Lathem DDC2 - Manuals

Digital Display Wall Clock Guide Page 2 About this Manual This manual will guide you through the installation, setup and wiring of your DDC Series Wall Clock. This manual covers the four available DDC Series models. The available models and their descriptions are: DDC2-RS / DDC4-RS Equipped with a 2...

Page 3 Digital Display Wall Clock Guide Optional Accessories VSE0050 Power Cord, 6 feet. DDC Series Wall Clocks are shipped without power cords. SAM0626 Double Ceiling Mount Kit for DDC2 or DDC4 Series SAM0630 Double Wall Mount Kit for DDC2 Series SAM0625 Double Wall Mount Kit for DDC4 Series VSE005...

Page 5 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. Place the lens aside and car...

Digital Display Wall Clock Guide Page 6 DIP Switch Settings Table 1 - S1 (1-5) Secondary Clock Correction 1 2 3 4 5 Secondary Clock Selection 0=Closed 1=Open *=Factory Default 0 0 0 0 0 Stand Alone * 1 0 0 0 0 3-Wire Synchronous 0 1 0 0 0 3-Wire Minute Impulse (59 th Minute) 1 1 0 0 0 3-Wire Minute ...

Digital Display Wall Clock Guide Page 8 When used as a RS485 clock, the master clock will send a signal to the wall clock every minute. The 9-Volt alkaline battery (not included) is optional in these types of installations. Battery Installation - DDC2 / DDC4 Series DDC2 Remove the four phillips head...

Page 9 Digital Display Wall Clock Guide AC Return) Attach the ground wire of the cord (normally green) to the green ground screw located on the inside back of the case. Slide the lens and circuit board assembly back into the case, replace the end cap and secure with the four phillips head screws. DD...

Page 11 Digital Display Wall Clock Guide 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 m...

Digital Display Wall Clock Guide Page 12 » 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. Note: If mounti...

Page 15 Digital Display Wall Clock Guide Note: The long dimension of the mounting plate must be perpendicular to the ground to assure proper alignment of wall clocks. See page 15, figure 4 for DDC2 details. See page 16, figure 5 for DDC4 details. DDC2 (Double Mount - Wall) » Remove the four phillips...

Digital Display Wall Clock Guide Page 16 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 in...

Page 17 Digital Display Wall Clock Guide Double Mount - Ceiling Requires optional mounting kit (SAM0626) Tools required for mounting the clock: Flat blade screwdriver Phillips head screwdriver 15/16" open end wrench The double ceiling mount plate attaches to a double or single gang box installed...

Digital Display Wall Clock Guide Page 18 DDC2 (Double Mount - 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. » Remove the four phillips head screws from the left and the right end caps of the two DDC2 clock...

Page 19 Digital Display Wall Clock Guide 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. Sl...

Digital Display Wall Clock Guide Page 20 Setting the Time Time is set on the DDC Series Wall Clocks by depressing buttons located on the left side of the front panel. There are two setting buttons, "H" for hour and "M' for minute. » To advance the hour or minute to the correct time one d...

Page 21 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring 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 AC IN AC RTN B L K B L K 115VAC Local Power Set switches 1-5 of S1 as shown. Indicates depressed ...

DDC2 / 4-RS Wiring Digital Display Wall Clock Guide Page 22 3-Wire Synchronous (115VAC) OPEN 1 2 3 4 5 6 7 8 Set switches 1-5 of S1 as shown. Indicates depressed side of switch Wiring applies to secondary wall clocks such as: Lathem type SS Cincinnati D10 IBM 77 Series Simplex 77 Series, 93-9, 91-9,...

Page 23 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring 3-Wire Synchronous (24VAC Correction) OPEN 1 2 3 4 5 6 7 8 Set switches 1-5 of S1 as shown. Indicates depressed side of switch Wiring applies to secondary wall clocks such as: Lathem type SS Cincinnati D10 IBM 77 Series Simplex 77 Series, 9...

