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Delta Controls - ORCA  

DNT-T103; DNT-T221; DNT-T305

Secondary Control Units
Network Thermostat - BACstat
Date Last Saved: 7/28/2011 2:41:03 PM

Product Name(s): DNT-T103; DNT-T221; DNT-T305
Product Description: The BACstat is a networkable temperature sensor with I/O built into it. It comes with pre-loaded, field selectable control strategy algorithms. The BACstat has a password protected configuration menu used to configure the stat's network properties and algorithm. It also has a Service Tool mode with advanced Air Balancing functions for use with the VAV algorithm, as well as other general functions. All of the properties can be accessed through the LCD interface, or set through variables in the controller database. DNT-T103 (Digital BACstat II) This controller comes with an internal 10K thermistor for measuring space temperature, 1 Universal Input, and 3 Binary Outputs (0.5 Amp triac). The binary outputs can be configured for Pulse Width Modulation or a Time Proportioned signal for analog operation of various actuators. Or, two binary outputs can be configured for tri-state actuators. DNT-T221 (Analog BACstat II) This controller comes with one internal 10K thermistor for measuring space temperature, 2 Universal Inputs, and 2 Analog Outputs (0-10 V) and 1 Binary Triac Outputs. The binary outputs can be configured for Pulse Width Modulation or a Time Proportioned signal for analog operation of various actuators. DNT-T305 This controller comes with an internal 10K thermistor for measuring space temperature, 3 Universal Input, and 5 Binary Outputs. The binary outputs can be configured for Pulse Width Modulation or a Time Proportioned signal for analog operation of various actuators.
Product Application(s): DNT-T103 (Digital BACstat II) It comes with a fixed object database and has the following configurable algorithms: VAV, VVT, Fan Coil, Heat Pump, and Reheat/Radiation. Setting the algorithm to NONE allows the I/O to be controlled from another device. When used with the VAV algorithm the external input must be connected to a flow sensor. DNT-T221 (Analog BACstat II) It comes with a fixed object database and has the following configurable algorithms: VAV, VVT, Fan Coil, Heat Pump, and Reheat/Radiation. Setting the algorithm to NONE allows the I/O to be controlled from another device. When used with the VAV algorithm the external input must be connected to a flow sensor. DNT-T305 (Digital BACstat II) Fully programmable for small I/O requirements: Fan Coil Unit, Unit Ventilator, Heat Pump.
Point Quantity Characteristics
Analog Input (AI): See Below
Digital Input (DI): N.A.
Universal Input (AI or DI): See Below 0-5V
0-10V
10 KW / Contact
Analog Output (AO): See Below Linear 1-10 Volt DC @ 20 mA max.
Digital Output (DO): See Below Triac 0.5 Amp @ 24 VAC
Universal Output (UO):
Other:
Control Unit Model #:AIDIUIDOAOUOOther
DNT-T103 1 1 3
DNT-T221 1 2 1 2
DNT-T305 3 5
A/D Converter Resolution
8 bit
10 bit
12 bit
16 bit
Other
D/A Converter Resolution
6 bit
8 bit
10 bit
No Analog Output
Other
HOA switches provided on each output?
Note: These are also available as an add-on from 3rd party vendors.
No
Both AO and DO
DO Only
Other
Indicating status LED on each output?
No
AO and DO
AO Only
DO Only
Other
Integral Flow Sensor? N.A.
Integral Damper Actuator? N.A.
Can controller accept occupant override from thermostat? N.A.
Can controller accept occupancy sensor input? N.A.
Expander Boards None
Network Ports, Protocol(s), and Speed(s) Supported
(Note: See 'Architecture' for network details)
BACnet MS/TP over EIA-485 @ 76.8 Kbps (peer-to-peer) (optional 9.6, 19.2, 38.4 kbps)

LINKnet using EIA-485 @ 76.8 Kbps
External Communication Ports, Speeds and Access Devices EIA-485 @ 76.8 kbps default (optional 9.6, 19.2, 38.4 kbps)

