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Lathem DDC2 Time Clock User Manual

1. E z 5 J jg S O cc OMC Il a ima te 5 S HO 556 n W o b To Other Clocks o OMCII DB9 Female Plug DDC2 RS 4 RS JP4 Connector Pin Signal Signal JP4 Connection 1 Transmit Data Transmit Data D 2 Transmit Data Transmit Data D 8 Signal Ground Signal Ground GND Cable should be RS232 twisted pair CAT3 or CATS type Set switches 1 5 of S1 as shown Maximum distance to last DDC Clock is 4000 feet Last DDC Clock must have jumper installed on position J2 See page 8 for details A Indicates depressed side of switch EE OPEN DDC2 4 RS 485 Wiring Digital Display Wall Clock Guide Page 48 LTRO to DDC2 RS 4 RS 115VAC Local BLK a e JO Power BLK as G F J Z I 11 30 E g LTR O oO E Q Q Y J lt IZIA b b To Other Clocks hd LTRO Fly Leads DDC2 RS 4 RS JP4 Connector Wire Signal Signal JP4 Connection Gray Transmit Data Transmit Data D Orange Transmit Data Transmit Data D Black Signal Ground Signal Ground GND Cable should be RS232 twisted pair CAT3 or CATS type Set switches 1 5 of S1 as shown Maximum distance to last DDC Clock is 4000 feet Last DDC Clock must have jumper installed on position J2 See page 8 for details il Indicates depressed side of switch Semen OPEN Page 49 Digital Display Wall Clock Guide DDC2 4 RS 4
2. LATHEM TIME Digital Display Wall Clock DDC2 DDCA Series Installation amp User s Guide 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 This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any interference received including interference that may cause undesired operation NOTICE This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on
3. 1200 Baud 1 12 Hour 2400 Baud O 24 Hour 4800 Baud Note When switches 1 5 are set for any 9600 Baud secondary type other than Stand Alone the display is forced to 12 Hour and the PM indicator does not illuminate Page 7 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 LTRO 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 When shipped the shunt is placed over only one pin of position J2 in an open setting It is necessary to place the shunt over both pins of position J2 and create a closed setting for the last clock on the line 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 Place the lens aside and carefully flip the circuit board assembly over and lay it face down on a clean smooth work surface Locate position J2 on the left upper side of the back of the circuit board assembly see figure 2 page 9 Lift the shunt straight up off the single pin of position J2 Align the shunt to cover both pins of position J2 and press firmly into place Slide the lens and circuit boa
4. See figure 2 page 9 Slide the battery into the cradle making sure the Positive and Negative connections of the battery and cradle match Snap the battery onto the connections located inside the battery cradle Slide the front panel display back into the case replace the end cap and secure with the two phillips head screws 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 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 Place the lens aside and carefully flip the circuit board assembly over and lay it face down on a clean smooth work surface Remove one of the vent caps from the case of the wall clock and route the power cord through it to the back of the circuit board assembly If the power cord will be routed through the back of the clock conduit access route the cord through the gang box and conduit access hole to the back of the circuit board assembly Strip away 1 2 of the protective shield from each wire of the power cord Locate the two black wires leading from J1 see figure 2 page 9 and attach the AC In line of the cord to one and the AC Return line to the other normally black is AC In and white is Page 9 Digital Display Wall Clock G
