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Date: 22 April 2018
2000-MTC Master Time/Program Clock  
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2000-MTC Master Time/Program Clock

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2000-MTC Master Time/Program Clock

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Product Description

User programmable

Eight program schedules

64 time events per schedule

Automatic adjustment for daylight savings time

Four-digit time/event display

12-hour AM/PM indication

10 year battery backup

Surface, semi-flush or rack mountable
The Edwards Catalog 2000-MTC Master Time/Program Clock is a compact, microprocessor controlled clock capable of maintaining system time for Edwards digital clocks and many third party secondary clocks. The unit consists of a display unit and power/relay that can be assembled in a surface mount configuration. The display unit has a digital display that shows the date and time and provides programming menus to guide the user through programming and operating modes. A 12 button key pad is used to manually enter commands and programming instructions. The front panel LEDs indicate control relay status. The 2000-MTC uses the Edwards 2000-DCT-REL for timing control.
All wiring to AC power and secondary equipment (clocks, bells, and zone controls) connect to terminal blocks within the power/relay unit backbox using quick connects supplied with the master clock.
Time synchronization is derived from the AC line frequency. The clock automatically detects the selection of 50 or 60 Hz. During power failures, accurate time is maintained by a quartz crystal supported by lithium battery backup. When AC power is restored, the clock's microprocessor calculates the amount of time lost and resynchronizes the secondary clocks. In addition to the hourly and periodic synchronization of secondary clocks, the master clock can automatically adjust for daylight savings time.
The master clock has eight signal circuits, four of which can be designated for clock synchronization. Circuits not used for synchronization can be manually operated by the key pad, or automatically, according to the active schedule. Each relay circuit can be wired to a separate path to control signal devices in specific areas of the facility.The clock can be programmed with up to eight schedules, each containing up to 64 multi-functional events. Schedules can be simultaneously active, providing up to 512 multi-functional events. Each of the 64 events (per schedule) include the hour, minutes, days of the week, desired circuits, and duration of activation. Each event can be set for 1 to 99 seconds or, using start and stop times, separated by 23 hours and 59 minutes. A table of sixteen holidays can be created so that normal schedules can be easily modified and automatically restored at the end of each holiday. The clock also maintains a schedule of up to 16 schedule-change dates to accommodate the automatic activation of seasonal schedule changes. The master clock supports four modes of operation: clock, program, run, and sleep. Clock mode displays the time and date and scans the keypad for user input and the communication ports for external data. Program mode interacts with the user during manual programming procedures, presenting the menus and saving user instructions in protected memory. Run mode executes whenever AC power is applied to the master clock. In run mode, secondary clocks are synchronized and user-programmed bell/zone schedules are carried out. If AC power to the clock is interrupted, the clock enters sleep mode, in which programmed instructions and setup parameters are preserved and only the internal real-time clock remains active to maintain the date and time. The master clock can be programmed from the front panel or from a computer using the supplied software.

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