Page 25 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring 3-Wire Minute Impulse (59 th Minute With 12 Hour Correction) B R N / W H T GRND AC IN AC RTN A B C V IO / W H T Y E L / W H T B L K B L K Wiring applies to secondary wall clocks such as: Lathem ISC 3-Wire 12Hour Simplex 91, 941 Set switches...

DDC2 / 4-RS Wiring Digital Display Wall Clock Guide Page 26 Standard Electric Synchronous To Other Clocks 115VAC From Master Clock OPEN 1 2 3 4 5 6 7 8 Set switches 1-5 of S1 as shown. Indicates depressed side of switch H M For 24VAC correction, use wiring shown on page 23 B L U / W H T Run Correcti...

Page 27 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring Standard Electric AR-2A 2-Wire Dual Voltage B R N / W H T GRND AC IN AC RTN AB PC Y E L / W H T B L K B L K To Other Clocks 24VDC / 48VDC From Master Clock 115VAC Local Power OPEN 1 2 3 4 5 6 7 8 Set switches 1-5 of S1 as shown. Indicates d...

DDC2 / 4-RS Wiring Digital Display Wall Clock Guide Page 28 Standard Electric AR-2 2-Wire Dual Voltage B R N / W H T GRND AC IN AC RTN AB PC Y E L / W H T B L K B L K To Other Clocks 24VDC / 48VDC From Master Clock 115VAC Local Power OPEN 1 2 3 4 5 6 7 8 Set switches 1-5 of S1 as shown. Indicates de...

Page 29 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring Synchronous Wired To Other Clocks 115VAC From Master Clock OPEN 1 2 3 4 5 6 7 8 Set switches 1-5 of S1 as shown. Indicates depressed side of switch Wiring applies to secondary wall clocks such as: Cincinnati D8 Faraday Honeywell ST402A H M ...

DDC2 / 4-RS Wiring Digital Display Wall Clock Guide Page 30 Simplex 59 th Minute Dual Motor To Other Clocks 115VAC From Master Clock OPEN 1 2 3 4 5 6 7 8 Set switches 1-5 of S1 as shown. Indicates depressed side of switch H M For 24VAC correction, use wiring shown on page 23 B L U / W H T Run Correc...

DDC2 / 4-RS Wiring Digital Display Wall Clock Guide Page 32 Edwards Dual Motor To Other Clocks 115VAC From Master Clock OPEN 1 2 3 4 5 6 7 8 Set switches 1-5 of S1 as shown. Indicates depressed side of switch H M For 24VAC correction, use wiring shown on page 23 B L U / W H T Run Correction B R N / ...

Page 33 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring Standard Electric AR-3 3-Wire Minute Impulse To Other Clocks 24VDC / 48VDC From Master Clock 115VAC Local Power OPEN 1 2 3 4 5 6 7 8 Set switches 1-5 of S1 as shown. Indicates depressed side of switch B R N / W H T 24 VDC Pulse Common Y E L...

DDC2 / 4-RS Wiring Digital Display Wall Clock Guide Page 34 National Synchronous Wired To Other Clocks 115VAC From Master Clock OPEN 1 2 3 4 5 6 7 8 Set switches 1-5 of S1 as shown. Indicates depressed side of switch H M For 24VAC correction, use wiring shown on page 23 B L U / W H T Run Correction ...

Page 35 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring Stromberg Synchronous Wired (56 th Minute) To Other Clocks 115VAC From Master Clock OPEN 1 2 3 4 5 6 7 8 Set switches 1-5 of S1 as shown. Indicates depressed side of switch H M For 24VAC correction, use wiring shown on page 23 B L U / W H T...

DDC2 / 4-RS Wiring Digital Display Wall Clock Guide Page 36 Cincinnati D1 B R N / W H T GRND AC IN AC RTN A COMMON Y E L / W H T B L K B L K To Other Clocks 24VDC / 60VDC From Master Clock 115VAC Local Power OPEN 1 2 3 4 5 6 7 8 Set switches 1-5 of S1 as shown. Indicates depressed side of switch H M...