RJ-11 Service Port for Network-wide controller access
Additional Information (Optional)
Network Accessing Capabilities via Controller
Access controller only
Access controller plus additional controllers on network segment / LAN
Access all controllers on system
No access available on this controller
Other
Controller Access Devices
Laptop/PC
Local Display Panel (controller-mounted)
Local Display Panel (zone-mounted)
Handheld Interface Device (proprietary device)
PDA (3rd-Party HID)
Zone-Based port (details below)
Other
Zone-Based Interface Access RJ-11 Service Port provides BACnet and MS/TP communication access to entire controller network.
Zone Interface Hardware
Zone-Mounted touchpad (thermostat or stand-alone display)
HID (proprietary device)
PDA (3rd party HID, with software)
Laptop/PC
none
Other
*Note: This section covers the capabilities for accessing the controller or other parts of the network from the controller (i.e. 'bottom-up').
Standard access functionality is covered in the Architecture and Software sections.
**Does NOT include front-end OI functions. See vendor for specific functions available.
Functions Available Through Field Interface**:View ParamsChange ParamsChange
Programs/Logic
O&M SupportTAB/Cx Support
Laptop/PC
Local Display Panel (controller-mounted)
Local Display Panel (zone-mounted)
Handheld Interface Device (proprietary device)
PDA (3rd-Party HID)
Zone-Based port (details below)
Other
Microprocessor(s) 8 Bit 8 MHz NEC
Clock Type
Powered, battery-backed
Battery powered
Powered, no battery backing
None
Other
Clock Synchronization N.A.
Volatile Memory (RAM) Capacity 2 Kb
Volatile Memory (RAM) Uses
RAM use unrestricted
RAM use restricted as shown below
Information Not Provided
Program Execution / Calculation storage
Data / Trends / Alarms storage
Configuration / Parameter storage
Control Programming storage
Others
Is Volatile Memory Supported By Battery? No
Battery Type(s) None
Battery Life N.A.
Backup Battery Operating Time N.A.
Non-Volatile Memory Capacity (EEPROM/Flash)* 60 KB Flash Memory
Non-Volatile Memory Uses
Data / Trends / Alarms / Calculation Storage
Configuration / Parameter Storage
Control Programming Storage
Controller Operating System
Other
Additional Information
* Items in NV memory are not lost upon power or battery failure. Other types of NV memory such as EPROM, NOVROM, etc. do not directly impact system performance.
Can trend data be stored in this controller? NO
How many total trend values can be stored? N.A.
What is the controllers role in trending? N.A.
Can controller be programmed to 'push' data to archive or are trends 'pulled' from controller?
When full, does controller automatically send up trend data, overwrite data, or stop logging data? N.A.
Programming Method(s) Template-based configuration
Resident vs Non-Resident Program Execution Program execution in all secondary control units is controller resident.
Scheduling
Resident/Supervisory. This controller supervises the scheduling of other controllers.
Resident/Stand Alone. This controller contains its own schedule.
Non-Resident. This controller is dependent upon another controller for its schedule.
None. This controller has no scheduling features.
Other
Resident Energy Management
Energy management algorithms for this controller can be custom programmed
Pre-programmed/built-in algorithms available, and are fully editable using custom programming
Pre-Programmed/built-in with limited editing via template-based programming
Controller is not typically used for energy management functions
Others
Specific Pre-Programmed Algorithms Available
None (custom programming only)
None (not applicable)
Optimal Start/Optimal Stop
Peak Demand Limiting/Load Shedding
Economizer (enthalpy, dry-bulb, CO2, modulating/2-position, etc.)
Other
Additional Energy Management functions are resident at SI
Additional Programming Functions
DDC Loops (P, PI, PID) PI
Automatic PID Tuning Feature No
Automatical-Dial Alarm Support No
Does controller perform multiple retries and buffer/store alarm until connection is made? No
Are multiple destinations possible? No
Upon controller power loss or hardware failure:
Are network communications affected? No
Is loss recognized on/by the network and alarm reported? Yes
DO and AO response?
Outputs fail to a user pre-specified position
Outputs fail to a normal (unpowered) position
Outputs fail to last position
Other
Volatile memory functions?
Lost
Retained for life of backup battery
Other
Upon restoration of power does the controller:
Auto-reboot without operator intervention? Yes
Automatically reset/synchronize the clock? Yes, internal clock synchronizes with other controllers in the system.
Update all monitored functions? Yes
Generate an alarm if backup battery is dead? No
Upon network or communications failure does controller:
Continue to operate standalone? Yes
Operate with last global settings or user-specified value? N.A.
Do broken network segments continue to communicate within the remaining segment?
(Note: May depend on proper termination of segments for higher speed networks.)
Yes. When the secondary network is broken, a token-based peer-to-peer system generates a second token to operate the bus as two peer-to-peer systems.
Does network automatically reconfigure upon restoration? Yes
Does network store 'loss of communications' alarm with time of event? Yes
Additional Information (optional)
Self Test Diagnostics
Does controller have internal self-test diagnostics to check:
Processor failure? Yes
Internal hardware failure? Yes
Open/shortened sensor? No
Others?
 
Control Enclosure ABS Plastic Housing
Power Supply Required
Voltage 24 Vac
VA 4 VA

DNT-T305: 5VA(65VA with BOs fully loaded).
Surge Protection 2400 Volt Transient on network terminals.
Underwriters Laboratories UL 916 PAZX (Energy Management)
FCC Part 15, Sub-Part B, Class B
CE 89/336/EEC
LonMark Certified
Yes
No
No - but LonWorks compatible
Information not provided
BACnet (BTL) Certified
Yes
No
Not submitted for testing
Information not provided
Other