Belimo Actuator 2-10V Fail-Safe 24VAC/DC 4Nm IP54 150s LRF24-SR

This Belimo electrical actuator is designed for controlling quarter turn valves. The actuator delivers a torque of 4 Nm and can open/close the valve in 150 seconds. This actuator requires a supply voltage of 24 V AC/DC and has a visual positioning indicator to clearly see the valve position. The modulating actuator is requires a 2-10 V input and offers position feedback, ensuring precise control over its operation and accurate monitoring of its position within the designated voltage range. The actuator contains an internal spring that returns the valve to its default position when the voltage is neutral. The actuator has a durable plastic housing and has an IP54 protection rating. This actuator can operate within ambient temperatures between -30 and 50 °C (-22 and 122 °F). The actuator comes with a 1-meter power cable.

The actuator is equipped with overload protection, the actuator doesn't need limit switches and will stop automatically when the end stop is reached. The valve can be manually operated and adjusted to any position using a hand crank. Unlocking can be done manually or automatically by applying the operating voltage. The actuator can be directly mounted on the ball valve using a single screw. The mounting orientation relative to the ball valve can be chosen in 90° increments. The actuator can be controlled to a standard 0-10 V control signal. Simultaneously, the actuator moves the valve to the operational position while also engaging the return spring. If the supply voltage is interrupted, the spring's force reverts the valve back to its fail-safe position. The rotation angle can be adjusted with mechanical end stops.

Pros:

• The actuator is equipped with a fail-safe feature
• Modulating actuator with a control signal of 2-10 V
• Manual override
• The actuator is overload protected
• Visual position indicator

Cons:

• The time to open/close of 150 s is slow for some applications