B3800 Schneider BACnet Direct Digital Controller for Building Automation
The Schneider Electric b3800 BACnet Direct Digital Controller (DDC) is a powerful programmable controller for building automation systems. This controller provides comprehensive HVAC control capabilities with native BACnet protocol support for seamless integration into modern building management systems.
Technical Specifications
| Protocol |
BACnet IP and BACnet MS/TP |
| Communication |
Ethernet 10/100 Mbps + RS-485 |
| BACnet Objects |
Up to 256 objects supported |
| Analog Inputs |
8 universal inputs (0-10V, 4-20mA, 10kΩ) |
| Digital Inputs |
8 digital inputs with pulse counting |
| Analog Outputs |
4 * 0-10V outputs |
| Digital Outputs |
4 relay outputs (3A @ 250V AC) |
| Control Algorithms |
PID, on/off, staged control |
| Programming |
Function block programming via software |
| Memory |
512KB program memory |
| Operating Voltage |
24V AC/DC (±15%) |
| Power Consumption |
≤20VA |
| Operating Temperature |
-20°C to +55°C |
| Storage Temperature |
-40°C to +85°C |
| Humidity |
10% to 90% RH (non-condensing) |
| Housing |
DIN rail mount enclosure |
| Protection |
IP20 |
| Certifications |
CE, UL, BTL listed, EN 60730-1 |
Application Scenarios
- Air handling unit (AHU) control and monitoring
- Chiller and boiler plant automation
- Multi-zone VAV system control
- Lighting control and scheduling
- Energy metering and management systems
- Critical environment monitoring and control