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Johnson Controls - Metasys Extended Architecture  

LN Series Fan Coil; LN Series Heat Pump; LN Series Rooftop Unit; LN Series Unit Ventilator

Secondary Control Units
LN Series Application Specific Controller
Date Last Saved: 5/11/2005 10:31:08 AM

Product Name(s): LN Series Fan Coil; LN Series Heat Pump; LN Series Rooftop Unit; LN Series Unit Ventilator
Product Description: The LN Series Application Specific Controller is designed for use with LonWorks Network Services systems with a LNS plug-in. The LNS plug-in prompts the user for necessary data and automatically selects a predefined sequence for the specific application.
Product Application(s): Two/four pipe fan coil, with cooling and heating applications up to 3 stages. Single and dual mode heat pumps, modulating valves, and water to refrigerant heat pumps with up to 4 stages of cooling or heating Rooftop units with or without economizer, mechanical stages, modulating valves, and floating outputs with up to 4 stages of heating or cooling. Unit Ventilator with two/four pipe hot water or chilled water coils, direct-expansion, electric heating, and gas fired furnace up to 4 stages.
Point Quantity Characteristics
Analog Input (AI): N.A.
Digital Input (DI): N.A.
Universal Input (AI or DI): 6 Dry Contact
0-10 VDC
4-20 mA
Analog Output (AO): 2 Tri-mode Analog 0-10 VDC

Digital Output (DO): 5 Triac 24 VAC @ 1.0 Amp
0-12 VDC PWM or digital
Universal Output (UO): N.A.
Other: N.A.
Control Unit Model #:AIDIUIDOAOUOOther
LN-FCUL-0 6 5 2
LN-HPUL-0 6 5 2
LN-RTUL-0 6 5 2
LN-UVL-0 6 5 2
A/D Converter Resolution
8 bit
10 bit
12 bit
16 bit
D/A Converter Resolution
6 bit
8 bit
10 bit
No Analog Output
HOA switches provided on each output?
Note: These are also available as an add-on from 3rd party vendors.
Both AO and DO
DO Only
Indicating status LED on each output?
AO and DO
AO Only
DO Only
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 N.A.
Network Ports, Protocol(s), and Speed(s) Supported
(Note: See 'Architecture' for network details)
(1) TP/FT-10, LonTalk, @ 78.6 Kbps
External Communication Ports, Speeds and Access Devices Information not provided
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
Controller Access Devices
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 Information not provided
Zone-Based Interface Access Information not provided
Zone Interface Hardware
Zone-Mounted touchpad (thermostat or stand-alone display)
HID (proprietary device)
PDA (3rd party HID, with software)
Other Information not provided
*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
O&M SupportTAB/Cx Support
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 Information not provided
Microprocessor(s) Neuron 3150, 8 bit; @ 10 MHz
Clock Type
Powered, battery-backed
Battery powered
Powered, no battery backing
Other Information not provided
Clock Synchronization Information not provided
Volatile Memory (RAM) Capacity N.A.
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 N.A.
Is Volatile Memory Supported By Battery? N.A.
Battery Type(s) N.A.
Battery Life N.A.
Backup Battery Operating Time N.A.
Non-Volatile Memory Capacity (EEPROM/Flash)* 64 Kb Flash
Non-Volatile Memory Uses
Data / Trends / Alarms / Calculation Storage
Configuration / Parameter Storage
Control Programming Storage
Controller Operating System
Other APB application
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? Information not provided
Can controller be programmed to 'push' data to archive or are trends 'pulled' from controller? Information not provided
When full, does controller automatically send up trend data, overwrite data, or stop logging data? N.A.
Programming Method(s) LNS plug in prompts user for necessary configuration data and the controller automatically selects the operation sequence from the plug in input, output configuration, and the network variables.
Resident vs Non-Resident Program Execution Resident
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.
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
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 See Below
Additional Energy Management functions are resident at SI
Additional Programming Functions slave operation mode, changeable type Network Variable (NV), frost protection
DDC Loops (P, PI, PID) Information not provided
Automatic PID Tuning Feature Information not provided
Automatical-Dial Alarm Support Information not provided
Does controller perform multiple retries and buffer/store alarm until connection is made? Information not provided
Are multiple destinations possible? Yes
Upon controller power loss or hardware failure:
Are network communications affected? No
Is loss recognized on/by the network and alarm reported? Information not provided
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 Information not provided
Volatile memory functions?
Retained for life of backup battery
Other N.A.
Upon restoration of power does the controller:
Auto-reboot without operator intervention? Information not provided
Automatically reset/synchronize the clock? Information not provided
Update all monitored functions? Information not provided
Generate an alarm if backup battery is dead? N.A.
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.)
Does network automatically reconfigure upon restoration? Information not provided
Does network store 'loss of communications' alarm with time of event? Information not provided
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
Control Enclosure Metal 18 AWG
Power Supply Required
Voltage 24 VAC +/- 15%, 50/60 Hz
Class 2 power supply
VA Maximum: 10 VA
Typical: 5 VA
Surge Protection 1.35 Amp Auto-Reset Fuse
Underwriters Laboratories Yes
LonMark Certified
Yes LonMark Interoperability Guidlines Version 3.3 compliant
No - but LonWorks compatible
Information not provided
BACnet (BTL) Certified
Not submitted for testing
Information not provided
Other LN-FCUL-0 LonMark Functional Profile Fan Coil Unit #8020

LN-HPUL-0 LonMark Function Profile Heat Pump Unit #8051

LN-RTUL-0 LonMark Functional Profile Roof Top Unit #8030

LN-UVL-0 LonMark Functional Profile Unit Ventilator #8080