Lathem DDC2 Series Installation And User Manual

Digital display wall clock

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Installation & user manual (63 pages)

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Summary of Contents for Lathem DDC2 Series

Page 1 Digital Display Wall Clock DDC2 / DDC4 Series Installation & User's Guide...
Page 2 OMNI:CHRON, mini:master, Lathem and the Lathem logo are registered trademarks of Lathem Time Corporation. Other product names mentioned in this manual may be trademarks of their respective companies and are hereby acknowledged. WARNING: Changes or modifications to this product not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.
Page 3: Table Of Contents
Clock Operation ... 1 About this Manual ... 2 Optional Accessories ... 3 Configuring the DDC Series Wall Clock... 4 Setting the DIP Switches - DDC2 / DDC4 Series... 5 DDC2 ... 5 DDC4 ... 5 DIP Switch Settings ... 6 Configuring RS485 Communications - DDC2/4-RS Series ...
Page 4 Setting the Time... 20 Time Formats ... 20 12 Hour Format... 20 24 Hour Format... 20 Appendix A - DDC2-RS / 4-RS Secondary Clock Wiring Diagrams... 21 Stand-Alone (115VAC) ... 21 3-Wire Synchronous (115VAC) ... 22 3-Wire Synchronous (24VAC) ... 23 3-Wire minute Impulse (59 Minute) ...
Page 5 As a Count Down Timer ... 52 Appendix E - LTR-GPS Satellite Receiver / Clock Synchronizer ... 53 Connecting to a Lathem DDC2-RS or DDC4-RS Digital Clock ... 55 Appendix F - Specifications... 56 Appendix G - Warranty ... 57...
Page 7: Introduction
"stand-alone" or to replace many analog secondary clocks that may be hard to find or no longer available. The DDC Series Wall Clocks can be synchronized from the Lathem LTR4-512 or LTR8-512 Master, LTR0 mini:master, Terminal Manager Software or the OMNI:CHRON Time Clock, using an RS485 correction signal.
Page 8: About This Manual
Equipped with a 2-inch or 4-inch display, these models can operate as a stand- alone, a secondary clock to virtually any master controlled system or can be synchronized with the RS485 signal from the Lathem LTR4-512 or LTR8-512 Master, LTR0 mini:master, Terminal Manager Software* or the OMNI:CHRON Time Clock.
Page 9: Optional Accessories
Double Wall Mount Kit for DDC4 Series VSE0052 Mounting Bracket for 3510 Hz Electronic Receiver. (DDC4 only, installer must use optional method to mount Receiver outside the DDC2 if Receiver is used) (Receiver not included) DDC-TC Timer Control Panel to use the DDC2/4 Series as a count up/down timer...
Page 10 1 - Mounting Plate Assembly 8 - #10 Hex Nuts 1 - Mounting Plate Assembly 8 - #10 Lock Washers 4 - #10 Hex Nuts 1 - Mounting Plate Assembly 4 - #10 Screws 8 - #10 Lock Washers 4 - #6 Lock Washers 4 - #6 Hex Nuts Digital Display Wall Clock Guide SAM0626 Kit (left) Includes:...
Page 11: Configuring The Ddc Series Wall Clock
Digital Display Wall Clock Guide Configuring the DDC Series Wall Clock Setting the DIP Switches - DDC2 / DDC4 Series DDC2 Remove the four phillips head screws from the left or the right end cap and remove. Slide the lens and circuit board assembly out of the case.
Page 12: Dip Switch Settings
DIP Switch Settings Table 1 - S1 (1-5) Secondary Clock Correction 0=Closed 1=Open Stand Alone * 3-Wire Synchronous 3-Wire Minute Impulse (59 3-Wire Minute Impulse (59 Standard Electric Synchronous Standard Electric AR-2A - 2-Wire Dual Voltage Standard Electric AR-2 - 2-Wire Dual Voltage Cincinnati D8, Honeywell ST402A, Faraday Synchronous Simplex 59 Simplex 45...
Page 13: Configuring Rs485 Communications - Ddc2/4-Rs Series
Digital Display Wall Clock Guide Configuring RS485 Communications - DDC2/4-RS Series When multiple DDC2 (4)-RS Series Wall Clocks are installed as slave units to either the Lathem LTR4- 512 or LTR8-512 Master, LTR0 Mini-Master, Terminal Manager Software or the OMNI:CHRON Time Clock, the last clock on the line must have a shunt installed over both pins at position J2 (see figure 2, page 9).
