Johnson Controls MS4PM12CT-11 Field Controller

Professionals in the field rely on the Johnson Controls MS4PM12CT-11 for its precise multi-stage operational logic in demanding HVACR environments. This four-stage field controller is engineered for complex sequences, providing individual setpoint and differential adjustments for up to four stages of heating or cooling. By utilizing an integrated NTC temperature sensor, the unit monitors environmental conditions in real-time to maintain tight setpoint tolerances without the need for additional external sensing hardware. As a panel mount HVAC controller, it fits standard cutouts for streamlined installation in mechanical rooms, data centers, and industrial process facilities. The MS4PM12CT-11 operates on a 12V supply and is designed without an internal relay pack, offering technicians maximum flexibility to integrate with specific power handling components or external relay banks required by the system's load profile.

Key Benefits:

• Precision 4-Stage Logic: Manage secondary heating and cooling stages with independent offsets to prevent short cycling and optimize energy consumption.
• Integrated Sensing: Features a high-accuracy Johnson Controls A99B sensor for reliable thermal feedback and simplified field wiring.
• Advanced Programming: Includes anti-short cycle delays, interstage time delays, and keypad locking to ensure system stability and prevent unauthorized adjustments.
• Flexible System Integration: The "No Relay" design allows contractors to specify external contactors or solid-state relays tailored to high-amperage or specialized voltage requirements.
• Versatile Operation: Supports multiple modes including Direct (Cooling), Reverse (Heating), and Deadband for comprehensive climate control.

Common Questions:

How do I calibrate the temperature offset on the MS4PM12CT-11?
Access the "OFS" parameter in the configuration menu to adjust the displayed temperature to match a certified reference thermometer, compensating for long sensor lead runs.

Can this controller be used for both heating and cooling simultaneously?
Yes, the Johnson Controls MS4PM12CT-11 supports independent setpoints for heating and cooling, making it suitable for year-round environmental control in commercial applications.

What happens if the temperature sensor fails?
The controller features an "SF" (Sensor Failure) setting, allowing you to define whether the outputs should default to ON or OFF to protect the equipment until the sensor is replaced.

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.