Belimo NRDVX24-SR-T-SI - short-stroke actuator for globe valves

Belimo NRDVX24-SR-T-SI actuator

Modulating short-stroke actuator designed to operate Siemens short-stroke globe valves in stationary HVAC systems. The analogue control signal Y determines the actuator position; the device also provides a position feedback signal U.

Key features and specifications

• Actuator force: 500 N; stroke: 5.5 mm.
• Rated voltage: AC/DC 24 V; frequency: 50/60 Hz.
• Operating range Y: 0...10 V; adjustable operating range Y: 2...10 V; position feedback signal U: 0...10 V.
• Motor running time: 140 s / 5.5 mm.
• Power consumption during operation: 1 W; power consumption for wire sizing: 2.5 VA.
• Power and control connection: 4 mm² terminals (cable ø6...8 mm, 4-core).
• Manual override: temporary or permanent disengagement of the gearbox using the knob on the housing.
• Actuator mounting: G 3/4"; direct mounting on the valve using a knurled nut.
• Degree of protection IEC/EN: IP40; protection class IEC/EN: III, Safety Extra-Low Voltage (SELV).

The actuator is protected against overload and stops automatically when it reaches the end position. Protect it from moisture; it is not intended for outdoor use.