Field Instruments

General

The DAC-304 is a fully programmable, Native BACnet® Advanced Application Controller that communicates on an RS-485 LAN using the BACnet MS/TP protocol. The DAC-304 is designed for a wide-range of applications that have small local I/O requirements. It also supports BACstat® and other Delta LINKnet devices.

Features

• Fully programmable in GCL+
• Supports 4 BACstat network sensors on LINKnet for room sensing and control or 2 Delta Field Modules on LINKnet for I/O expansion
• Firmware upgrade and database load/ save over the network
• Optional field upgrade to Modbus® RTU with hardware key
• Service port
• Screw or DIN rail mountable
• LED indicator for each output, power, CPU and SCAN status

Specifications

• Make: Delta
• Model: DAC-304
• BACnet Device Profile: BACnet Advanced Application Controller (B-AAC)
• Inputs: 3 Universal Inputs (10-bit) supporting:
  • • 0-5 VDC
    • 0-10 VDC
    • 10 kΩ Thermistor
    • Dry Contact (using 10 kΩ Thermistor
    • jumper setting)
    • 4-20 mA
• Outputs:
  • • 4 Binary TRIAC Outputs (jumper configured for internal or external power)Device Addressing:  Set via DIP switches and jumpers, or software setup
• Connectors: Removable screw-type terminal connectors
• Wiring Class: Class 2 / SELV
• Power: 24 VAC 50/60 Hz @ 8 VA, 80 VA with fully-loaded TRIAC Outputs
• Technology:
  • (non-Ethernet version) 16-bit processor 1 MB Flash memory 127 KB SRAM memory for database
  • (Ethernet version) 16-bit processor 2 MB Flash memory 319 KB SRAM memory for database Super Capacitor for 72-hour backup of real-time clock and SRAM
• Communications Ports;
  • • Twisted-Pair Ethernet (10-BaseT) @ 10 MB, BACnet IP, BACnet over Ethernet
    • Main LAN (NET1): BACnet MS/TP @ 9600, 19200, 38400 or 76800 bps (default), max of 99 devices per BACnet MS/TP network
    • SubLAN (NET2): Delta LINKnet @ 76800 bps, max 6 devices on LINKnet, with no more than 2 DFM devices

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