Schneider Electric (Barber Colman) 2390-510 Position Switch

The Schneider Electric (Barber Colman) 2390-510 is a specialized pneumatic minimum position switch designed for commercial HVAC systems requiring precise proportional action control. Engineered with an internal high-pressure selector relay, this unit is specifically calibrated for a 10 psig span output, making it the industry standard for establishing a minimum ventilation air setpoint. By integrating this switch into your pneumatic circuit, you ensure a manual minimum position signal is maintained to damper actuators, even when the controller output drops below the necessary threshold for code-compliant fresh air intake.

Built for durability in high-demand environments, the 2390-510 operates at a 20 psig main air pressure (30 psig max) with an efficient 8 SCFH air capacity and a low 29 SCIM air consumption. Its interface features barbed nipples compatible with 1/4" O.D. or 5/32" I.D. tubing, allowing for straightforward installation on Pneumodular manifold sockets. This component is essential for technicians managing mixed air temperature control and damper operation where reliability and steady-state performance are non-negotiable.

• Precision Control: Delivers a consistent 10 psig span output to match actuator requirements and maintain setpoint stability.
• High Select Logic: Integrated high-pressure selector relay automatically prioritizes the higher signal to ensure minimum damper openings.
• Optimized Efficiency: Minimal air consumption (29 SCIM) reduces the load on the building's compressed air system.
• Versatile Compatibility: Standard barbed fittings and modular mounting support rapid integration into existing Barber Colman pneumatic arrays.

What is the primary function of the 2390-510 in a pneumatic circuit?
It serves as a minimum position switch, typically used to ensure that outside air dampers stay open at a minimum percentage for ventilation, regardless of the primary controller's signal.

How do I adjust the output signal on this model?
The output is adjusted via the 300-degree rotation knob. A full rotation adjusts the output through the 10 psig span, allowing you to set the exact bleed or signal pressure required for your actuators.

Can this switch be used with 5 psig span actuators?
For 5 psig span actuators, the 2390-505 is generally recommended; the 2390-510 is specifically designed to align with 10 psig span mechanical requirements for proper proportional action.

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.