Page 14: Battery Installation - Ddc2 / Ddc4 Series
Power Cord Installation - DDC2/4-RS Note: This section refers only to the 115VAC models. Applying power other than 24VAC to models DDC2- RS-24 or DDC4-RS-24 WILL CAUSE DAMAGE and void the warranty. See Appendix B for proper wiring of these models.
Page 15: Ddc4-Rs
(normally green) to the green ground screw located on the inside back of the case. Slide the front panel display back into the case, replace the end cap and secure with the two phillips head screws. Wiring Installation - DDC2/4-RS Series Secondary Wiring The DDC Wall Clock comes with a detachable wiring harness to make installation easier.
Page 16: Replacing An Existing Ddc4 Wall Clock
DDC Series Wall Clock as described above. Board Layout Diagram Fly Lead Jumper Connector Hours Minutes Down Ground Lathem Time Corp. DDC2\4 Beeper Factory Default last clock for RS485 connections Digital Display Wall Clock Guide DIP Switch OPEN (E-PROM)
Page 17: Mounting - Ddc2 / Ddc4 Series
Page 11 Mounting - DDC2 / DDC4 Series The DDC Series Wall Clocks can be mounted directly to a wall, to a single gang outlet box, double hung from the wall or double hung from the ceiling. When deciding where the clock will be mounted, keep in mind that 115VAC power may be required depending on the installation type.
Page 18: Ddc4
» Slide the lens and circuit board assembly back into the case, replace the end cap and secure with the four phillips head screws. DDC4 » After deciding the location where the clock will be mounted, make two marks 12" apart and horizontal.
Page 19: Ddc2
Page 13 DDC2 Note: If mounting near a ceiling, make sure the top of the single gang box is at least 2 1/4" away from the ceiling. Note: Make sure you have at least 10 1/2" of side clearance on one side in order to remove the lens and circuit board assembly.
Page 20: Double Mount - Wall
For single gang box mount Double Mount - Wall DDC2 Requires optional mounting kit (SAM0630) DDC4 Requires optional mounting kit (SAM0625) Tools required for mounting the clock: Flat blade screwdriver Phillips head screwdriver 15/16" open end wrench The double wall mount plate attaches to a double or single gang box installed securely in the wall.
Page 21: Ddc2 (Double Mount - Wall)
DDC2 (Double Mount - Wall) » Remove the four phillips head screws from the left and the right end caps of the two DDC2 clocks and remove. Slide the lenses and circuit board assemblies out of the cases and set aside.
Page 22: Ddc4 (Double Mount - Wall)
DDC4 (Double Mount - Wall) » Remove the two phillips head screws from the left and the right end caps of the two DDC4 clocks and remove. Slide the front panel assemblies out of the cases and set aside. » Place the two DDC4 clocks back to back and secure by inserting a #10 screw through the two key holes and the two lower mounting holes using lock washers and nuts supplied with the mounting kit.
Page 23: Double Mount - Ceiling
Secure the mounting plate securely to the gang box with the proper screws. (not supplied) Note: When mounting DDC2 clocks, the short side of the mounting plate must be parallel to the long side of the clocks. When mounting DDC4 clocks, the long side of the mounting plate must be parallel to the long side of the clocks.
Page 24 Note: At this point, if the DDC2 clocks will be mounted too near a wall on one side to secure the end caps, install the "wall side" end caps now.
Page 25: Ddc4 (Double Mount - Ceiling)
Page 19 DDC4 (Double Mount - Ceiling) Note: Make sure you have at least 16" of side clearance on one side in order to remove the front panel assembly. » Remove the two phillips head screws from the left and the right end caps of the two DDC4 clocks and remove.
Page 26: Setting The Time
Time Formats The DDC2 / DDC4 Series Wall Clocks can be set to display in 12 Hour or 24 Hour format. When in 12- Hour format, a round LED in the upper left corner of the display indicates PM hours. When in 24 Hour format, the hours are displays in Military style.
