The DAC-633PoE is a fully programmable, Native BACnet Advanced Application Controller for low density I/0 applications featuring Power over Ethernet (PoE). PoE provides high speed communications and device power in a single cable, simplifying wiring and eliminating the need for a local control transformer.

The DAC-633PoE supports BACnet IP, and BACnet over Ethernet protocols on its Ethernet port. It also support a RS-485 subLAN of Delta LINKnet devices such as the BACstat line of smart network sensors and DFM I/O expansion modules.


The DAC-633PoE is suitable for controlling a wide range of equipment with small I/O requirements. It is particularly suited to applications such as fan coils or unit ventilators which often do not have a local step down transformer to provide controller power.

The fully programmable DAC-633PoE can be tailored to specific applications by creating and modifying BACnet objects and GCL+ programs.


  • Power over Ethernet (PoE)
  • Powerful Native BACnet firmware including local scheduling, trending and alarming functions
  • Fully programmable in GCL+
  • BACnet IP and BACnet over Ethernet Main LAN communications
  • RS-485 subLAN port supporting LINKnet I/O expansion (or optional Modbus gateway)
  • Actuator power terminal (24VDC) for each analog output simplifies wiring
  • Firmware upgrade and database load/save over the network
  • Service port
  • Screw or DIN rail mountable

BACnet Device Profile

BACnet Advanced Application Controller (B-AAC)


6 Universal Inputs (10 bit), jumper configurable for:

0-5VDC, >1MΩ loading

0-10VDC, 20KΩ loading

10 KΩ Thermistor, 10KΩ to 5VDC

Dry Contact (using 10K jumper setting)

4-20mA, 250Ω to Gnd


2 Analog Outputs

0-10VDC@20mA max per output

Software configurable as binary or analog

3 Binary FET Outputs


Internally powered switching to ground

LED status indication of each output

1 universal Output

Configurable as either 0-10V or 24VDC FET


32-bit processor

2 MB (16 megabit) Flash memory

319 KB SRAM memory for database

LED indication of CPU and SCAN status

Device Addressing

Software Addressed

Communications Ports

Main LAN

Ethernet (10BaseT), BACnet IP and BACnet over Ethernet protocols supported.


RS-485 Port (up to 76800 bps) Delta LINKnet, or Modbus RTU protocols supported.

(maximum 4 LINKnet devices with no more than 2 DFM devices)


Removable screw-type terminal connectors

Wiring Class

NEC Class 2 / SELV

PoE Power In

802.3at PoE: 53VDC, 25.5W max*

802.3af PoE: 48VDC, 12.95W max*

*See install guide for details on calculating PoE power budget.

24VDC Power Out

802.3at PoE supply: 16W max*

802.3af PoE supply: 6W max*

*max total power available for external field devices powered from either 24VDC out terminal or binary outputs 1 – 4


32° to 131°F (0° to 55°C)

10 - 90% RH (non-condensing)


105⁄16 x 41/4 x 115⁄16in

(26.2 x 10.7 x 4.9 cm)

0.959 lb. (435g)





UL 916