liters.

The use of synchronous technology also has a space-saving effect. Powerful synchronous motors with a length of only 400 mm and a diameter of 200 mm are up to 90 percent smaller than comparable asynchronous motors.

Further advantages of synchronous technology are greater dynamics and increased energy density.

In addition to the compact components, the innovative water cooling concept makes all coolant lines unnecessary.

In the new hydraulic power unit, all of these functions are combined in a compact control cabinet. As a result, the CytroBox can be integrated into existing production lines in a flexible, space-saving manner.

With the CytroConnect Monitor, operators have all information regarding the CytroBox at their fingertips at all times. The data collected are transferred to the browser-based CytroConnect Monitor web dashboard via Multi-Ethernet or 4G-LTE. As a result, operators can be kept up to date regarding the current operating status and key status indicators on any end device (tablet, smartphone, PC). This plug and play service is free of charge and can be used without additional installation work. CytroConnect is implemented in the CytroBox as standard.

With CytroConnect Maintain, data concerning the most important components for reliability and operating life (the hydraulic oil and the drive unit) are assessed. Comprehensive insights into the correlation between the speed of the servo motor and the flow allow the monitoring of system leakage, while correlations between motor data and the operating pressure allow conclusions regarding drive behavior. The leakage sensor, temperature and level sensor, particle sensor, water sensor and oxygen sensor are additional data sources which can be used to make a status diagnosis.

With CytroConnect Predict a predictive analysis of the system is performed for maximum system availability. In case of deviations, the system automatically calculates the expected lifetime of the affected component and immediately informs the operator via push message. Predictive maintenance applications can thus be planned in advance in the operator's maintenance plans, thus ensuring maximum availability.

Up to 80 percent energy saving compared to constantly driven power units are achieved through the use of variable-speed pump drives.

The daytime sound pressure level should not exceed an average of 80 and 85 dB (A) or a peak of 135 dB (A). The new hydraulic power unit’s noise emissions are well below these limits.

The airborne sound is absorbed completely by the compact arrangement of all the components in one unitary housing and the built-in sound insulating mats. This way, no sound leaks out. In order to reduce noise emissions stemming from structure-borne noise, the motor pump group is rigidly affixed to a polymer-concrete foundation. The damping bearings which typically transmit the noise to the tank are completely eliminated.

The compound polymer-concrete foundation increases the inertial mass, whereby the center of gravity of the power unit is located deeper. Any vibrations which arise are absorbed efficiently. Consequently, the noise emission of the hydraulic power unit is less than 75 dB (A) – even at full load. Comparable power units have an average noise level of 85 dB (A).

A low level of noise pollution reduces the need for additional measures and ensuing costs for noise reduction, and also makes working very pleasant, even in direct proximity to the hydraulic power unit.