5. defualt is 00 To start the count press Count Down To pause the count press Stop Continue To continue the count press Stop Continue To return to clock mode press Quit Note To pause and continue press the corresponding Stop Continue button that started the operation In the Count Down mode when 00 00 is reached an audible tone will sound and the display will return to clock mode When in Count Up or Count Down mode when the time being counted is greater than 60 minutes the display will read HH MM When the time being counted reaches less than 60 minutes the display will read MM SS 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 orbit around the globe The package includes an amplified GPS Antenna which must be mounted out doors or beneath a roof sky light facing skyward An integrated cable links the Antenna to the LTR GPS Receiver Module which should be mounted in doors 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 len
6. es 12345678 aoa z eS AAA DNA RANAS OPEN Lathem Time Corp DDC2 4 E PROM Cr Nels J2 J2 Factory Default Install shunt on Off last clock for RS485 connections Figure 2 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 See page 14 figure 3 Mounting to a Wall Tools required for mounting the clock Drill with a 5 16 bit Hammer Phillips head screwdriver Wall anchors Pencil DDC2 After deciding the location where the clock will be mounted make two marks 7 apart and horizontal Note If mounting near a ceiling make sure the holes are 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 Drill a 5 16 hole at each mark Insert a wall anchor in each hole and tap it flush to the wall with the hammer Insert a screw into each wall anchor leaving 1 4 exposed Remove the four phillips head screws from the left or the right end cap and remove Sli
7. 32 to 150 F 0 to 65 C 95 Relative Humidity non condensing 115VAC 6 5mA 24VDC 16mA 48VDC 40mA 60VDC 56mA 24VAC 6 5mA Wall surface Single Gang Box surface Double Face wall or ceiling optional 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 authorized Lathem reseller The conditions of this warranty and the extent of the responsibility of Lathem Time Corporation Lathem under this warranty are listed below 1 Ze R This warranty will become void when service performed by anyone other than an approved Lathem warranty service dealer results in damage to the product This warranty does not apply to any product which has been subject to abuse neglect or accident or which has had the serial number altered or removed or which has been connected installed adjusted or repaired other than in accordance with instructions furnished by Lathem This warranty does not cover dealer labor cost for removing and reinstalling the machine for repair or any expendable parts that are readily replaced due to normal use The sole responsibility of Lathem under this warranty shall be limited to repair of this product or replacement thereof at the sole discretion of La
8. 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 1 lb Power 6 12vAC DC 300mA max Certificates FCC Part 15 ICESO03 Page 55 Digital Display Wall Clock Guide Specifications Connecting to a Lathem DDC2 RS or DDC4 RS Digital Clock DDC2 RS DDC4 RS Warranty Digital Display Wall Clock Guide Page 56 Appendix F Specifications Dimensions DDC2 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 47 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 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 3 2 Ibs 1 451 kg 9 Ibs 4 086 kg 1 3 4 Inch Red 7 Segment LED 3 3 4 Inch Red 7 Segment LED Extruded aluminum main case with black textured paint red lexan panel steel end caps with black textured paint Extruded aluminum main case with black textured paint steel front panel with black textured paint molded plastic end caps with black texture 115VAC 80mA typical 220VAC 80mA typical optional 24V AC 400mA typical 9VDC 1 2mA Alkaline Battery not included
9. power A depressed Side OE CH failures P Wiring applies to secondary wall clocks such as UA Pe a o 6 7 8 Lathem ISC 3 Wire Standard Impulse Cincinnati D2 D4 A A A A A g y A OPEN Stromberg Impulse Edwards Impulse Faraday Impulse Simplex 75 Series 91 4 93 4 941 4 943 4 IBM 75 Series Page 25 Digital Display Wall Clock Guide DDC2 4 RS Wiring 3 Wire Minute Impulse 59 Minute With 12 Hour Correction G U Ww lt lt U E m pe D 115VAC GRND A A E O Zz Local AC IN om Power AC RTN o E T 4 24VDC A r From Other Clocks Master Clock C lock will t minutes hourly at HH d da ae Set switches 1 5 of S1 as shown hour and minutes twice daily at 5 58 i Indicates depressed side of switch Wiring applies to secondary wall clocks such as mE 4 5 6 7 8 Lathem ISC 3 Wire 12Hour Simplex 91 941 H y A A A a y A OPEN DDC2 4 RS Wiring Digital Display Wall Clock Guide Page 26 Standard Electric Synchronous 14d 14d LHM Nug LHM N18 115VAC Run n From AC Return o Master Clock Correction Other Clocks Clock will correct minutes hourly at HH 59 and hour and minutes twice daily at 5 12 Seb swalches 1 5 Ol ok as shown i Indicates depressed side of switch semen For 24VAC correction use wiring shown on page 23 OPEN Page 27 Digital Display Wall Clock Guide DDC2 4 RS Wiring Standard Electr
