Seiko QT-7800 Series Operating Manual
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Seiko QT-7800 Series Operating Manual

Seiko QT-7800 Series Operating Manual

Yearly programmable timer
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YEARLY PROGRAMMABLE TIMER
QT-7800 SERIES
Thank you for purchasing SEIKO Yearly Programmable Timer
QT-7800 Series.
Before using your SEIKO Yearly Programmable Timer, please
read this manual carefully for its proper use and care.
Please keep this manual handy for ready reference.

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Summary of Contents for Seiko QT-7800 Series

  • Page 1 YEARLY PROGRAMMABLE TIMER QT-7800 SERIES Thank you for purchasing SEIKO Yearly Programmable Timer QT-7800 Series. Before using your SEIKO Yearly Programmable Timer, please read this manual carefully for its proper use and care. Please keep this manual handy for ready reference.
  • Page 2 －CAUTION－ (1) This manual is the property of SEIKO and may not without the express written consent of SEIKO be copied or reproduced in any form, in whole or in part, or used for any purpose other than that for which it is supplied.

  • Page 3: Table Of Contents

    13.2 Checking of Network Operation Status 14. TIME CORRECTION 14.1 Time Correction with GNSS (when GNSS receiver [GNS-300] is connected) 15. QT-7800 SERIES I/F 15.1 Serial Output Signal 15.2 Connector Pin Layout of GNSS Receiver GNS-300 16. LEDS ON FRONT PANEL 16.1 Output Monitor lamps...
  • Page 4 17.9 Connection of GNSS Receiver 17.10 NETWORK CONNECTION 18. TROUBLES YOU CAN SOLVE YOURSELF 19. BATTERY REPLACEMENT 20. REMARKS ON DAILY CARE AND MAINTENANCE 20.1 Replacement of Fuse 20.2 Care of Enclosure 21. WARRANTY 22. SPECIFICATIONS QT-7800 Series Yearly Programmable Timer Options...

  • Page 5: Safety Precautions

    Then call your SEIKO dealer or agent for inspection and servicing. If the Yearly Programmable Timer (water, chemicals) is used again without being reconditioned, an electric shock or fire may result.
  • Page 6 The grounding work is required to be of Class D or higher rating, and grounding shall be undertaken by a licensed electrician. Prohibition For fuse replacement service, contact your SEIKO dealer or agent. Do not against unauthorized attempt the fuse replacement by yourself unless you are qualified for the job.
  • Page 7 ●Instructions to the engineering outfit For the engineering outfit WARNING Precautions on installation work The Yearly Programmable Timer is designed for indoor use, and must not be installed outdoors. Otherwise, rainwater may infiltrate into the product to cause Selection of electric shock or fire accident.

  • Page 8: Overview

    A dedicated GNSS receiver (GNS-300) can be connected to the Yearly Programmable Timer to correct the inner clock automatically on a regular basis. In adition,QT-7800 Series is equipped with a time server function as standard that can bring the time of secondary clocks,computers and other devices on the network in sync with the time of QT-7800 Series.

  • Page 9: List Of Products

    ５．LIST OF PRODUCTS Models with 1 secondary clock circuit QT-78101 Drives up to 30 secondary clocks QT-78102 Drives up to 30 secondary clocks Models with 2 secondary clock circuits QT-78201 Drives up to 60 secondary clocks QT-78202 Drives up to 60 secondary clocks Models with 3 secondary clock circuits QT-78301...

  • Page 10: Nomenclature And Functions (Front Panel)

    Secondary clock monitor Monitors for secondary clocks No.1 (left) and No.2. No secondary clock monitor is provided for QT-7800 Series. Hand adjuster switch for secondary clock monitor Sets and stops hands of secondary clocks. ＊”Purpose of Use” card ＊USB connector “B”...

  • Page 11: Nomenclature And Functions (Inside Parts)

    7. NOMENCLATURE AND FUNCTIONS (INSIDE PARTS) Keeps front panel open during Stay installation and wiring works. Turns ON/OFF AC power Power switch supply. Secondary clock Input/output monitor terminal block Adjusts hands of EX.) QT-7820X secondary clocks by turning a wheel on rear side.

  • Page 12: Nomenclature And Functions (Programmable Timer)

    8. NOMENCLATURE AND FUNCTIONS (PROGRAMMABLE TIMER)

  • Page 13: Time/Calendar Setting

    9. TIME/CALENDAR SETTING 9.1 Powering-Up Open the front panel to turn ON the power switch. Once the power switch is turned OFF, wait at least for 10 seconds to turn ON the power again. As the power switch is turned ON, following display appears on the digital display. 9.2 Time Setting Set the mode switch to Time/Day Adjust.

  • Page 14: Time Setting For Clock Monitors

    9.3 Time Setting for Clock Monitors (1) Set the hand adjuster switches for all the clock monitors to STOP. (2) Set the times of all the clock monitors and secondary clocks to an identical time. To set the time of the master clock monitor, open the movement cover, and turn the wheel with fingers.