Page 27: Appendix A - Ddc2-Rs / 4-Rs Secondary Clock Wiring Diagrams
Page 21 Appendix A - DDC2-RS / 4-RS Secondary Clock Wiring Diagrams Note: See Appendix B for DDC2-RS-24 / DDC4-RS-24 wiring. Stand-Alone (115VAC) GRND 115VAC Local AC IN Power AC RTN Hour and Minutes must be set manually. Use of a 9Volt alkaline battery is recommended to avoid resets after power failures.
Page 28: 3-Wire Synchronous (115Vac)
DDC2 / 4-RS Wiring 3-Wire Synchronous (115VAC) 115VAC AC Return From Correction Master Clock Clock will correct minutes hourly at HH:59 and hour and minutes twice daily at 5:59. Wiring applies to secondary wall clocks such as: Lathem type SS Cincinnati D10...
Page 29: 3-Wire Synchronous (24Vac)
Clock will correct minutes hourly at HH:59 and hour and minutes twice daily at 5:59. Wiring applies to secondary wall clocks such as: Lathem type SS Cincinnati D10 Simplex 77 Series, 93-9, 91-9, 941-9, 943-9 Stromberg 3000 Digital Display Wall Clock Guide...
Page 30: 3-Wire Minute Impulse (59 Minute)
DDC2 / 4-RS Wiring 3-Wire minute Impulse (59 GRND 115VAC AC IN Local AC RTN Power 24VDC From Master Clock Clock must be set within 20 minutes of actual time for master to synchronize. Use of a 9Volt alkaline battery is recommended to avoid resets after power failures.
Page 31: 3-Wire Minute Impulse (59 Minute With 12 Hour Correction)
Wiring applies to secondary wall clocks such as: Lathem ISC 3-Wire 12Hour Digital Display Wall Clock Guide Minute With 12 Hour Correction) Simplex 91, 941 DDC2 / 4-RS Wiring Other Clocks Set switches 1-5 of S1 as shown. Indicates depressed side of switch OPEN...
Page 32: Standard Electric Synchronous
DDC2 / 4-RS Wiring Standard Electric Synchronous 115VAC AC Return From Correction Master Clock Clock will correct minutes hourly at HH:59 and hour and minutes twice daily at 5:12. For 24VAC correction, use wiring shown on page 23 Digital Display Wall Clock Guide...
Page 33: Standard Electric Ar-2A 2-Wire Dual Voltage
Clock must be set to actual time. Use of a 9Volt alkaline battery is recommended to avoid resets after power failures. Digital Display Wall Clock Guide DDC2 / 4-RS Wiring Other Clocks Set switches 1-5 of S1 as shown. Indicates depressed side of switch...
Page 34: Standard Electric Ar-2 2-Wire Dual Voltage
DDC2 / 4-RS Wiring Standard Electric AR-2 2-Wire Dual Voltage GRND 115VAC AC IN Local AC RTN Power 24VDC / 48VDC From Master Clock Clock must be set to actual time. Use of a 9Volt alkaline battery is recommended to avoid resets after power failures.
Page 35: Synchronous Wired
23 Wiring applies to secondary wall clocks such as: Cincinnati D8 Faraday Digital Display Wall Clock Guide Honeywell ST402A DDC2 / 4-RS Wiring Other Clocks Set switches 1-5 of S1 as shown. Indicates depressed side of switch OPEN...
Page 36: Simplex 59 Th Minute Dual Motor
DDC2 / 4-RS Wiring Simplex 59 Minute Dual Motor 115VAC AC Return From Correction Master Clock Clock must be set to proper hour. Clock will correct minutes hourly at HH:58. . Use of a 9Volt alkaline battery is recommended to avoid resets after power failures.
Page 37: Simplex 45 Th Minute Dual Motor
For 24VAC correction, use wiring shown on page 23 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring Other Clocks Set switches 1-5 of S1 as shown. Indicates depressed side of switch OPEN...
Page 38: Edwards Dual Motor
DDC2 / 4-RS Wiring Edwards Dual Motor 115VAC AC Return From Correction Master Clock Clock must be set to actual time. Use of a 9Volt alkaline battery is recommended to avoid resets after power failures. For 24VAC correction, use wiring...
Page 39: Standard Electric Ar-3 3-Wire Minute Impulse
Clock must be set to actual time. Use of a 9Volt alkaline battery is recommended to avoid resets after power failures. Digital Display Wall Clock Guide DDC2 / 4-RS Wiring Other Clocks Set switches 1-5 of S1 as shown. Indicates depressed side of switch...
