Lathem LTR-512 Installer's Manual
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Lathem LTR-512 Installer's Manual

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LTR4-512
LTR8-512
LTR8-512M
MASTER CLOCK
Installer's Guide

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Summary of Contents for Lathem LTR-512

  • Page 1 LTR4-512 LTR8-512 LTR8-512M MASTER CLOCK Installer’s Guide...

  • Page 2: Installer's Guide

    This Class B digital apparatus complies with Canadian ICES-003. Cet appareil numerique de la classe B est conforme a la norme NMB-003 du Canada. “LTR4-512”, “LTR8-512”, “LTR8-512M”, “Radio Sync”, “LTR MasterLink”, “Terminal are Trademarks of Lathem Time Corp., Atlanta, GA USA ® MS-DOS and Windows are registered trademarks of Microsoft Corporation.

  • Page 3: Table Of Contents

    ELCOME ARTS OUNTING THE ASTER Surface Mount ...3 Semi-Flush Mount...4 Lowering the Display Unit during Testing ...4 Rack Mount ...6 Hidden Power Supply Mount ...7 IRING THE ASTER ETTING UP THE ASTER Enter your Password ...11 Set the Date and Time ...12 Enable the Relays ...13 Choose the Clocks to Synchronize...13 Manual Bell Control ...14...
  • Page 4 [4] = Program Schedules...18 [5] = Schedule Changes...19 [6] = Enable or Disable Circuits...19 [7] = Daylight Savings Time ...19 [8] = Change Schedule ...19 [9] = Sync Clocks ...20 [A] = Program Holidays ...20 [B] = Communications (LTR8-512 and LTR8-512M Only) ...20 [C] = Change Password ...20 [D] = Time Calibration (Available with Firmware Version 5.02) ...21 Auto Bell Test ...22...

  • Page 5: Welcome

    Welcome This Installer’s Guide covers three different Master Clocks. The LTR4-512, the LTR8-512 and the LTR8-512M. All three units are installed and programmed in similar fashions. The main difference between the three units is the LTR4-512 has 4 circuits that can be programmed to ring bells or activate circuits for up to 99 seconds and/or synchronize the time on two types of clock systems (any clock systems types listed in Appendix B, plus RS-485 time sync devices).

  • Page 6: Part List

    Parts List Please check that you received all the parts needed to setup your Master: Master Clock (ready to surface mount) • User’s Guide & Installer’s Guide • Installation Hardware Kit • Package of quick-connects Package of mounting screws and 2 extra cover screws Also included with the LTR8-512 and LTR8-512M 2 L-brackets (ears), used to rack mount •...

  • Page 7: Mounting The Master

    LTRx-512 Installer’s Guide Mounting the Master The Master comes ready to surface mount on the wall. However, you can also install the Master in a standard 19" rack, recess the power supply into the wall or hide the power supply in the floor or ceiling and hang only the display unit on the wall with optional hardware.

  • Page 8: Semi-Flush Mount

    To surface mount the Master Place the Master on its back with the display unit facing up and the keypad to the right • Remove the two screws from just above the display unit • Lift the display unit up and away from you. Note that two rivets at the bottom of the •...
  • Page 9 the ribbon cable plugged in. For Semi-Flush mounts, remove the green communications plug from the back of the display unit, so it can sit flat against the wall. Swing the two hooks on the back of the unit up and hook them over the bottom edge of the back box. You can use the keypad to turn on circuits or program the Master, as well as access the relay and connector blocks inside the back box LTRx-512 Installer’s Guide...

  • Page 10: Rack Mount

    Rack Mount The LTR8-512 and LTR8-512M come with two L-shaped brackets (optional on the LTR4-512) so you can install your Master in a standard 19-inch rack Brackets To install the Master in a 19-inch rack Place the Master on its back with the display unit facing up and the keypad to the right •...

