Industrial MP503 Programmable Input Output Controller

Description:

The Trane MP503 (also referenced as MP53 Tracer MP) is a programmable input/output controller used in Trane Tracer building automation systems to monitor field devices and provide binary control of HVAC equipment. Commonly installed in commercial buildings, air handling units, rooftop units, central plants, and building automation systems, the MP503 serves as a configurable I/O module that communicates over a LonTalk® network. Maintenance teams, HVAC service technicians, and system integrators use the Tracer MP503 for equipment monitoring, control expansion, retrofit projects, and building automation upgrades.

Applications:

The Trane MP503 is designed to monitor temperature sensors, pressure transmitters, current loops, voltage signals, and dry-contact inputs while controlling relays for fans, pumps, dampers, compressors, lighting, and other building equipment. It is commonly used in commercial office buildings, hospitals, schools, universities, industrial facilities, and energy management systems where flexible field I/O and reliable building automation are essential. The controller integrates with Trane Tracer Summit, Tracker (BMTK), and other LonTalk-compatible building automation systems.

Technical Specifications:

• Product Name: Trane Tracer MP503 (MP53)
• Manufacturer Part Number (MPN): 4950-0490
• Optional Metal Enclosure Part Number: 4950-0590
• Manufacturer: Trane
• Product Type: Programmable Input/Output (I/O) Controller
• Controller Series: Tracer MP503
• Communication Protocol: LonTalk® / LonMark® Compatible
• Power Supply: 20–30 VAC (24 VAC Nominal), 50/60 Hz
• Universal Inputs: 4 Configurable Inputs
• Binary Outputs: 4 Independently Controlled Relay Outputs
• Supported Input Types: 10 kΩ Thermistor, 0–20 mA, 0–10 VDC, Dry Contact
• Function: HVAC Equipment Monitoring and Binary Control
• Compatible Systems: Trane Tracer Summit, Tracker (BMTK), and LonTalk Building Automation Systems
• Mounting Type: Panel Mount
• Installation: OEM Building Automation Controller
• Application Environment: Commercial HVAC, Building Automation Systems, Energy Management, Air Handling Units, and Industrial Control Panels

Common Replacements:

• Trane UC400 Programmable Controller
• Trane UC600 Programmable Controller
• Trane MP581 Programmable Controlle