Tag Archives: TC-3000

TC-3000 related articles and posts

Antennas Mounted on Water Towers Support School’s IP Time Clocks

The school zone flashing beacons in Longview, Texas (pop 85,000) used a paging system to program school signals. Keith Covington, Traffic Signal Supervisor, determined the system “limited us, not only communicating with the clocks but monitoring the clocks”. ELTEC’s SYSTEM 3000 was chosen to centrally program, manage, and monitor each TC-3000 IP time clock (36 total).

Eltec System 3000

Eltec’s SYSTEM 3000 was chosen to centrally program, manage, and monitor school zone signals in 36 locations. A LANG 3000 was mounted at the top of three local water towers.

After reviewing available communication options to the Traffic Center from each LANG 3000 (gateway), it was determined to use the Water Department’s Ethernet connections. By utilizing three water towers, “reaching all our areas without spending a lot of money and without having a monthly bill” was doable according to Keith.

The water tower Ethernet connection is located at base of each tower. To avoid coax signal loss, LANG 3000’s (enclosed in a small cabinet) were installed on the top of the water towers. CAT 5 cable from the tower base to the top provides power and data communication. Doing so eliminated approximately 100 feet of coax cable ensuring maximum transmit power at the antenna. The 1 watt, 900 MHz spread spectrum radio didn’t lose signal strength by doing it this way.

After installing four gateways, one of the LANGs could not ‘see’ one school’s beacons due to hills and trees. Locating the fourth LANG to an intersection controller cabinet with a fiber connection, enabled them to utilize the system’s repeater capability resolving the problem. Two intermediate clocks were programmed to create and support a communication pathway. According to Keith “by installing the LANG in the intersection controller cabinet in the area of communication difficulty, the redirection of repeating signals (clock to clock) came easily when trying to maintain communication back to the Traffic Center.”

The DLPRO 3000 software is “easy to use and user-friendly.” He continues, “Having the capability to connect and monitor each clock individually and quickly determines if lights are flashing with great accuracy. It’s a valuable tool of communication compared to the old system.” Monitoring all clocks at a glance is also an option with the Background Monitor function. With the former paging system, “you couldn’t validate if lights where flashing or not without going directly to the site or someone reporting it.” The SYSTEM 3000 “allows the opportunity to fix problems before they are noticed by the public through the DLPRO 3000 monitoring feature in the software.”

Contact ELTEC at 800.227.1745; sales@elteccorp.com; ELTEC or your local ELTEC Dealer for a SYSTEM 3000 analysis and quote.

Reprinted with permission from IMSA.

System 3000 Network Based Time Clock (IMSA July-August ’10)

ELTEC Introduces Network Based Time Clock

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lang-3000tc-3000a

ELTEC has launched a new program-mable time clock, the TC-3000. Using your available internet/network ac-cess, it provides real-time closed-loop management from a host computer, eliminating the need to send techni-cians for on-site trouble shooting or changing/modifying programs.

The System 3000 (DLPRO 3000 soft-ware, LANG 3000 & TC-3000 time clock) utilizes the internet or private intranet and RF technology eliminat-ing paging or cellular fees. No radio repeaters are required. System com-munication is established over the net-work utilizing a secure dedicated port on the host computer and an on-site local area network gateway (LANG). A spread spectrum RF virtual private network (VPN) is created between the LANG and its’ associated TC-3000 time clocks.

The system provides immediate 2-way communication, real-time monitor-ing and control, displaying clock and LANG status. At any time, a single clock, group of clocks or all clocks can be interrogated to verify status. Email messages are sent to the technician(s) on-call as well as other designated individuals to report low voltage con-ditions, any manual overrides or com-munication faults.

The System 3000 controls the opera-tion of beacons based upon program schedules downloaded by the user into non-volatile memory. All programs are stored in the time clock as well as the LANG. Should there be a system inter-ruption, the flashing beacons continue to operate as scheduled. It operates as a stand alone time based control-ler, allowing it to be used anywhere a time based relay output controller is required.

The TC-3000 time clock has an internal flasher, and it’s equipped with two independent output relays for other needed circuits. Both the TC-3000 time clock and LANG 3000 operate on either 12VDC (solar) or 120VAC.

The DLPRO 3000 software runs on Windows operating systems.

For more information contact ELTEC at sales@elteccorp.com, 800-227-1734 or visit ELTEC’s web site at www.ELTECCORP.com.