  • Page 11: Hidden Power Supply Mount

    Using these same screws, attach an “L” bracket (or ear) • Repeat to attach the other ear • Mount the unit in the rack • Follow the wiring steps in the next chapter before attaching the box cover • Attach the furnished cover to the power supply using four 6-32 screws (two of these •...
  • Page 12 Note: UL regulations require that you do NOT place high voltage (120V) and low voltage communication cables in the same conduit or through the same knockout holes Follow the wiring steps in the next chapter • For the cleanest installation, mount the display unit over a standard “double gang” 4-inch •...

  • Page 13: Wiring The Master

    Wiring the Master Wire the display panel and power relay units for bell control and clock synchronization. Refer • to the diagrams in Appendix D for more details. Until you complete this part of the wiring, do not turn on the AC power to P4, and keep the power/relay unit’s toggle switch turned “OFF”...
  • Page 14 Your Master can synchronize to other systems if needed. For example, you have a non-compatible time clock that the Master cannot synchronize, but it has a built-in bell ringer. By shorting terminals 7 & 8 on terminal block P1, or terminals 6 & 7 of the communications terminal on the back of the display unit, the Master will immediately reset to 00:00 (midnight).

  • Page 15: Setting Up The Master

    Setting up the Master If you will use the Master to sync clocks, you must first use relays #7 & #8 (terminal block P1) for synching. If you have an LTR8-512 or LTR8-512M and will use a second clock type, you must use relays #5 & #6 (terminal block P2) for those clocks Bell Bell Bell...

  • Page 16: Set The Date And Time

    [3][3][2][5][3][7] Note that if you stop using the keypad for over 5 minutes, you must re-enter your password Set the Date and Time Use Function [1] to set the date and time • Press [0]..[8] [1]..[7] [0]..[8] [0] or [1] LTRx-512 Installer’s Guide PASSWORD: 332537...

  • Page 17: Enable The Relays

    Function [2] to choose the clock type for Clock #1 and/or Clock #2 NOTE: You do not need to enter any special setup to make the Master synchronize Lathem time sync devices (DDC4R, LTR-0, DWA-S and OMC2) using the Master’s RS-485 SYNC...

  • Page 18: Manual Bell Control

    [0]..[9] Manual Bell Control Use Function [3] to manually turn on bell circuits • Press [1]..[8] LTRx-512 Installer’s Guide SYSTEM TYPE CODE: If you are using an LTR8-512 or LTR8-512M and you chose a CLOCK1 type other than 00, you will see SELECT CLK2 CODE: Enter the code for CLOCK2, or 00, if none PRESS [#] IF CORRECT...

  • Page 19: Auto Test The Bells

    Auto Test the Bells Use the Auto Bell Test feature to turn on all bell relays once per minute at the start of each minute. Once you start this function, you can test the continuity of your bell wiring circuits. Use the “hidden code”...
  • Page 20 You cannot choose function [B] directly. To enter Communications, press [#][9][0][0][#] Press SELECT FUNCTION CODE Press [9], then [0][0] Press [0] twice to see [B]=COMMUNICATIONS COMMUNICATIONS SETUP [2] or [9] Enter [2] for 2400 baud or [9] for 9600 baud (9600 is the default) 9600 ENTER TERM ID# Note: If the LTR8-512M will be programmed to call the NIST...

  • Page 21: Functions Defined

    Functions Defined Starts the Programming Functions and Confirms Entries Ends Program functions and/or Cancels Entries (except the “Quick Check”) Quick Check Commands Quick Check commands display system information for about 2 seconds. You can press any of the three quick check keys ([*], [1] or [3]) when the Master is in Clock Mode. Quick Check Command [*] Status Any time you see the time and date, you can press [*] to see the Master status.

  • Page 22: Set Date And Time

    Once you enter your password, you can now program your Master until it detects that you haven’t pressed a key for 5 minutes. After that, you must re-enter your password to keep programming The administrator password 332537 [DEALER] allows you to access advanced functions. Functions that require the Administrator Password are [2] Select Clock Control, [6] Enable Circuits, [7] Daylight Savings, and [B] Communications The default user password is 000000.

