KMC Controls MEP-4002 Actuator

The KMC Controls MEP-4002 Actuator is a direct-coupled, proportional control solution designed for high-precision management of small dampers and valves in commercial HVACR systems. Engineering-grade 40 in-lbs torque allows this non-spring return motor to drive loads across a 95-degree angular rotation with smooth, reliable performance. Operating on a 24VAC/VDC power supply, the unit accepts a 0-10VDC analog input signal (or 2-10VDC via configuration) to provide exact positioning.

For modern building automation systems (BAS), the MEP-4002 incorporates advanced anti-jitter circuitry, which minimizes hunting and protects valve packing and damper seals from unnecessary wear. Direct mounting capability supports standard 1/4" to 5/8" round or 1/4" to 7/16" square shafts, eliminating the need for complex external linkages. The inclusion of a gear disengagement button facilitates easy manual positioning during commission or maintenance, while the non-rotation bracket ensures stable, vibration-free installation for long-term field service.

• Precise Proportional Control: Utilizes a 0-10VDC or 2-10VDC input signal for granular airflow and fluid regulation.
• Anti-Jitter Technology: Integrated circuitry filters out signal noise to prevent actuator "hunting," extending the life of mechanical components.
• Versatile Direct Mounting: Attaches directly to a wide range of round and square shaft sizes for universal damper actuator applications.
• Manual Override: Features a gear release lever for swift manual adjustments and system testing without power.
• Robust Environmental Rating: Housed in a polymer casing with a NEMA 2 and IP54 rating to withstand demanding mechanical room environments.

How do I resolve "hunting" or jittering in the actuator?
The MEP-4002 features built-in anti-jitter circuitry specifically to prevent this. However, if jitter persists, verify if the 0-10VDC signal is shielded and ensure the 24VAC common is properly grounded to the controller common to eliminate ground loops.

Can I adjust the rotation limits of the MEP-4002?
Yes. This model includes an adjustable mechanical end stop. You can use the end-stop screw to limit the stroke range to match your specific damper or valve requirements.

Is this actuator suitable for fail-safe applications?
No, the MEP-4002 is a non-spring return (non-fail-safe) actuator. It will maintain its last position upon loss of power. For applications requiring a return-to-zero or return-to-full-open state, a capacitor-driven or spring-return model should be specified.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.