Direct Digital Control Panels ( DDC Panels)
Specification
- Controller platform: Automated Logic Corp (ALC) WebCTRL, compatible BACnet
- Communication: BACnet MS/TP, BACnet/IP, Modbus RTU/TCP, LonWorks
- I/O: Universal inputs (AI, DI), AO, DO scalable to application
- Programming: ALC GPC Builder graphical programming environment
- Visualisation: WebCTRL web-based HVAC monitoring and control
- Standards: ASHRAE 135 (BACnet), ASHRAE 90.1 (energy efficiency)
- Commissioning: Functional testing of all loops, setpoint verification, trend logging setup
- IP rating: IP31–IP41 indoor panel; weatherproof enclosure option
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Direct Digital Control (DDC) panels are the field-level intelligence of Building Management Systems (BMS) and HVAC automation housing the controllers, I/O modules, and communication interfaces that monitor and control Air Handling Units, Fan Coil Units, chiller plants, and associated mechanical services. Team Switchgear and Control LLC designs, assembles, programs, and commissions DDC panels from our Dubai facility, using Automated Logic Corporation (ALC) WebCTRL controllers and compatible BACnet, Modbus, and LonWorks field devices for commercial, residential, hospitality, and healthcare projects across the UAE.
DDC Panel Capabilities
- AHU (Air Handling Unit) DDC panels temperature, humidity, CO2, and pressure control with variable speed fan drives and modulating valve actuation
- FCU (Fan Coil Unit) controllers zone-level temperature control with 2-pipe and 4-pipe changeover, occupancy scheduling, and room panel interface
- Chiller plant DDC sequencing, staging, and optimisation of chiller, cooling tower, and chilled water pump systems
- VAV (Variable Air Volume) box controllers pressure-independent zone control with damper actuator and reheat
- Energy metering and sub-metering kWh pulse counting, BTU metering, and HVAC system energy performance KPIs in WebCTRL
- BACnet MS/TP and BACnet/IP native communication integration with IBMS/EBI platforms
Applications
- Hotels and resorts centralised HVAC monitoring and guest comfort zone control
- Hospitals and healthcare facilities critical environment control with redundant monitoring
- Commercial office towers tenant comfort, energy metering, and DEWA sub-metering
- Schools and universities scheduled HVAC with CO2 demand-controlled ventilation
- Industrial facilities process area climate management with BMS alarm integration
What is the difference between a DDC panel and a BMS panel?
A DDC (Direct Digital Control) panel is the field-level controller it directly reads sensors and actuates valves, dampers, and fans based on its programmed control logic. A BMS (Building Management System) panel or head-end is the supervisory layer it communicates with multiple DDC controllers over BACnet or Modbus, displays system-wide monitoring in a graphical interface, manages alarms, and generates energy reports. Team Switchgear supplies both DDC field panels and the complete BMS head-end integration under one scope.
Can you supply DDC panels compatible with existing Honeywell or Trend BMS systems?
Yes. Where the client has an existing Honeywell, Trend, Distech, or other BACnet-compliant head-end, our DDC controllers can be configured as BACnet MS/TP or BACnet/IP devices and integrated into the existing network. We map all points to the client’s existing naming convention and supply the BACnet Device Instance files for the system integrator. We are also able to supply and configure our own ALC WebCTRL graphics if a standalone DDC monitoring system is required alongside the existing BMS.