  • Page 23: Schedule Changes

    2-digit “country code”, your LTRx-512 will automatically adjust for daylight savings time. If your nation does not appear in the Country Code list, you can choose code ‘00’ and use Lathem’s LTR MasterLink software to program when clock adjustments should occur Enter your password, then press [#][7][#] Enter your country code from the list in Appendix C or press [9] to see the list.

  • Page 24: Sync Clocks

    [B] = Communications (LTR8-512 and LTR8-512M Only) This function requires the administrator password You cannot choose function [B] directly. To enter Communications, press [#][9][0][0][#] You must enter these same settings for the Master in Lathem’s Terminal Manager or LTR MasterLink software [C] = Change Password Use this function to change the default user password (000000) to a unique 6-digit number to prevent unauthorized access to the LTRx-512’s programming functions.

  • Page 25: [D] = Time Calibration (Available With Firmware Version 5.02)

    [D] = Time Calibration (Available with Firmware Version 5.02) The Crystal Oscillator that provides the Time Base for the Master Clock is optimized for operation at 25’ C / 75’F, where it will exhibit its highest accuracy. Due to natural aging of the crystal and to installation of the Master Clock in locations that do not maintain close temperature control, the frequency of the Time-Base is apt to drift from its calibrated value, causing some deterioration in timekeeping accuracy.

  • Page 26: Auto Bell Test

    1 = FASTER 2 = SLOWER To exit the Time-Base Calibration procedure, press either [#] or [*]. EXAMPLE: During installation, set the Master Clock’s time to match an accurate reference (Cell Phone display, Computer Network Time, WWVB Radio Clock, etc.). At the end of one month, compare the Master’s time against the Reference Time, to determine accuracy.

  • Page 27: Appendix A - Specifications

    See configuration drawings Semi-Flush, Surface, 19" Rack, Hidden Power Supply (some configurations optional) Any two (2) of twenty-four (24) types plus Lathem DDC4R synchronization built-in; See Appendix B. One (1) of twenty-four (24) types plus Lathem DDC4R synchronization built-in; on the LTR4-512 Up to eight (8) zones [less two (2) for each electro- mechanical secondary clock type].

  • Page 28: Appendix B - Daylight Savings Country Codes

    APPENDIX B – DAYLIGHT SAVINGS COUNTRY CODES ALBANIA ANDORRA ARMENIA AUSTRIA AZERBJAN AZORES BAHAMAS BALEARIC ISLANDS BELARUS BELGIUM BERMUDA BOSNIA/HERCGVENA BRAZIL BULGARIA CANADA CHANNEL ISLANDS CHILE CROATIA CUBA CYPRUS CZECH REP DENMARK EASTER ISLAND EGYPT USER-SPEC. DATES Last Sunday in March, 3rd Sunday in October Last Sunday in March, last Sunday in September Last Sunday in March, last Sunday in September First day of April, Last day of September...

  • Page 29: Appendix C - Secondary Clock Type Codes

    APPENDIX C - SECONDARY CLOCK TYPE CODES Type Description SYNCHRONOUS WIRED LATHEM TYPE SS CINCINNATI D10 IBM 77 SERIES SIMPLEX 77 SER SIMPLEX 93-9 SIMPLEX 91-9 SIMPLEX 941-9 SIMPLEX 943-9 SIMPLEX 6310-9231 STANDARD EL D10,D12 STROMBERG 3000 3W MIN IMPULSE/59...

  • Page 30: Wiring Secondary Clocks

    WIRING SECONDARY CLOCKS TYPE 01 - SYNCHRONOUS WIRED TYPES INCLUDE: Lathem Cincinnati Simplex Stromberg All circuits should be fused or protected by a circuit breaker (10Amp maximum) TYPE 02 - THREE WIRE MINUTE IMPULSE (59 TYPES INCLUDE: Lathem Cincinnati Edwards...
  • Page 31 TYPE 02 - TWO WIRE REVERSE POLARITY MINUTE IMPULSE (59 TYPES INCLUDE: Lathem Cincinnati All circuits should be fused or protected by a circuit breaker (10Amp maximum) TYPE 03 - STANDARD ELECTRIC SYNCHRONOUS (*Old Style: Dual Motor) AMERICAN TIME & SIGNAL #X55BHGA801...
  • Page 32 TYPE 04 - STANDARD ELECTRIC TIME AR-2A TWO WIRE DUAL VOLTAGE All circuits should be fused or protected by a circuit breaker (10Amp maximum) TYPE 05 - THREE WIRE MINUTE IMPULSE (58 All circuits should be fused or protected by a circuit breaker (10Amp maximum) LTRx-512 Installer’s Guide MIN.) Wiring Diagrams...