  • Page 15: Calendar Setting

    9.4 Calendar Setting Set the mode switch to Time/Day Adjust. Press FUNC to show the flashing calendar display. “Year” is represented by the last two digits. (1) Year setting ＋ － Keeping pressed will quickly Press SET to show the flashing year digits. advance or decrease the digits, respectively.

  • Page 16: Normal Time Mode

    １０．NORMAL TIME MODE While in normal use, set the mode switch to Normal Time With each press of FUNC in the Normal Time mode, the time, calendar, time elapsed from the previous correction, operation condition of the NTP server, version No. of the firmware are shown in order. 時刻表示...

  • Page 17: Time/Day Adjust Mode

    １１．TIME/DAY ADJUST MODE Set the mode switch to “Time/Day Adjust” to set the time and calendar. Following functions are provided for the Time/Day Adjust mode. Press to show each function in the FUNC order shown below, and press to activate the selected function. FUNC Time setting Calendar setting...

  • Page 18: Time Setting

    11.1 Time Setting Press FUNC to show the flashing time display, and press SET to activate the time setting function. The hour digits start flashing, and the second digits are reset to “00”. (1) Hour setting ＋ － Press to set the hour. ＋...

  • Page 19: Time Difference Setting

    11.3 Time Difference Setting UTC (Coordinated Universal Time) is the international standard time that corresponds to the time of the United Kingdom when the daylight saving time is not in effect. Set the time difference of the country or city where the Yearly Programmable Timer is used. The time difference can be set within the range from “-12:00”...

  • Page 20: Time Correction Setting

    11. 4 Time Correction Setting 11. 4. 1 External Synchronization Input (30-Sec. Polarized Signal) ＋ － Press FUNC to show the time correction setting display. Then, press to show the following display, and press SET. When a 30-sec. polarized signal is connected to the external input terminal, “0” is displayed. “0”...

  • Page 21: External Synchronization Input (Rs-422)

    11. 4. 3 External Synchronization Input (RS-422) When time correction is started by pressing SET (the clock is kept in constant sync with the input time while this time correction method is selected): ② When UTC (Universal Coordinated Time) is shown: ①...

  • Page 22: Program/Review Mode

    12. PROGRAM/REVIEW MODE Set the mode switch to Program/Review. The Program mode has four functions from “Fn-01” to Fn-04”, and the Review mode has two functions of “Fn-12” and Fn-14”. Press FUN C to show each function, and press SET to activate the selected function. The programs set and checked here should be created using the computer software.

  • Page 23: Review Of Weekly Program (Fn-02)

    (3)-1 Review of Program (when the channel is engaged for Time Signal) ＋ － Press to select the desired channel, and press SET. If the channel is engaged for Time Signal, the duration of Time Signal and the rise time of the amplifier are shown.
  • Page 24 (2) Selection of channel ＋ － Press to show the channel one by one. A is displayed when the channel is engaged for Time Signal, and B is displayed when it is engaged for “Keep” (engagement for a long duration of time). Neither A nor B is displayed when the channel is disengaged.

  • Page 25: Review Of Yearly Program (Fn-03)

    12.3 Review of Yearly Program (Fn-03) Press FUNC to show “Fn-03” display, and press SET. The flashing current month and date, and the program No. designated in the yearly program are shown. ＋ － , and the Program No. for the next date or the previous date is displayed, Press respectively.

  • Page 26: Importing Program From Usb Memory (Fn-12)

    12. 5 Importing Program from USB Memory (Fn-12) Import the Program Setting File created on the PC to the Yearly Programmable Timer from the accessory USB memory. Press FUNC to show “Fn-12” display, and press SET . (1) Inserting USB memory Insert the USB memory into the USB connector “A.”...

  • Page 27: Errors And Remedies In Setting Programs

    12. 7 Errors in Setting Programs For the errors that occur during import and export of the program, refer to the table below. Display of Error No. 21 Error No. Error descriptions Remedies USB memory is not inserted into Insert USB memory included with Yearly connector of Yearly Programmable Programmable Timer into connector.

  • Page 28: Network Connection

    13. NETWORK CONNECTION QT-7800 Series is equipped with a time server function that can bring the time of secondary clocks, computers, and other devices on the network into sync with the time of QT-7800 Series. Specifications of time server function...

  • Page 29: Checking Of Network Operation Status

    13. 2 Checking of Network Operation Status Press when the mode switch is set to Normal Time to show “ntP.” FUNC The operation status of the network is checked and displayed every 10 seconds. The network is operating normally when “0” is displayed as shown below. The time server function will not operate during a power failure.

  • Page 30: Qt-7800 Series I/F

    15. QT-7800 Series I/F 15.1 Serial Output Signal (1) Output format and communication settings Output format RS-422 Communication settings Time data consisting of year (last two digits), month, date, day-of-the-week, hour, minute and seconds is output every second. 1. Transmission rate 2,400 bps 2.