10. sure you have at least 16 of side clearance on one side in order to remove the front panel Drill a 5 16 hole at each mark Insert a wall anchor and tap it flush to the wall with the hammer Insert a screw into each wall anchor leaving 1 4 exposed Remove the two phillips head screws from the left or the right end cap and remove Slide the front panel assembly out of the case and set aside Line up the two keyholes on the back of the case and slip over the two screws and tighten securely The lower mounting holes can be marked at this point the case removed holes drilled and wall anchors installed if so desired Remove the desired vent cap that any required wiring will route through If the wiring will be installed through the back of the clock conduit access route the fly leads of the clock s Cable Harness Assembly from the interior of the clock through the hole in the Clock s rear plate Use wire nuts or crimp connectors to join these leads with the power and synch signal cable in the gang box behind the clock to eliminate possible snagging when the circuit board assembly is removed or replaced If RS 485 signaling is used attach the signal pair to the mini Terminal Block Plug and pass the cable from behind the clock through the hole into the clock s interior Route the 6 position plug and optional RS485 cable to the circuit board assembly and attach Slide the front panel display back into the case replac
11. that the last pulse was received until power to the master clock is restored and pulses continue With the DDC TC option the Digital Display Series Wall Clocks can act as a count up or count down timer as well as running as an impulse secondary clock 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 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 LTRO mini master Terminal Manager Software or the OMNI CHRON Time Clock DDC2 RS 24 DDC4 RS 24 Same as above models with the 24 suffix have an optional power transformer that allows for 24VAC operation These models are designed to be powered from an external 24VAC power supply for use in installations where local 115VAC power may not available The Lathem SWIFT 485 plus is required for RS485 synchronization Page 3 Digital Display Wall Clock Guide Optional Accessories VSE0050 SAM0626 SAM0630 SAM0625 VSE0052 DDC TC LTR4 512 LTR8 512 LTR8 512M Mlink SWIFT 485 plus Power Cord 6 feet DDC Series Wall Clocks are shipped without power cords Doub
12. the 9 Volt alkaline battery not included the wall clock will reset to 12 00 AM after power resumes and will not receive the proper signal from the master clock to fully correct 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 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 carefully flip the circuit board assembly over and lay it face down on a clean smooth work surface Locate the Battery Cradle on the upper right corner of the circuit board assembly See figure 2 page 9 Slide the battery into the cradle making sure the Positive and Negative connections of the battery and cradle match Snap the battery onto the connections located inside the battery cradle Slide the lens and circuit board assembly back into the case replace the end cap and secure with the four phillips head screws DDC4 Remove the two phillips head screws from the left or the right end cap and remove Slide the front panel assembly out of the case Carefully flip the front panel assembly over and lay it face down on a clean smooth work surface Locate the Battery Cradle on the upper right corner of the circuit board assembly