  • Page 33: Type 06 - Synchronous Wired

    All circuits should be fused or protected by a circuit breaker (10Amp maximum) TYPE 07 - DUKANE 24F200 DIGITAL CLOCKS NOTE: THIS SELECTION IS NOT SUPPORTED ON THE LATHEM LTR8-512 OR LTR4-512 SERIES. CORRECTION FOR DUKANE 24F200 DIGITAL CLOCKS IS AVAILABLE ON THE DUKANE 24A715 SERIES MASTER CONTROL WITH SOLID- STATE RELAYS.
  • Page 34 TYPE 08 - RAULAND 2410 DIGITAL CLOCKS (24VAC and 115VAC) All circuits should be fused or protected by a circuit breaker (10Amp maximum) All circuits should be fused or protected by a circuit breaker (10Amp maximum) TYPE 09 - SIMPLEX 59 TYPE 10 - SIMPLEX 45 TYPE 27 -...

  • Page 35: Edwards Dual Motor

    TYPE 11 - EDWARDS DUAL MOTOR All circuits should be fused or protected by a circuit breaker (10Amp maximum) TYPE 12 - CINCINNATI ‘D6’ CLOCKS All circuits should be fused or protected by a circuit breaker (10Amp maximum) LTRx-512 Installer’s Guide Wiring Diagrams...

  • Page 36: Electronic Coded Clocks

    ELECTRONIC CODED CLOCKS TYPE 14 Clocks run normally with 120 VAC power. For any bells or clock correction, the generator prestart relay (SK1) first turns on for the signal-generator to reach frequency. SK1 turns on at the 00 second after a programmed time or manual bell time. Then relay SK2 turns on for 3 seconds, from the 10 the 13 second, to apply the generator signal (coded cup start signal) onto the 120 VAC.

  • Page 37: Straight Frequency

    TYPE 15 - STRAIGHT FREQUENCY Clock correction and bell circuit operations are generated by sequentially applying various frequencies onto the 120 VAC. Each bell and clock correction circuit has its own frequency. Each bell and clock correction circuit has a receiver circuit that applies the associated bell or clock frequency (3510 Hz normally used for clock signals).
  • Page 38 TYPE 16 - THREE WIRE MINUTE IMPULSE (59 MIN) WITH 12-HOUR CORRECTION TYPES INCLUDE: Simplex All circuits should be fused or protected by a circuit breaker (10Amp maximum) TYPE 16 - TWO WIRE REVERSE POLARITY MINUTE IMPULSE (59 MIN) WITH 12-HOUR CORRECTION 24 V All circuits should be fused or protected by a circuit breaker (10Amp maximum) LTRx-512 Installer’s Guide...
  • Page 39 TYPE 17 - STANDARD ELECTRIC TIME AR-2 TWO WIRE DUAL VOLTAGE All circuits should be fused or protected by a circuit breaker (10Amp maximum) TYPE 17 - STANDARD ELECTRIC TIME AR-3 THREE-WIRE IMPULSE All circuits should be fused or protected by a circuit breaker (10Amp maximum) LTRx-512 Installer’s Guide Wiring Diagrams...

