Lathem DDC2-RS Installation & User Manual
Digital display wall clock
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- Installation and setup manual (16 pages) ,
- Installation and user manual (63 pages)
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Summary of Contents for Lathem DDC2-RS
- 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.
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Page 3: Table Of Contents
DDC2 ..............................5 DDC4 ..............................5 DIP Switch Settings ..........................6 Configuring RS485 Communications - DDC2/4-RS Series ................7 DDC2-RS ..............................7 DDC4-RS ..............................7 Battery Usage - DDC2 / DDC4 Series ......................7 DDC2/4-RS / DDC2/4-RS-24 ........................7 Battery Installation - DDC2 / DDC4 Series ....................8 DDC2 ................................ - Page 4 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...
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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
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 VSE0052... - Page 10 Digital Display Wall Clock Guide Page 4 SAM0626 Kit (left) Includes: 1 - Mounting Plate Assembly 2 - Chase Nipples 4 - #10 Screws 8 - #10 Lock Washers 8 - #10 Hex Nuts SAM0630 Kit (middle) Includes: 1 - Mounting Plate Assembly 2 - Modified End Caps 2 - Chase Nipples 4 - #10 Screws...
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Page 11: Configuring The Ddc Series Wall Clock
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. -
Page 12: Dip Switch Settings
Digital Display Wall Clock Guide Page 6 DIP Switch Settings Table 1 - S1 (1-5) Secondary Clock Correction Secondary Clock Selection 0=Closed 1=Open *=Factory Default Stand Alone * 3-Wire Synchronous 3-Wire Minute Impulse (59 Minute) 3-Wire Minute Impulse (59 Minute) With 12 Hour Correction Standard Electric Synchronous Standard Electric AR-2A - 2-Wire Dual Voltage Standard Electric AR-2 - 2-Wire Dual Voltage... -
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
RS-24 or DDC4-RS-24 WILL CAUSE DAMAGE and void the warranty. See Appendix B for proper wiring of these models. DDC2-RS 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 15: Ddc4-Rs
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. -
Page 16: Replacing An Existing Ddc4 Wall Clock
DDC Series Wall Clock as described above. Board Layout Diagram Fly Lead Jumper Connector 9VDC Alkaline Battery DIP Switch Cradle Hours Minutes Down OPEN Lathem Time Corp. Ground DDC2\4 (E-PROM) Beeper Factory Default Install shunt on last clock for RS485 connections Figure 2... -
Page 17: Mounting - Ddc2 / Ddc4 Series
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 may be required depending on the installation type. -
Page 18: Ddc4
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. -
Page 19: Ddc2
Page 13 Digital Display Wall Clock Guide 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
Digital Display Wall Clock Guide Page 14 » Slide the front panel display back into the case, replace the end cap and secure with the two phillips head screws. Vent holes For single For 1/2" gang box conduit mount Keyholes for wall mount Figure 3 Double Mount - Wall... -
Page 21: Ddc2 (Double Mount - Wall)
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) »... -
Page 22: Ddc4 (Double Mount - Wall)
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. »... -
Page 23: Double Mount - Ceiling
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 securely in the ceiling. Required wiring should be available through the gang box at time of installation. - Page 24 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 clocks and remove.
