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Johnson Controls - Metasys M Series  

UNT110-1 and UNT111-1 ; UNT120-1 and UNT121-1 ; UNT140-1 and UNT141-1

Secondary Control Units
UNT-Series Controllers
Date Last Saved: 1/26/2004 10:59:09 AM

Product Name(s): UNT110-1 and UNT111-1 ; UNT120-1 and UNT121-1 ; UNT140-1 and UNT141-1
Product Description: The UNT Controllers are application-specific, configurable SCUs designed for use with common unitary equipment. The UNTs are polled by an NCM (SI) during normal operation and can also operate standalone. They use pre-programmed control sequences and can be configured as a generic input/output device for basic point monitoring applications. (See also 'Programming')
Product Application(s): The UNT Controller is designed to control packaged rooftop air handling units, unit ventilators, fan coils, heat pumps, and other terminal units serving a single zone or room.
Point Quantity Characteristics
Analog Input (AI): 6 0-10 Vdc

1000 ohm RTD

Resistance (up to 2000 ohm)
Digital Input (DI): 4 Dry contact

24 VAC
Universal Input (AI or DI):
Analog Output (AO): See below 0-10 Vdc (@ 10 mA)
Digital Output (DO): See below Triac switch (24Vac, 0.5A resistive max)

Optional Line Voltage Relay Kit provides 120/240Vac SPDT relays if required.
Universal Output (UO):
Other:
Control Unit Model #:AIDIUIDOAOUOOther
UNT110-1 6 4 8
UNT111-1 6 4 6 2
UNT120-1 6 4 8
UNT121-1 6 4 6 2
UNT140-1 6 4 8
UNT141-1 6 4 6 2
A/D Converter Resolution
8 bit
10 bit
12 bit
16 bit
Other Information not provided.
D/A Converter Resolution
6 bit
8 bit
10 bit
No Analog Output
Other Information not provided.
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?
Integral Damper Actuator?
Can controller accept occupant override from thermostat?
Can controller accept occupancy sensor input?
Expander Boards
Network Ports, Protocol(s), and Speed(s) Supported
(Note: See 'Architecture' for network details)
(1) - Proprietary port to secondary 'N2 Network' @ 9.6 kbps (polling)
External Communication Ports, Speeds and Access Devices (1) - EIA-485 port @ 1.2 kbps. To: ZBI.
Additional Information (Optional) Johnson Controls uses the Opto 22 Optomux protocol, which is open and available to developers upon request.

DX controllers can also control their own I/O LAN (XT bus) with distributed I/O.
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 Available:

MetaStat (thermostat with optional RJ-45 zone interface)

Zone Terminal (Handheld Interface that can also be permanently zone-mounted)
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) NEC 80C652 @ 11 MHz
Clock Type
Powered, battery-backed
Battery powered
Powered, no battery backing
None
Other
Clock Synchronization Clock time on all devices on the N2 network is synchronized daily by the lowest-numbered NCM (SI).
Volatile Memory (RAM) Capacity 32K RAM
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) N/A
Battery Life N/A
Backup Battery Operating Time N/A
Non-Volatile Memory Capacity (EEPROM/Flash)* 8K EEPROM
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? Not Applicable
What is the controllers role in trending? None. Trend points data is called by the SI (NCM) and stored temporarily before being archived at the OWS.
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? Not Applicable
Programming Method(s) Requires HVAC Pro for Windows, a menu-based programming/configuration package. HVAC Pro is run on a laptop or workstation PC, and can be directly connected to the controller via the N2 bus, or via the Zone bus using the Cable Pro EIA-232 (9-pin serial) to EIA-485 (RJ-45) communications interface/adapter. A workstation can be used to run HVAC Pro, with most programming and commissioning features available. Only operating parameters can be modified using PMI User Interface software.
Resident vs Non-Resident Program Execution Standard software is resident in the controller. Custom variations (called 'Side Loops') can be programmed in GPL and reside at the NCM, with commands communicated to the UNT via the N2 secondary network.
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 (See 'Additional Programming Functions' below)
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 The UNT has a 24-hr schedule on-board. Weekend, Holidays, and Exception days are transmitted via the supervisory interface (NCM or N30)
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. An alarm is generated by the NCM when the controller loses power.
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
Update all monitored functions? Yes
Generate an alarm if backup battery is dead? Not applicable
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.)
No
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? Information not provided.
Internal hardware failure? Information not provided.
Open/shortened sensor? Information not provided.
Others?
 
Control Enclosure Multiple enclosure options are available. The AHU board can also be mounted using a DIN rail or direct mount within a field enclosure.
Power Supply Required
Voltage 24 Vac
VA 40 VA (typ.)
Surge Protection Information not provided
Underwriters Laboratories UL 916

UL 864
FCC Part 15, Sub-Part B, Class A
CE
LonMark Certified
Yes
No
No - but LonWorks compatible
Information not provided
BACnet (BTL) Certified
Yes
No
Not submitted for testing
Information not provided
Other