  • Page 40: National Synchronous Wired

    TYPES INCLUDE: Stromberg Lathem NOTE: Lathem type SS wall clocks can run according to the above signal operation if modified to reference the minute and second hands to HH:57:16 (versus HH:59:00) and the hour hand to 12 o'clock versus 6 o'clock.
  • Page 41 TYPE 20 - THREE WIRE MINUTE IMPULSE (44 All circuits should be fused or protected by a circuit breaker (10Amp maximum) TYPE 21 - CINCINNATI ‘D1’ All circuits should be fused or protected by a circuit breaker (10Amp maximum) LTRx-512 Installer’s Guide MIN.) Wiring Diagrams...
  • Page 42 TYPE 22 - DUKANE SYNCHRONOUS WIRED All circuits should be fused or protected by a circuit breaker (10Amp maximum) TYPE 23 - CONDOR DIGITAL CLOCKS (Model 2412) TYPES INCLUDE: Condor If the digital clocks lose sync with the LTRx-512, then you can use function [9]=SYNC CLOCKS to re- sync them.
  • Page 43 LTRx-512 Installer’s Guide Wiring Diagrams TYPE 23 - CONDOR DIGITAL CLOCKS (Model 2422) TYPES INCLUDE: Rauland 2422 If the digital clocks lose sync with the LTRx-512, then you can use function [9]=SYNC CLOCKS to re- sync them. All circuits should be fused or protected by a circuit breaker (10Amp maximum)
  • Page 44 LTRx-512 Installer’s Guide Wiring Diagrams TYPE 23 - CONDOR DIGITAL CLOCKS (BAR-AC-4412) If the digital clocks lose sync with the LTRx-512, then you can use function [9]=SYNC CLOCKS to re- sync them. All circuits should be fused or protected by a circuit breaker (10Amp maximum)

  • Page 45: Edwards Synchronous Wired Clocks - Type E1

    LTRx-512 Installer’s Guide Wiring Diagrams TYPE 24 - EDWARDS SYNCHRONOUS WIRED CLOCKS - TYPE E1 All circuits should be fused or protected by a circuit breaker (10Amp maximum)

  • Page 46: Fig. D1 - Terminal Block 'P4

    APPENDIX D - WIRING DIAGRAMS WIRING THE LTRx-512 FOR 120VAC (nom.) OPERATION 120 VAC All circuits should be fused or protected by a circuit breaker (10Amp maximum) WIRING THE LTRx-512 FOR 220/240VAC (nom.) OPERATION 220/240 VAC All circuits should be fused or protected by a circuit breaker (10Amp maximum) LTRx-512 Installer’s Guide Fig.

  • Page 47: Fig. D2 - Typical Signal Device Wiring

    All circuits should be fused or protected by a circuit breaker (10Amp maximum) Voltage IN Zone 8 CKT 8 CKT 5A & 5B Operate Together. You CKT 5A & 5B Operate Together. You may may use either of these circuits for use either of these circuits for bells.

  • Page 48: Fig. D3 - Computer Cable

    LTRx-512 Installer’s Guide Fig. D3 - COMPUTER CABLE (For Front Access Port) (LTR8-512 and LTR8-512M Only) Fig. D4 - RS-232 CABLE (for permanent connection to the Communications Terminal Block) (LTR8-512 and LTR8-512M Only) Wiring Diagrams...

  • Page 49: Fig. D6 - Ltrx-512 Used As Slave To Allow 30 Extra Rs-485

    Fig. D5 - SYNCHING UP TO 60 RS-485 TIME SYNC DEVICES RS-485 RS-485 MODEM RS-232 HOST COMMUNICATIONS LTR8-512 & LTR8-512M Only Notes: Up to 30 RS-485 Data Sync Devices (DSDs) can be connected to the Data Sync port. Since the SYNC IN port can send as well as receive, 30 extra devices can be connected.

  • Page 50: Fig. D7 – Communication Terminal Block

    Fig. D7 – COMMUNICATION TERMINAL BLOCK NOTES: 1. Twisted-pair (Cat-3/Cat-5) wire connects directly to Terminal Block; up to 2 wires per position 2. Pulse-sync input is same as provided in power supply. One (1) second (min.) dry-contact switch closure across terminals causes Master to reset time to 12:00AM of nearest date 3.
  • Page 51 Use the six (6) connections as follows: RS-485 Sync Time Device Connection Sync In: Terminal block pair used to receive RS-485 synchronization from another Lathem Master • product or radio sync device, or transmit the LTRx-512’s own sync commands to up to 31 RS-485...