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Page 25: Ddc4 (Double Mount - Ceiling)
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. -
Page 26: Setting The Time
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. »... -
Page 27: Appendix A - Ddc2-Rs / 4-Rs Secondary Clock Wiring Diagrams
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) GR N D 115VAC Local A C I N... -
Page 28: 3-Wire Synchronous (115Vac)
Clock will correct minutes hourly at HH:59 and hour and minutes twice daily at 5:59. 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, 941-9, 943-9 OPEN... -
Page 29: 3-Wire Synchronous (24Vac)
5:59. 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, 941-9, 943-9 OPEN... -
Page 30: 3-Wire Minute Impulse (59 Minute)
Use of a 9Volt alkaline battery is recommended to avoid resets after power Indicates depressed side of switch failures. Wiring applies to secondary wall clocks such as: Lathem ISC 3-Wire Standard Impulse Cincinnati D2, D4 OPEN Stromberg Impulse... -
Page 31: 3-Wire Minute Impulse (59 Minute With 12 Hour Correction)
Clock will correct minutes hourly at HH:58 and Set switches 1-5 of S1 as shown. hour and minutes twice daily at 5:58. Indicates depressed side of switch Wiring applies to secondary wall clocks such as: Lathem ISC 3-Wire 12Hour Simplex 91, 941 OPEN... -
Page 32: Standard Electric Synchronous
DDC2 / 4-RS Wiring Digital Display Wall Clock Guide Page 26 Standard Electric Synchronous R un 115VAC A C R et urn From Other Clocks Master Clock C orrect i o n Clock will correct minutes hourly at HH:59 and Set switches 1-5 of S1 as shown. -
Page 33: Standard Electric Ar-2A 2-Wire Dual Voltage
Page 27 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring Standard Electric AR-2A 2-Wire Dual Voltage GR N D 115VAC A C I N Local A C R T N Power 24VDC / 48VDC From Other Clocks Master Clock Set switches 1-5 of S1 as shown. -
Page 34: Standard Electric Ar-2 2-Wire Dual Voltage
DDC2 / 4-RS Wiring Digital Display Wall Clock Guide Page 28 Standard Electric AR-2 2-Wire Dual Voltage GR N D 115VAC A C I N Local A C R T N Power 24VDC / 48VDC From Other Clocks Master Clock Set switches 1-5 of S1 as shown. -
Page 35: Synchronous Wired
Page 29 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring Synchronous Wired R un 115VAC A C R et urn From Other Clocks Master Clock C orrect i o n Set switches 1-5 of S1 as shown. Clock will correct minutes hourly at HH:58 and hour and minutes twice daily beginning at 5:05. -
Page 36: Simplex 59 Th Minute Dual Motor
DDC2 / 4-RS Wiring Digital Display Wall Clock Guide Page 30 Simplex 59 Minute Dual Motor R un 115VAC A C R et urn From Other Clocks Master Clock C orrect i o n Clock must be set to proper hour. Clock will Set switches 1-5 of S1 as shown. -
Page 37: Simplex 45 Th Minute Dual Motor
Page 31 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring Simplex 45 Minute Dual Motor R un 115VAC A C R et urn From Other Clocks Master Clock C orrect i o n Set switches 1-5 of S1 as shown. Clock must be set to proper hour. -
Page 38: Edwards Dual Motor
DDC2 / 4-RS Wiring Digital Display Wall Clock Guide Page 32 Edwards Dual Motor R un 115VAC A C R et urn From Other Clocks Master Clock C orrect i o n Set switches 1-5 of S1 as shown. Clock must be set to actual time. Use of a 9Volt alkaline battery is recommended to avoid resets after power failures. -
Page 39: Standard Electric Ar-3 3-Wire Minute Impulse
Page 33 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring Standard Electric AR-3 3-Wire Minute Impulse GR N D 115VAC A C I N Local A C R T N Power 24 V D C P ul s e 24VDC / 48VDC 48 V D C C orrect i o n From... -
Page 40: National Synchronous Wired
DDC2 / 4-RS Wiring Digital Display Wall Clock Guide Page 34 National Synchronous Wired R un 115VAC A C R et urn From Other Clocks Master Clock C orrect i o n Set switches 1-5 of S1 as shown. Clock will correct minutes hourly at HH:00 and hour and minutes twice daily at 6:00. -
Page 41: Stromberg Synchronous Wired
Page 35 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring Stromberg Synchronous Wired (56 Minute) R un 115VAC A C R et urn From Other Clocks Master Clock C orrect i o n Clock will correct minutes hourly at HH:56 and Set switches 1-5 of S1 as shown. - Page 42 DDC2 / 4-RS Wiring Digital Display Wall Clock Guide Page 36 Cincinnati D1 GR N D 115VAC A C I N Local A C R T N Power 24VDC / 60VDC From Other Clocks Master Clock C OMMON Clock must be set within 20 minutes of actual time Set switches 1-5 of S1 as shown.