13. the minutes past 59 will not cause the hour to advance Note Avoid using sharp or pointed objects to set the time as damage to the buttons may occur A standard pencil eraser is suggested 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 To set the display format use Table 3 on page 4 to set switch 8 of Sl Note When switches 1 5 are set for any secondary type other than Stand Alone the display is forced to 12 Hour and the PM indicator does not illuminate 12 Hour Format 24 Hour Format 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 14d 14d 115VAC GRND Local ACIN Power AC RTN Hour and Minutes must be set manually Use of a 9Volt alkaline battery is recommended to avoid resets after power failures Set switches 1 5 of S1 as shown ll Indicates depressed side of switch semen OPEN DDC2 4 RS Wiring Digital Display Wall Clock Guide Page 22 3 Wire Synchronous 115VAC W UU W U Fr gt JJ Es A A Z E T T E I msvac Run j n From AC Return 0 Ot
14. 7 DDEA Donble Mount Celing usario EE O cans tadeagactandint sthesipsssteeasoeedeateaate 19 Setting the TIME niuir a ektattececes lap laaeedseth sc 2beteeaecases E A A E a RS 20 Time A a Aa A a aaa 20 IAA LOETA EO E 1 E a E TE 20 24A Hout Formata O TR 20 Appendix A DDC2 RS 4 RS Secondary Clock Wiring DiagraMS ooononnncnonnnonononcnonconnconocononononnnonnnonnconos 21 Stand Alone CAS VA Clinical le ria aa o a ais 21 3 Wire Synchronous GIS WAC ea a A ea a T A O a A A aaie 22 3 Ware S ynchronous 2Z4 VAC A s2taaptaadoodpseaieessuvedeasea ste 23 3 Wire minute Impulse 59 MIMO iaa 24 3 Wire Minute Impulse 59 Minute With 12 Hour CorrectiON occccooocccnononnncnonnnnnnnoncnononnncncnonnnnncnanonnnns 25 Standard Electric YnChHrOMOUS comite ah sie adie then 26 Standard Electric AR 2A 2 Wire Dual Voltage oooconocnnonnnocononcnoncnononnconnnonncnnncnnncon ono no cono nnno nano nn ncnnccnncnnos 27 Standard Electric AR 2 2 Wire Dual Voltage ooonocnninnnonnnocononcnanonancnnconncnnnonononnncon nc no cono ro nora ncnnncnnccnncnnos 28 Synchronous Wide ad 29 Simplex 50 Minute Dual Maa 30 Simplex 45 Minute Dual Mo dia oi 31 Edwards Dual Motor a a T E A aaa ne eases 32 Standard Electric AR 3 3 Wire Minute Impulse ssssssesesesseeseessreresresresresrestrrrsrestenresresresresrsersresresrent 33 National Synchronous Witivi tra 34 Stromberg Synchronous Wired 56 Minute c ccssssessssssessssssssnssssssecssssesssessessnesr
15. 85 Wiring LTR4 8 512 to DDC2 RS 4 RS 115VAC Local BLK Power BLK O g I Os iS 11 30 Ie A LTR4 8 512 UU gt To Other Clocks LTR4 8 512 Terminal Connections DDC2 RS 4 RS JP4 Connector Terminal Signal Signal JP4 Connection 9 D Transmit Data Transmit Data D 8 D Transmit Data Transmit Data D Cable should be RS232 twisted pair CAT3 or CATS type Set switches 1 5 of S1 as shown Maximum distance to last DDC Clock is 4000 feet Last DDC Clock must have jumper installed on position J2 O denressed Gas SP eeateh See page 8 for details P see OPEN 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 CATS 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 The 6 control wires include Up Down Hours Minutes Beeper and Ground To wire the DDC TC to the DDC Series Wall Clock locate JP2 and JP4 on the back of the DDC display panel see figure 2 page 10 pass the wire through a knockout at both the DDC TC double gang box not included the DDC Wall Clock and follow the diagram below Rear View Used for Referen
16. V AC 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 When shipped the DDC2 RS 24 and DDC4 RS 24 have an optional power transformer that allows for 24VAC operation The 24VAC power from the Master Clock or Power Supply should be connected to the two black wires leading from J1 See figure 7 below for location of J1 Correction wiring should be applied according to the secondary type selection as shown in Appendix A CAUTION Applying any voltage higher than 24VAC to the input two black leads from J1 WILL cause damage to the DDC2 RS 24 and DDC4 RS 24 clocks Fly Lead J umper Connector P 9VDC Alkaline Battery JI J2 DIP Switch Cradle CHANIA IA Hours ben iw 1234567 8 wn OOOO BARBA Down Ground O Lathem Time Corp Beeper O DDC2 4 E PROM D A D Figure 7 Page 45 Digital Display Wall Clock Guide DDC2 4 RS 24 Wiring DDC2 RS 24 DDC4 RS 24 Wiring G m U U UU U TJ m A A Z E b I T 4 4 Run 24V AC AC Return To mom Other Clocks Master Clock Correction Set switches 1 5 of S1 as shown i Indicates depressed side of switch TTET OPEN DDC2 4 RS 485 Wiring Digital Display Wall Clock Guide Page 46 Appe