Page 40: National Synchronous Wired
DDC2 / 4-RS Wiring National Synchronous Wired 115VAC AC Return From Correction Master Clock Clock will correct minutes hourly at HH:00 and hour and minutes twice daily at 6:00. For 24VAC correction, use wiring shown on page 23 Digital Display Wall Clock Guide...
Page 41: Th Minute)
11:56. For 24VAC correction, use wiring shown on page 23 Digital Display Wall Clock Guide Minute) DDC2 / 4-RS Wiring Other Clocks Set switches 1-5 of S1 as shown. Indicates depressed side of switch OPEN...
Page 42: Cincinnati D1
DDC2 / 4-RS Wiring Cincinnati D1 GRND 115VAC AC IN Local AC RTN Power 24VDC / 60VDC From COMMON Master Clock Clock must be set within 20 minutes of actual time for master to synchronize. Use of a 9Volt alkaline battery is recommended to avoid resets after power failures.
Page 43: Cincinnati D6, Edwards 2406
Use of a 9Volt alkaline battery is recommended to avoid resets after power failures. Digital Display Wall Clock Guide DDC2 / 4-RS Wiring Other Clocks Set switches 1-5 of S1 as shown. Set switches 1-5 of SW1 as shown.
Page 44: 2-Wire Pulse Alternating (24Vdc)
DDC2 / 4-RS Wiring 2-Wire Pulse Alternating (24VDC) GRND 115VAC AC IN Local AC RTN Power 24VDC From Master Clock Clock must be set within 20 minutes of actual time for master to synchronize. Use of a 9Volt alkaline battery is recommended to avoid resets after power failures.
Page 45: Electronic Coded
Clock will correct minutes hourly at HH:57 and hour and minutes twice daily at 5:57. Digital Display Wall Clock Guide GRAY 3510 Hz Reciever Requires 3510Hz receiver (not supplied) DDC2 / 4-RS Wiring Set switches 1-5 of S1 as shown. Indicates depressed side of switch OPEN...
Page 46: Straight Frequency
DDC2 / 4-RS Wiring Straight Frequency GRND 115VAC AC IN Local AC RTN Power Clock will correct minutes hourly at HH:57 and hour and minutes twice daily at 5:57. Digital Display Wall Clock Guide GRAY 3510 Hz Reciever Requires 3510Hz receiver (not supplied) Page 40 Set switches 1-5 of S1 as shown.
Page 47: 3-Wire Minute) Impulse (58 Minute))
Use of a 9Volt alkaline battery is recommended to avoid resets after power failures. Digital Display Wall Clock Guide Minute) DDC2 / 4-RS Wiring Other Clocks Set switches 1-5 of S1 as shown. Indicates depressed side of switch OPEN...
Page 48: 3-Wire Minute) Impulse (44 Minute))
DDC2 / 4-RS Wiring 3-Wire Minute Impulse (44 GRND 115VAC AC IN Local AC RTN Power 24VDC From Master Clock Clock must be set within 20 minutes of actual time for master to synchronize. Use of a 9Volt alkaline battery is recommended to avoid resets after power failures.
Page 49: Th Minute)
Use of a 9Volt alkaline battery is recommended to avoid resets after power failures. Digital Display Wall Clock Guide Minute) DDC2 / 4-RS Wiring Other Clocks Set switches 1-5 of S1 as shown. Indicates depressed side of switch OPEN...
Page 50: Appendix B - Ddc2-Rs-24 / Ddc4-Rs-24 Wiring
DDC2 / 4-RS -24 Wiring Appendix B - DDC2-RS-24 / DDC4-RS-24 Wiring The DDC2-RS-24 and the DDC4-RS-24 allow for 24VAC supplied from the Master Clock or Power Supply to power it for normal operation. These models can be used in installations where local 115VAC power may not be available.
Page 51: Ddc2-Rs-24 / Ddc4-Rs-24 Wiring
DDC2-RS-24 / DDC4-RS-24 Wiring 24VAC AC Return From Correction Master Clock Digital Display Wall Clock Guide DDC2 / 4-RS -24 Wiring Other Clocks Set switches 1-5 of S1 as shown. Indicates depressed side of switch 3 4 5 6 7 8 OPEN...
Page 52: Appendix C - Rs485 Wiring Diagrams
RS485 Data Format The data string that sends the time to the DDC2 / DDC4 Series Wall Clocks is formatted in such a manner that a utility can be written to achieve time updates from a personal computer. The following table shows the layout and explains each character.
