اکچیوتر BELIMO مدل NRF24A-SZ-O

Modulating rotary actuator with fail-safe for ball
valves
• Torque motor 10 Nm
• Nominal voltage AC/DC 24 V
• Control modulating 0.5...10 V
• Position feedback 0.5...10 V
• Deenergised open (NO)

Mode of operation The actuator is controlled with a standard signal of DC 0 ... 10 V and moves the ball valve to
the
operating position at the same time as tensioning the return spring. The ball valve is turned back
to the emergency position by spring force if the supply voltage is interrupted.
Simple direct mounting Straightforward direct mounting on the ball valve with only one screw. The mounting position in
relation to the ball valve can be selected in 90° steps.
Manual override Manual operation of the valve with the hand crank, locking in any position with the interlocking
switch. Unlocking is manual or automatic by applying the operating voltage.
Adjustable angle of rotation Adjustable angle of rotation with mechanical end stop.
High operational reliability The actuator is overload-proof, requires no limit switches and automatically stops when the end
stop is reached.
Combination valve actuators Refer to the valve documentation for suitable valves, their permitted media temperatures and
closing pressures.