17. a id lia 7 DDCA RR Sii adan A ade 7 Battery Usage DDC2 DDC4 Series cintas 7 DDC2 4 RS J DDC2 4 RS 24 noriai ia ar iaa Aa AERE E EA AK VAA nET 7 Battery Installation DDC2 DDC4 Series ee ceceesceseceeeceseeseecseeeseesaeesaeceaesseeeeesseseaesnaeenseeneeeaeees 8 DDO Zumaia eusknissties began ida 8 DD C4 ui tad ie 8 Power Cord Installation DDC2 4 RS concocconoconoconaconnonnnonnonnonnnonncconocno nono nn nono nonn non ron r non r ona cnn nr n erre cinc rnnannnos 8 DDR Sucina ralla 8 DDCAR Suites sita da ltda 9 Wiring Installation DDC2 4 RS Seriesin nnan a cnc cnc nono nn ncnn conan cnn rn anno RE E 9 Secondary WIDE 20 A A AA eee at we He 9 RSA 8 SW et sd che cet kesh A A A A Utes te Sateen eee UNS even tt 9 DDC TC Watt rises Slinky AS eset cae be as ER aac aoe ant AS aes ey 9 Replacing an Existing DDC4 Wall Clock ee ceceeeceececeeseeeseeeseeeseeesecsaesseesseesaeeeaeseaeseaeeseeeeeeaeees 10 Board Layout Dia stam s cscctive E A PE Sree aut a 10 Mountins DIDC2 DID GCA Series norne A A 11 Mountingto a Wall A a E beanenhd aes aveaneceiees 11 DDEC artis E A AA tae ROA 11 DD o A SA ML eevee 12 Mounting to a Single Gang BOX uti eset pense ou E EERO T ete eben RE e E 12 DD Cir E A aot ae Sa aS roe aoe da da 13 NR RO 13 Double Mount Wall aseene a a a ai a stages a a a eisa 14 DDC2 Double Mount Wall ceee a a E E aa aE aR 15 DDC4 Double Mount Wallie icrit a E E Ea 16 Double Mount Ceiling nen rini O ee 16 Double Mount A ON 1
18. ap from the top of each DDC4 clock Line the two posts from the mounting plate up with the vent holes of the DDC4 clocks Insert the chase nipples through the vent holes and secure to the mounting plate with a 15 16 wrench Slide the front panel assemblies in partially Secure the required wiring and install the battery if used Slide the front panel assemblies in fully Install the end caps and secure each with its two screws e Note When mounting DDC4 clocks the long side of the mounting plate must be parallel to the long side of the clocks 10 hex nuts a N we O chas nipple Po aes gt Figure 7 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 digit at a time press and release the proper button Do this as many times as required until the correct time is displayed When setting the hour if the display is set to 12 Hour a dot in the upper left corner of the display represents the PM hours To rapidly advance the hour or minute press and hold the proper button Release the button when the correct time is displayed When setting the hour if the display is set to 12 Hour a dot in the upper left corner of the display represents the PM hours Note Setting
19. as shown hour and minutes twice daily at 11 56 i Indicates depressed side of switch PB D Hann For 24V AC correction use wiring shown on page 23 OPEN DDC2 4 RS Wiring Digital Display Wall Clock Guide Page 36 Cincinnati D1 amp re K g usvac GRND A A E gt Local AC IN OS Power AC RTN I I zi 24vDc 60vDc A From To Master Clock COM MON Other Clocks Clock must be set within 20 minutes of actual time Set switches 1 5 of S1 as shown for master to synchronize Use of a 9Volt alkaline battery is recommended to avoid resets after power 5 li Indicates depressed side of switch failures OMAR OPEN Page 37 Digital Display Wall Clock Guide DDC2 4 RS Wiring Cincinnati D6 Edwards 2406 1 U U lt lt nsvac JGRND Rk O a Local E Power AC RTN 4 oa 24 36VDC AB E From Other Clocks Master Clock PC Clock must be set within 20 minutes of actual time for master to synchronize Use of a 9Volt alkaline setswitches Sol as shown battery is recommended to avoid resets after power failures i Indicates depressed side of switch ANMAT OPEN DDC2 4 RS Wiring Digital Display Wall Clock Guide Page 38 2 Wire Pulse Alternating 24VDC W JJ W lt lt 115VAC GRND x x 2 a Local AC IN lt Power AC RTN E AR I T Fl 24VDC A gt m From Other Clocks Master Clock B Clock must