Page 53: Omcii To Ddc2-Rs / 4-Rs
Maximum distance to last DDC Clock is 4000 feet. Last DDC Clock must have jumper installed on position J2. See page 8 for details. Digital Display Wall Clock Guide DDC2-RS / 4-RS - JP4 Connector Signal Transmit Data (-) Transmit Data (+) D+ Signal Ground Set switches 1-5 of S1 as shown.
Page 54: Ltr0 To Ddc2-Rs / 4-Rs
Maximum distance to last DDC Clock is 4000 feet. Last DDC Clock must have jumper installed on position J2. See page 8 for details. Digital Display Wall Clock Guide DDC2-RS / 4-RS - JP4 Connector Signal Transmit Data (-) Transmit Data (+) D+...
Page 55: Ltr4 / 8-512 To Ddc2-Rs / 4-Rs
Page 49 LTR4 / 8-512 to DDC2-RS / 4-RS 115VAC Local Power 11 30 LTR4 / 8-512 LTR4 / 8-512 Terminal Connections Terminal # Signal 9 (D-) Transmit Data (-) 8 (D+) Transmit Data (+) Cable should be RS232 twisted pair / CAT3 or CAT5 type.
Page 56: Appendix D - Ddc-Tc Timer Control Panel
DDC-TC Timer Control Panel Appendix D - DDC-TC Timer Control Panel Wiring The DDC-TC can be connected to the DDC Series Wall Clock with a 6 conductor CAT3 or CAT5 network cable. The DDC-TC can be mounted up to 200 feet from the DDC Series Wall Clock. The DDC-TC comes with 6 wire nuts to connect the network cable to the 6 control wires mounted on the back of the DDC-TC.
Page 57: Installation
Page 51 Installation The DDC-TC mounts directly to a standard, double-gang wall box. (not included) Once the wiring has been attached, place the wires inside the double-gang wall box and mount the DDC-TC to the box with the four screws supplied with the DDC-TC by inserting them through the mounting holes and securing. Digital Display Wall Clock Guide Mounting Holes TIMER CONTROL...
Page 58: Operation
DDC-TC Timer Control Panel Operation As a Count Up Timer To start the count: press Count Up To pause the count: press Stop / Continue press Stop / Continue To continue the count: To return to clock mode: press Quit As a Count Down Timer To set hours: press Set Hours (defualt is 00: )
Page 59: Appendix E - Ltr-Gps Satellite Receiver / Clock Synchronizer
The Receiver Module verifies and reformats the received satellite data, and offers multiple synchronization protocol outputs: The RS-485 Output can directly synchronize up to 31 Lathem time products, up to 4000ft away, over a single twisted-pair from a user-provided Cat-3 or Cat-5 cable. The length of cable and number of synchronized devices can be further increased using Lathem’s “SWIFT485+”...
Page 60 115vAC, 2.7w, 50/60Hz Power Adapter Active GPS Antenna with 25ft. Cable Antenna Mounting Bracket and Hardware Installation and Set-Up Guide Separately, from Lathem, for Installer convenience: GPS-INSTALL-TOOLS: Battery / Beeper assemblies aid in Antenna positioning LTR-GPS Specifications: Size / Weight 3.25”x 2”x6.6”...
Page 61: Connecting To A Lathem Ddc2-Rs Or Ddc4-Rs Digital Clock
Page 55 Digital Display Wall Clock Guide Specifications Connecting to a Lathem DDC2-RS or DDC4-RS Digital Clock DDC2-RS / DDC4-RS...
Page 62: Appendix F - Specifications
DDC4 Weight DDC2 DDC4 Display DDC2 DDC4 Housing DDC2 DDC4 Line Power DDC2 / DDC4 DDC2-RS-24 / DDC4-RS-24 Standby Power DDC2 / DDC4 Environment DDC2 / DDC4 Correction Signal Mounting DDC2 / DDC4 Digital Display Wall Clock Guide 4 7/8" H X 10 1/4" W X 3 1/8" D 12.4 cm H X 26.2 cm W X 7.9 cm D...
Page 63: Appendix G - Warranty
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.

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Ddc4 series Ddc2-rs Ddc4-rs Ddc2-rs-24 Ddc4-rs-24