The EP PositioningUnit (RPU) will help you to optimize your greenhouse climate. This advanced position sensor accurately monitors and relays the positions of air vents or climate screens, enhancing your control over the ambient climate. This will result in higher crop yields and less power consumption – boosting your profits, as well as benefiting the environment.
• Flawless position monitoring
• Continuous reliability
• High return on investment
• Extremely easy to install
• Maintenance-free design
While in the past simply opening and closing air vents or screens would usually be sufficient, the introduction of the climate computer has led to much more sophisticated climate control. This requires continual adjustments to be made based on the weather conditions. The RPU is the new standard in position monitoring, serving as the crucial link between your climate computer and your drive system. Better position monitoring allows the climate to be controlled more precisely, increasing your crop yields and thus raising your profits.
Reliable and accurate position feedback
The RPU is a contact-free, multi-turn magnetic encoder equipped with a chip with integrated Hall sensors, which ensures a linear signal. The system is extremely accurate, continuously measuring with a resolution of more than 4000 positions per revolution. The RPU converts the digital signal into an analogue 4-20mA output signal. Above the sensor, there is a rotating non-wearing magnetic axis, mounted to the threaded limit switch shaft of the RW motor gearbox. The RPU uses a separate 24V power supply. If installed in a RLL300, the RPU can be connected directly to the power supply.
RPU versus potentiometer
The RPU has more benefits. For instance, you no longer have to recalibrate and correct the feedback signal every year, as was necessary with conventional potentiometers. Potentiometers also contain parts subject to wear and tear, leading to measurement deviations over time. RPU´s contact-free measuring technology is impervious to wear. This ensures that the quality of the feedback signal won´t degrade. The RPU can be installed in new and existingEP RW motor gearboxes with potentiometers.
Precision in practice
The measuring range can be perfectly aligned with the operating range of a ventilation or screen system. In practice, this means that an RPU is able to measure air vent positions with an accuracy of 0.5 mm and climate screen positions with an accuracy of 2.0 mm. The RPU can also set the measuring range smaller than a system´s operating range.
Reliable operation
The RPU monitors constantly whether the measuring signal is valid. If the measured value deviates from the expected value, it will generate an error message and send out a 0 mA signal. This may occur, for example, during a temporary interruption of the RPU´s supply voltage. If the RPU is connected to the limit switch system of the RW motor gearbox, this error message will be reset automatically when an end position is reached.
Fast return on investment
The RPU is a relatively small investment that will help you to optimize your greenhouse climate. The unit will be quickly pay for itself by allowing your climate computer to operate more effectively and reducing your energy consumption. Compared to the potentiometer that is subject to wear and requires frequent replacement, the RPU will provide significant savings in maintenance and replacement costs.