Page 39 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring Electronic Coded B R N / W H T GRND AC IN AC RTN B L U / W H T B L K B L K RED GRAY W H T 3510 Hz Reciever 115VAC Local Power OPEN 1 2 3 4 5 6 7 8 Set switches 1-5 of S1 as shown. Indicates depressed side of switch H M Requires 3510Hz recei...

DDC2 / 4-RS Wiring Digital Display Wall Clock Guide Page 40 Straight Frequency B R N / W H T GRND AC IN AC RTN B L U / W H T B L K B L K RED GRAY W H T 3510 Hz Reciever 115VAC Local Power OPEN 1 2 3 4 5 6 7 8 Set switches 1-5 of S1 as shown. Indicates depressed side of switch H M Requires 3510Hz rec...

Page 43 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring 2-Wire Reverse Polarity Minute Impulse (59 th Minute) AB PC Y E L / W H T GRND AC IN AC RTN B L K B L K V IO / W H T To Other Clocks 24VDC From Master Clock 115VAC Local Power OPEN 1 2 3 4 5 6 7 8 Set switches 1-5 of S1 as shown. Indicates ...

DDC2 / 4-RS -24 Wiring Digital Display Wall Clock Guide Page 44 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 ...

DDC2 / 4-RS -485 Wiring Digital Display Wall Clock Guide Page 46 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...

Page 47 Digital Display Wall Clock Guide DDC2 / 4-RS -485 Wiring OMCII to DDC2-RS / 4-RS Pin Signal Signal JP4 Connection 1 Transmit Data (-) Transmit Data (-) D- 2 Transmit Data (+) Transmit Data (+) D+ 8 Signal Ground Signal Ground GND To Other Clocks BLK BLK 115VAC Local Power OMCII DB9 Female Pl...

DDC2 / 4-RS -485 Wiring Digital Display Wall Clock Guide Page 48 LTR0 to DDC2-RS / 4-RS Wire Signal Signal JP4 Connection Gray Transmit Data (-) Transmit Data (-) D- Orange Transmit Data (+) Transmit Data (+) D+ Black Signal Ground Signal Ground GND BLK BLK 115VAC Local Power To Other Clocks LTR0 Fl...

Page 49 Digital Display Wall Clock Guide DDC2 / 4-RS -485 Wiring LTR4 / 8-512 to DDC2-RS / 4-RS Terminal # Signal Signal JP4 Connection 9 (D-) Transmit Data (-) Transmit Data (-) D- 8 (D+) Transmit Data (+) Transmit Data (+) D+ BLK BLK 115VAC Local Power To Other Clocks LTR4 / 8-512 Terminal Connect...

DDC-TC Timer Control Panel Digital Display Wall Clock Guide Page 50 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-...

Page 51 Digital Display Wall Clock Guide DDC-TC Timer Control Panel 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 supp...

DDC-TC Timer Control Panel Digital Display Wall Clock Guide Page 52 Operation As a Count Up Timer To start the count: press Count Up To pause the count: press Stop / Continue To continue the count: press Stop / Continue To return to clock mode: press Quit As a Count Down Timer To set hours: press Se...

Page 53 Digital Display Wall Clock Guide Specifications Appendix E - LTR-GPS Satellite Receiver / Clock 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 or...

Page 55 Digital Display Wall Clock Guide Specifications Connecting to a Lathem DDC2-RS or DDC4-RS Digital Clock D DC 2 - RS / D DC 4 -RS

Warranty Digital Display Wall Clock Guide Page 56 Appendix F - Specifications Dimensions DDC2 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 DDC4 6 3/4" H X 15 1/2" W X 3 1/8" D 17.1 cm H X 39 cm W X 7.9 cm D Weight DDC2 3.2 lbs (1.451 kg) DDC4 9 lbs. (4.086...

Page 57 Digital Display Wall Clock Guide Specifications Appendix G - Warranty Limited One-Year Limited Warranty Lathem warrants the hardware products described in this guide against defects in material and workmanship for a period of one year from date of original purchase from Lathem or from an aut...