  • Page 52: Fig. D8 - Power Supply Terminal Blocks

    Fig. D8 - POWER SUPPLY TERMINAL BLOCKS NOTES: 1. Circuits CKT1...CKT4 designate bell controls. Circuit pairs CKT5/CKT6 and CKT7/CKT8 can function as clock synchronization circuits or as bell controls (Note: CKT1…CKT4 do not exist on the LTR4-512. Instead use CKT5…CKT8 which are indicated related to the LEDs on the Display Unit numbered 1-4).

  • Page 53: Appendix E – Install The Optional Modem

    APPENDIX E – INSTALL THE OPTIONAL MODEM Installation of the optional internal modem should be performed by a trained and competent electronics technician. Follow these steps; Turn off the power to the Master Clock. You can either access the on/off switch inside the Power Supply Box or turn off the power at the source.

  • Page 54: Appendix F - Connecting The Ltr-Rss Remote Schedule Selector

    APPENDIX F – Connecting the LTR-RSS Remote Schedule Selector The “Remote Schedule Selector” is an accessory for the LTR8-512 Master Controller and allows an Operator to select one (1) of the eight (8) possible schedules stored in the Master Controller [or No Schedule] for immediate activation.

  • Page 55: Installation

    INSTALLATION To install the Remote Schedule Selector, • Remove the RSS from it’s package and locate the four (4) conductor connector (upper left) and the dip switch (bottom center) on the back of the circuit board. • Set the hidden Address Selector dip switch to match the Master’s Programmed Address (default = Code 65) and the Master Clock’s baud rate.

  • Page 56: Installation Detail

    LTRx-512 Installer’s Guide Connecting the LTR-RSS INSTALLATION DETAIL...

  • Page 57: Operational Description

    OPERATIONAL DESCRIPTION To use the Remote Schedule Selector, the Operator will first select, via the Rotary Switch, which of the Schedules is to be made active. The ‘OFF’ position may be used to de-activate all schedules Positions ‘1’ to ‘8’ may be used to select a single Schedule to be made ‘Active’ The ‘INQUIRE’...

  • Page 58: Appendix G - Connecting The Ltr-Gps Satellite Receiver / Synchronizer

    APPENDIX G – Connecting the LTR-GPS Satellite Receiver / Synchronizer Lathem’s LTR-GPS is a Global Positioning Satellite receiver using 12-channels to access the accurate date and time signal transmitted each second by 24 satellites in geosynchronous orbit around the globe.

  • Page 59: Appendix H – Power Supply Schematics

    LTRx-512 Installer’s Guide Power Supply Schematics APPENDIX H – POWER SUPPLY SCHEMATICS LTR8-512 / LTR8-512M LTR4-512 (C) 2000 LATHEM TIME CORP. (C) 2000 LATHEM TIME CORP. VMM7086 REV. D VMM7086 REV. D...
  • Page 60 If you experience trouble with this equipment (Modem), please contact Lathem Time Customer Service at (800) 241-4990 for repair/warranty information. If your equipment is causing harm to the telephone network, the Telephone Company may request that you disconnect the equipment until the problem is resolved.
  • Page 61 No warranties are given with respect to products purchased other than from Lathem or an authorized Lathem reseller and any such products are purchased "as is, with all faults." In no event will Lathem be liable for any direct, indirect, special, incidental or consequential damages arising out of or in connection with the delivery, use or inability to use, or performance of this product.
  • Page 62 Administrator password... 11, 17, 18, 19, 20 Auto Bell Test ...15, 22 Baud Rate...16, 17 Bell schedules... 1, 18, 19 Bell zones...11 Cable connection ...2 Change Password ...18, 20 Change Schedule ...19 Clock sync control ...11 Clock type codes...18 Clock types...1, 18 Communications...1, 15, 16, 18, 20, 23, 47 Communications function...20 Country code ...

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