“Ideally suited for butterfly valves and control valves” Hanspeter Sommer, electrical engineer at Wasserverbund Region Bern AG about SCHEIDEGGER’s damper actuators:
The SCHEIDEGGER damper actuators can be mounted on all products known to us from the well-known damper suppliers instead of a handwheel and operated with the corresponding mechanical ratios. They are ideally suited for shut-off dampers as well as for control dampers.
The actuators are operated with 24VDC and low power consumption. With a battery of a few Ah, not only the measuring and control technology but also the dampers can be operated safely in the event of a power failure. If the energy of the battery is also used up, it is possible to operate the damper by hand with a crank.
The drives are mechanically simple and have an electrical interface that fits into any electrical concept via discrete analogue and digital signals.
The different actuator types all have uniform interfaces and minimise the effort in project planning and operation.
Intrinsically safe design
The drives have an intrinsically safe design and will not drive either the driven flap or themselves into a defective situation. When the casing is opened or the hand crank is inserted, the drive motor is switched off immediately despite pending run commands.
Designed with an external plug system, the flaps with their drives can be operated by laymen for disassembly, maintenance, etc.
Integrated current monitoring
The built-in current monitoring system quickly alerts us if a damper is running sluggishly due to deposits or other hydraulic problems and the pipe installation needs to be checked. After commissioning, the actuators run reliably, precisely and trouble-free without any maintenance.
Overview of designs
The following series of pictures shows the two drive types “1/4 direct drive” and “crank drive”, as well as an old Von Roll damper drive from the exhibition that has not been in operation since the pumping station renovation.