  • Page 31: Connector Pin Layout Of Gnss Receiver Gns-300

    Output data timing ５～１０ｍｓ 5 ~ 10 ms 5 ~ 10 ms ５～１０ｍｓ Timing Time/calendar Ｎ秒データ J.T. data (N second) data ▲ ▲ Ｎ－１秒 Ｎ秒 N-1 Seconds N seconds 15. 2 Connector Pin Layout of GNSS Receiver GNS-300 GNSS Receiver GNS-300 (Round receptacle connector 8-pin female) Pin No.

  • Page 32: Installation

    17. INSTALLATION WARNING Prohibition against Never attempt any of installation work, electrical engineering, and any of the unauthorized jobs instructed to the engineering outfit ("Installation Instructions"). All of installation and these jobs must always be commissioned to your engineering outfit because electrical engineering work they involve electric shock hazards, fire hazards and falling hazards.

  • Page 33: Installation Work

    For the engineering outfit 17.2 Installation Work To install the Yearly Programmable Timer, use four φ6 mm~8 mm installation bolts to fix it securely. When mounting it on to the concrete wall, use AY plugs and bolts. Mounting hole drilling template included with the product is convenient in such case.

  • Page 34: Connection Of Power Supply And Secondary Clocks

    For the engineering outfit 17.4 Connection of Power Supply and Secondary Clocks ・Connect the power supply of AC 110 V 50/60 Hz, and secondary clock according to the illustrations below. AC110V 50/60Hz: ※ AC220V 50/60Hz for AC220V models, Terminal block AC110V Power switch Circuit...

  • Page 35: Connection Of Timer Output

    For the engineering outfit 17.5 Connection of Timer Output ・Refer to the diagram below to connect the timer output and the devices to be controlled. ・Select the wire to be used on the basis of the current consumption of the device to be connected. ・Connect the device securely, using the accessory crimp terminal.

  • Page 36: Connection Of External Synchronization Input

    For the engineering outfit 17.6 Connection of External Synchronization Input ・By connecting the 30-sec. polarized signal for driving secondary clocks of an external master clock to the external synchronization input, the Yearly Programmable Timer operates in sync with the external master clock. ・Even if the external master clock stops operating, the Yearly Programmable Timer continue operating on its own.

  • Page 37: Connection Of Battery

    For the engineering outfit 17.8 Connection of Battery QT-7800 Series uses Ni-Cd battery or Ni-MH battery for driving and controlling secondary clock. Connect the battery after all the installation and electrical works are completed. Before connecting the battery, make sure that the power is not WARNING supplied to the product.

  • Page 38: Network Connection

    For the engineering outfit 17. 10 Network Connection To connect the LAN cable to the connector on the network substrate, wire it as shown in the illustration below, and fix it with a cable tie. Use 100Base/TX for the system clock LAN. Use a LAN cable of Category 5 or higher.

  • Page 39: Troubles You Can Solve Yourself

    GNSS receiver at a place where the whole sky can be seen. If the trouble persists in spite of the troubleshooting procedure above, or if troubles other than cited above occur, call your nearby SEIKO dealer or agent for service. For repair service, contact your nearby SEIKO dealer or agent.

  • Page 40: Battery Replacement

    Recycling of the Ni-Cd battery This product uses a rechargeable battery, which is recyclable. For replacement and collection of the built-in Ni-Cd battery, contact your SEIKO dealer or agent in order to recycle the valuable resources. Ni-Cd Recycling of the Ni-MH battery This product uses a rechargeable battery, which is recyclable.

  • Page 41: Remarks On Daily Care And Maintenance

    For details, consult your SEIKO dealer or agent. ● It is to be understood that SEIKO reserves the right to use substitutions for parts or accessories for the purpose of repair service.

  • Page 42: Specifications

    22. SPECIFICATIONS SPECIFICATIONS QT-78101 QT-78201 QT-78301 Model No. QT-78102 QT-78202 QT-78302 Secondary clock 1 circuit 2 circuits 3 circuits circuits 4.194304 MHz Crystal oscillator frequency Weekly rate of less than ±0.7 seconds (+5℃~+35℃); 0 seconds after time correction Time accuracy Hour, minute, seconds and date;...

  • Page 43: Options

    Insulated crimp terminal; USB memory; and application software Options GNSS Receiver GNS-300; Rack mounting fittings (in accordance with EIA Standard) Option: GNSS Receiver GNS-300 Power supply DC 4.0 ~ 5.0 V 45mA (supplied by QT-7800 Series) Reception Satellite system GPS, QZSS, GLONASS, Galileo section...
  • Page 44 4-3, Fukuzumi 2-chome, Koto-ku, Tokyo, 135-8610, Japan Phone: +81-3-5646-1601 URL https://www.seiko-sts.co.jp I-7480E...

This manual is also suitable for:

Qt-78101Qt-78102Qt-78201Qt-78202Qt-78301Qt-78302

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