DDC Online direct digital controls
Automated Logic - WebCTRL  


Primary Control Unit
Date Last Saved: 4/1/2004 1:05:27 PM

Product Name(s): ME-LGR25; ME-LGR200
Product Description: ME LGR is a multi-equipment controller with a high-speed BACnet router.
Product Application(s): Multi-equipment capabilities support general HVAC applications including complex central plants. 10/100Base-T Ethernet ideal for critical control applications. 10/100Base-T Ethernet allows modules to serve as a BACnet router between BACnet/IP system backbone and field devices subnetwork. Native BACnet communications to field devices with ARCNET 156 kbps or BACnet MS/TP network. Protocol translator package allows the ME-LGR controllers to serve as a gateway between BACnet and proprietary networks.
Point Quantity Characteristics
Analog Input (AI): N.A.
Digital Input (DI): N.A.
Universal Input (AI or DI): see below Available through expansion cards
Analog Output (AO): see below Available through expansion cards
Digital Output (DO): see below Available through expansion cards
Universal Output (UO): N.A.
A/D Converter Resolution
8 bit
10 bit
12 bit
16 bit
Other N.A.
D/A Converter Resolution
6 bit
8 bit
10 bit
No Analog Output
Other N.A.
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
Other N.A.
Indicating status LED on each output?
AO and DO
AO Only
DO Only
Other N.A.
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 Up to 192 points can be added using six MEx or MX expansion modules. MEx expansion modules can be mounted up to 100 feet away from the controller.
Expansion Device Model #AIDIUIDOAOUOOther
MX040 4 0 0
MX080 8 0 0
MX0160 16 0 0
MX0320 32 0 0
MX400 0 0 4
MX440 4 0 4
MX4106 10 6 4
MX4106p 10 0 4 6 configurable pneumatic points
MX800 0 0 8
MX880 8 0 8
MX8102 10 2 8
MX1600 0 0 16
MX16160 16 0 16
Network Ports, Protocol(s), and Speed(s) Supported
(Note: See 'Architecture' for network details)
(1)-10/100 Base-T Ethernet port for BACnet/IP or BACnet/Ethernet communications.

(1)- EIA-485 port for BACnet ARCnet 156 kbps communication.

(1)- EIA-232/EI-485 configurable port for third party protocols or BACnet MS/TP (9600 bps - 78.6 kbps).

(1)- EIA-232 port for thrid party protocol support.
External Communication Ports, Speeds and Access Devices (1)-Local access port for system start-up and troubleshooting.

Rnet port for RS room sensors and BACview6 local operator interface.
Additional Information (Optional) Supports third party protocols through custom module drivers.
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)
Zone-Based Interface Access The BACview 6 a local interface keypad device and supports the following features:

* Rnet capable device supported on the SE6104, ME Line, and WebZone
* Up to 2 BACviews on each Rnet (referencing the same control program)
* 4 x 40 screen display size
Zone Interface Hardware
Zone-Mounted touchpad (thermostat or stand-alone display)
HID (proprietary device)
PDA (3rd party HID, with software)
*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)
Microprocessor(s) 32-bit Motorola Power PC microprocessor with cache memory, Ethernet controller, 32-bit serial communication co-processor, ARCNET communication co-processor and I/O expansion CAN co-processor.
Clock Type
Powered, battery-backed
Battery powered
Powered, no battery backing
Clock Synchronization Time synchronization occurs periodically through broadcasts from the WebCTRL server, and from the BACnet Router on each network segment.
Volatile Memory (RAM) Capacity Module only contains non-volatile and flash memory.
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)* 16 MByte non-volatile battery-backed SDRAM (with 12 MBytes available for use), 8 MByte Flash memory, 32-bit memory bus.
Non-Volatile Memory Uses
Data / Trends / Alarms / Calculation Storage
Configuration / Parameter Storage
Control Programming Storage
Controller Operating System
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? Information Not Provided.
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? Yes.
When full, does controller automatically send up trend data, overwrite data, or stop logging data? The module can be configured to stop, deliver, or overwrite
Programming Method(s) ME-LGR Line controllers are fully graphically programmable using the Eikon graphical programming software.
Resident vs Non-Resident Program Execution All graphical programs reside in the controller.
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.)
Additional Energy Management functions are resident at SI
Additional Programming Functions
DDC Loops (P, PI, PID) Available through custom Eikon programming.
Automatic PID Tuning Feature No
Automatical-Dial Alarm Support Yes
Does controller perform multiple retries and buffer/store alarm until connection is made? Yes
Are multiple destinations possible? Yes
Upon controller power loss or hardware failure:
Are network communications affected? Yes (if module is serving as a router to ARCnet, that route would be lost.
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 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? Yes.
Automatically reset/synchronize the clock? Yes.
Update all monitored functions? Yes.
Generate an alarm if backup battery is dead? Yes.
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? Yes.
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 Aluminum cover. Removable screw terminal blocks.
Power Supply Required
Voltage 24 Vac ± 10%, 50 to 60Hz or 26 Vdc ± 10%, 10W.
VA 24 VA
Surge Protection Surge and transient protection circuitry for power and communications.
Underwriters Laboratories UL 916 (Canadian Std. C22.2 No. 205-M1983
FCC Part 15-Subpart B-Class A
CE Yes
LonMark Certified
No - but LonWorks compatible
Information not provided
BACnet (BTL) Certified
Not submitted for testing
Information not provided