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Page 43: Cincinnati D6, Edwards 2406
Page 37 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring Cincinnati D6, Edwards 2406 GR N D 115VAC A C I N Local A C R T N Power 24-36VDC From Other Clocks Master Clock Clock must be set within 20 minutes of actual time Set switches 1-5 of S1 as shown. -
Page 44: 2-Wire Pulse Alternating (24Vdc)
DDC2 / 4-RS Wiring Digital Display Wall Clock Guide Page 38 2-Wire Pulse Alternating (24VDC) GR N D 115VAC A C I N Local A C R T N Power 24VDC From Other Clocks Master Clock Clock must be set within 20 minutes of actual time Set switches 1-5 of S1 as shown. -
Page 45: Electronic Coded
Page 39 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring Electronic Coded GR N D 115VAC A C I N Local A C R T N Power GR A Y 3510 H z R E D R eci e ver Requires 3510Hz receiver (not supplied) Set switches 1-5 of S1 as shown. -
Page 46: Straight Frequency
DDC2 / 4-RS Wiring Digital Display Wall Clock Guide Page 40 Straight Frequency GR N D 115VAC A C I N Local A C R T N Power GR A Y 3510 H z R E D R eci e ver Requires 3510Hz receiver (not supplied) Set switches 1-5 of S1 as shown. -
Page 47: 3-Wire Minute) Impulse (58 Minute))
Page 41 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring 3-Wire Minute Impulse (58 Minute) GR N D 115VAC A C I N Local A C R T N Power 24VDC From Other Clocks Master Clock Clock must be set within 20 minutes of actual time Set switches 1-5 of S1 as shown. -
Page 48: 3-Wire Minute) Impulse (44 Minute))
DDC2 / 4-RS Wiring Digital Display Wall Clock Guide Page 42 3-Wire Minute Impulse (44 Minute) GR N D 115VAC A C I N Local A C R T N Power 24VDC From Other Clocks Master Clock Clock must be set within 20 minutes of actual time Set switches 1-5 of S1 as shown. -
Page 49: 2-Wire Reverse Polarity Minute Impulse
Page 43 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring 2-Wire Reverse Polarity Minute Impulse (59 Minute) GR N D 115VAC A C I N Local A C R T N Power 24VDC From Other Clocks Master Clock Clock must be set within 20 minutes of actual time Set switches 1-5 of S1 as shown. -
Page 50: Appendix B - Ddc2-Rs-24 / Ddc4-Rs-24 Wiring
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 power may not be available. -
Page 51: Ddc2-Rs-24 / Ddc4-Rs-24 Wiring
Page 45 Digital Display Wall Clock Guide DDC2 / 4-RS -24 Wiring DDC2-RS-24 / DDC4-RS-24 Wiring R un 24VAC A C R et urn From Other Clocks Master Clock C orrect i o n Set switches 1-5 of S1 as shown. -
Page 52: Appendix C - Rs485 Wiring Diagrams
Requires the SWIFT-485 plus to convert the RS232 signal from the PC to RS485 to send data to the DDC Series Wall Clocks. Note: Lathem does not offer a utility to perform this function. This information is supplied so that a 3 party may create such a utility. -
Page 53: Omcii To Ddc2-Rs / 4-Rs
OMCII to DDC2-RS / 4-RS 115VAC Local Power 11 30 OMC II Other Clocks OMCII DB9 Female Plug DDC2-RS / 4-RS - JP4 Connector Signal Signal JP4 Connection Transmit Data (-) Transmit Data (-) Transmit Data (+) Transmit Data (+) D+... -
Page 54: Ltr0 To Ddc2-Rs / 4-Rs
Digital Display Wall Clock Guide Page 48 LTR0 to DDC2-RS / 4-RS 115VAC Local Power LTR 0 Other Clocks LTR0 Fly Leads DDC2-RS / 4-RS - JP4 Connector Wire Signal Signal JP4 Connection Gray Transmit Data (-) Transmit Data (-) Orange... -
Page 55: Ltr4 / 8-512 To Ddc2-Rs / 4-Rs
Page 49 Digital Display Wall Clock Guide DDC2 / 4-RS -485 Wiring LTR4 / 8-512 to DDC2-RS / 4-RS 115VAC Local Power 11 30 LTR4 / 8-512 Other Clocks LTR4 / 8-512 Terminal Connections DDC2-RS / 4-RS - JP4 Connector... -
Page 56: Appendix D - Ddc-Tc Timer Control Panel
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-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 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 supplied with the DDC-TC by inserting them through the mounting holes and securing. -
Page 58: Operation
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:... -
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: 3.25”x 2”x6.6” / 1 lb.
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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
Line Power DDC2 / DDC4 115VAC, 80mA typical 220VAC, 80mA typical (optional) DDC2-RS-24 / DDC4-RS-24 24VAC, 400mA typical Standby Power DDC2 / DDC4 9VDC, 1.2mA Alkaline Battery (not included) -
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.