GKB24-SR-T N4H | Damper Actuator | 360 in-lb | Electronic FS | 24V | Modulating | NEMA 4H | WITH HEATER OPTION | Belimo (OBSOLETE)

Damper Actuator | 360 in-lb | Electronic FS | 24V | Modulating | NEMA 4H | WITH HEATER OPTION

Damper Actuator | 360 in-lb | Electronic FS | 24V | Modulating | NEMA 4H

Application

For proportional modulation of dampers in HVAC systems. Actuator sizing should be done in accordance with the damper manufacturer’s specifi cations. The actuator is mounted directly to a damper shaft up to 1.05” in diameter by means of its universal clamp. The actuator operates in response to a 2 to 10 VDC, with the addition of a 500 resistor, a 4 to 20 mA control input from an electronic controller or positioner. A 2 to 10 VDC feedback signal is provided for position indication. Not to be used for a master-slave application.

Operation

The GK..24-SR-T N4 actuator provides 95° of rotation and a visual indicator shows the position of the actuator. When reaching the damper or actuator end position, the actuator automatically stops. The gears can be manually disengaged by pressing the button located on the actuator cover. The GK..24- SR-T N4 actuator uses a sensorless brushless DC motor, which is controlled by an Application Specifi c Integrated Circuit (ASIC). The ASIC monitors and controls the actuator's rotation and provides a digital rotation sensing (DRS) function to prevent damage to the actuator in a stall condition. Power consumption is reduced in a holding mode. The actuator is electronically protected against overload. The anti-rotation strap supplied with the actuator will prevent lateral movement. Add-on auxiliary switches or feedback potentiometers are easily fastened directly onto the actuator body for signaling and switching functions. 

Fail-Safe Indication

Green LED status indicator light sequence:

On: operation ok, no faults Blinking: fail-safe mechanism is active

Off: fault is detected or not in operation / capacitors charging

Installation Note: Use suitable fl exible metallic conduit or its equivalent with the conduit fi tting.

Not suitable for plenum applications.