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Floor Level Network Controller (FLNC)

Supervisory Interface Devices
Floor Level Network Controller (FLNC)
Date Last Saved: 12/13/2007 8:59:24 AM

Product Name(s): Floor Level Network Controller (FLNC)
Product Description: The FLNC is a Supervisory Interface (SI) device that is similar in memory capacity to the Modular Building Controller (MBC) primary controller, but without on-board I/O capability. The FLNC resides on the primary ALN network, supervises communications, and hosts controllers on the secondary FLN.
Product Application(s): The FLNC can be used as a standalone SI to support secondary controllers or can be paired with newer-generation MEC primary controllers to add custom programming and I/O strategies (the latter similar to the functionality of the MBC, but with fewer options). As a supervisory interface, the FLNC provides central monitoring, control, and global energy management functions for up to 96 secondary control units on the FLN.
Point Quantity Characteristics
Analog Input (AI): N.A. N.A.
Digital Input (DI): N.A. N.A.
Universal Input (AI or DI): N.A. N.A.
Analog Output (AO): N.A. N.A.
Digital Output (DO): N.A. N.A.
Universal Output (UO): N.A. N.A.
Other: N.A. N.A.
A/D Converter Resolution
D/A Converter Resolution
HOA switches provided on each output?
Note: These are also available as an add-on from 3rd party vendors.
Indicating status LED on each output?
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) - Proprietary ('P2') to primary 'Automation Level Network (ALN)' @ 9.6 to 115.2 kbps (peer-to-peer)

(3) - Proprietary ('P1') to secondary 'Field Level Network (FLN)' @ 4.8 kbps (polling)(wired or wireless)
External Communication Ports, Speeds and Access Devices (2) - EIA-232 laptop/PC communication ports with RJ-11 jack @ up to 38.4 kbps. (A modem can be installed on one of these ports).
Additional Information (Optional)
Network Accessing Capabilities via Controller
Controller Access Devices
Zone-Based Interface Access N.A.
Zone Interface Hardware
*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.
Microprocessor(s) Motorola 68302, 16.67 MHz
Clock Type
Powered, battery-backed
Battery powered
Powered, no battery backing
Clock Synchronization A single workstation is designated as the master time clock. This workstation resets all clocks on the field panels and controllers across the network.
Volatile Memory (RAM) Capacity 1 MB; Optional 2MB
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
Is Volatile Memory Supported By Battery? Yes
Battery Type(s) Lithium
Battery Life Information not provided
Backup Battery Operating Time 60 days
Non-Volatile Memory Capacity (EEPROM/Flash)* 2 MB
Non-Volatile Memory Uses
Data / Trends / Alarms / Calculation Storage
Configuration / Parameter Storage
Control Programming Storage
Controller Operating System
Other Information not provided.
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? Yes
How many total trend values can be stored? Trend storage is limited to available RAM.
What is the controllers role in trending? Programming resident within SI gathers and stores trend data on-board. At set intervals, data is sent by the SI to workstation or called by the workstation for archival.
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? Old data is overwritten if controller trend data memory fills before being called by archive workstation.
Programming Method(s) N.A.
Resident vs Non-Resident Program Execution N.A.
Resident Energy Management
Specific Pre-Programmed Algorithms Available
Additional Programming Functions N.A.
DDC Loops (P, PI, PID) N.A.
Automatic PID Tuning Feature N.A.
Automatical-Dial Alarm Support N.A.
Does controller perform multiple retries and buffer/store alarm until connection is made? N.A.
Are multiple destinations possible? N.A.
Upon controller power loss or hardware failure:
Are network communications affected? N.A.
Is loss recognized on/by the network and alarm reported? N.A.
DO and AO response?
Volatile memory functions?
Upon restoration of power does the controller:
Auto-reboot without operator intervention? N.A.
Automatically reset/synchronize the clock? N.A.
Update all monitored functions? N.A.
Generate an alarm if backup battery is dead? N.A.
Upon network or communications failure does controller:
Continue to operate standalone? N.A.
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? N.A.
Does network store 'loss of communications' alarm with time of event? N.A.
Additional Information (optional) N.A.
Self Test Diagnostics
Does controller have internal self-test diagnostics to check:
Processor failure? N.A.
Internal hardware failure? N.A.
Open/shortened sensor? N.A.
Others? N.A.
Control Enclosure N.A.
Power Supply Required
Voltage 120 Vac
VA Information not provided
Surge Protection Provided
Underwriters Laboratories UL 864 UUKL





CSA 22.2 No. 0, 0.4 and 205
FCC FCC Part 15, Subpart B, Class A
CE CISPR 22 Class A

Australian Compatibility Framework
LonMark Certified
No - but LonWorks compatible
Information not provided
BACnet (BTL) Certified
Not submitted for testing
Information not provided

Programming Method(s)

(See also 'Software' Form)

Programmable from an operator workstation or portable operator terminal using proprietary line-based programming package (Powers Process Control Language; or PPCL).


(See also 'Software' Form)

The FLNC supervises scheduling for all secondary controllers.

Energy Management

SI-resident energy management functions/algorithms calculated and performed by this SI. One or more of these choices may be selected. 'No' indicates that it is not available.

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.
SI is not typically used for energy management functions
Other Additional strategies can be programmed as needed.

Specific, pre-programmed algorithms available.

'No' indicates that it is not available.

None (custom programming only)
None (not applicable)
Optimal Start/Optimal Stop
Peak Demand Limiting/Load Shedding
Economizer (enthalpy and dry-bulb)
Additional Energy Management functions resident at individual controllers
Hardware I/O Points None
Additional SI Functions

Automatic-Dial Alarm Support

(See also 'Software' Form)

Does SI perform multiple retries and buffer/store alarm until connection is made? Yes
Are multiple destinations possible? Yes
Upon SI power loss or hardware failure:
Is loss recognized on/by the network and alarm reported? Yes
Upon restoration of power does the SI:
Auto-reboot without operator intervention? Yes
Automatically reset/synchronize its clock? Clock function backed by battery. Clock setting is synchronized at regular intervals by workstation.
Automatically reset/synchronize its secondary network? Yes
Update all monitored functions? Yes
Generate an alarm if backup battery is dead? Yes
Control Enclosure Metal enclosure provided