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Application
The LMD8000 is a 2-8 phase fully actuated NEMA controller unit which can be used in isolated, interconnected or closed loop system applications.
The LMD8000 can be programmed for variety of sequences, including single ring, dual ring and combinations of single and dual ring. Dual ring phase pairs can be reversed during specified cycle/split combinations for pattern related lead/lag operation.
Time base coordination is available in all standard units. Interconnect based coordination, preemption and applications requiring additional I/O (such as additional detector inputs) require the optional Aux I/O board.
The LMD8000 is capable of direct dial (ext. modem) or closed loop system operation using communications over a 2 pair TDM FSK voice grade link.
Description
The LMD series features a menu driven format with a keyboard and a 40–column by 4–row liquid crystal display. The menu format is simple to use and precludes the need for programming tables and keystroke procedures.
The front panel swings down for easy access. A removable information memory card is provided which stores all programmed data and real time information. Since data remains with the card, it can be removed from one unit and placed in another, effectively transferring all data and time of day, day of week, etc.
Addition of the optional communications board allows the LMD8000 to be used in the LM closed loop system.
The LMD8000 meets or exceeds the requirements of NEMA standards TS1 - 1983 parts 13 and 14.
Operation
The LMD8000 can directly plug into any NEMA compatible cabinet.
The LMD8000 is easily programmed using menu format procedures, help screens and special time saving on-board plans ready-made programs.
The run mode displays are rich in descriptive status information, including phase and interval status, coordination status, input/output status, communications status, etc.
The LMD8000 can interface with LMNE event logging conflict monitors to allow remote uploads of time–stamped monitor message logs. These provide specific information on monitor–initiated intersection failures as well as other significant events.
Using the LM system computer software, the unit can be programmed by computer via cable.
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