Description
Johnson Controls C450CRN-1 Control Module Overview
The Johnson Controls C450CRN-1 is a network-capable control module engineered for building automation and HVAC control applications. Featuring RS485 MODBUS communications, this module integrates seamlessly into modern BAS networks, enabling reliable data exchange and centralized system management. The onboard LCD display and four-button touchpad user interface provide intuitive local configuration and monitoring without the need for additional programming tools.
Key Features
- RS485 MODBUS communications protocol for robust network integration
- Backlit LCD display for clear, on-site status monitoring and configuration
- Four-button touchpad user interface for easy local programming
- 24 Vac external supply power for standard HVAC panel compatibility
- 0–5 Vdc input signal for analog sensor and transducer connectivity
- No onboard outputs — designed specifically for control modules with network communications capabilities
- Compatible with Johnson Controls C450 series control platform
Communications & Connectivity
The C450CRN-1 leverages the industry-standard RS485 MODBUS protocol, making it an ideal choice for integration with building automation systems, energy management platforms, and third-party controllers. The 0–5 Vdc analog input allows connection to a wide range of sensors and field devices, while the 24 Vac power supply ensures compatibility with standard HVAC control panels.
User Interface
The built-in LCD screen and four-button touchpad deliver a straightforward, menu-driven interface for on-site setup, diagnostics, and parameter adjustments — reducing commissioning time and minimizing the need for laptop-based configuration tools in the field.
Application
Ideal for commercial HVAC, building automation, and energy management applications where network communications, local display, and analog input capabilities are required in a single compact control module.
Specifications
- Model: C450CRN-1
- Brand: Johnson Controls
- Communications: RS485 MODBUS
- Display: LCD
- User Interface: Four-button touchpad
- Supply Power: 24 Vac (external)
- Input Signal: 0–5 Vdc
- Onboard Outputs: None (network communications model)
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