20. be set within 20 minutes of actual time for master to synchronize Use of a 9Volt alkaline Ser switches Sa OP ae sao battery is recommended to avoid resets after power failures ll Indicates depressed side of switch 123 4 5 6 7 8 OPEN Page 39 Digital Display Wall Clock Guide DDC2 4 RS Wiring Electronic Coded 115VAC GRND _ Local AC IN Power AC RTN o 1d 1d LHM Mg LHM Na GRAY 3510 Hz RED Reciever I Requires 3510Hz receiver not supplied Set switches 1 5 of S1 as shown Clock will correct minutes hourly at HH 57 and i Indicates depressed side of switch COMMON hour and minutes twice daily at 5 57 OPEN DDC2 4 RS Wiring Digital Display Wall Clock Guide Page 40 Straight Frequency 115VAC GRND _ Local AC IN Power AC RTN o 119 119 1HM N18 1HM Nyg GRAY 3510 Hz RED Reciever I a Requires 3510Hz receiver not supplied Set switches 1 5 of S1 as shown Clock will correct minutes hourly at HH 57 and il Indicates depressed side of switch ATAN hour and minutes twice daily at 5 57 OPEN Page 41 Digital Display Wall Clock Guide DDC2 4 RS Wiring 3 Wire Minute Impulse 58 Minute 113 EE 115VAC GRND A F O Z Local AC IN lt dz Power AC RTN gt T I 4 4 Y 24VDC A From e To Other Clocks Master Clock C Clock must be set within 20 minu
21. box installed securely in the ceiling Required wiring should be available through the gang box at time of installation Remove the two chase nipples from the mounting plate posts Run the required wiring from the gang box through one of the mounting posts of the mounting plate 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 See page 18 figure 6 for DDC2 details See page 19 figure 7 for DDCA details 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 Slide the lenses and circuit board assemblies out of the cases and set aside Place the two DDC2 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 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 Remove the center vent cap from
22. 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 Attach the modified end cap to the end of the clocks that will be attached to the wall mount plate using the original end cap screws Align the holes of the end cap support plate with the holes in the modified end cap and secure with 4 6 phillips head screws supplied Line the two posts from the mounting plate up with the two holes of the modified end cap Insert the chase nipples through the holes of the modified end cap and secure to the mounting plate with a 15 16 wrench Slide the front panel assemblies in partially Secure the required wiring and install the battery if used Slide the front panel assemblies in fully Install the end caps and secure each with its two screws Discard or store the two original end caps the modified end cap replaced mounting plate modified end caps DDC4 cases i e NS 10 hex nuts 10 lock washers as chase nipples 10 lock washers A E 10 screws nit Figure 5 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
23. ce Down o d wo Minutes _ 7 Beeper Ground __ JP2 gt Green Hours C3 Hours Minutes Green White Minutes Up A Brown Up Down O Brown White Dawi yea Blue round Ground B A Blue White EP IE Beeper D O CAT3 or CAT5 Cable 200 feet maximum D O Wire colors may vary Keep in pairs as shown DDC Series Wall Clock DDC TC Panel 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 Mounting Holes _ TIMER CONTROL gt Count Up Set Hours Start 00 00 Quit oe ES Stop Continue N JA Count Down Set Minutes ere Start HH MM Stop Continue Km O 22 poc te X Mounting Holes 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 Set Hours defualt is 00 To set minutes press Set Minutes
24. d 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 Place the two DDC2 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 Attach the modified end caps to the end of the clocks that will be attached to the wall mount plate using the original end cap screws Run the required wiring through the matching hole in the modified end cap Line the two posts from the mounting plate up with the two holes of the modified end caps Insert the chase nipples through the holes of the modified end caps and secure to the mounting plate with a 15 16 wrench Slide the circuit board assemblies in partially Secure the required wiring and install the battery if used Slide the circuit board assemblies in fully along with the lenses Install the end caps and secure each with its four screws Discard or store the two original end caps the modified end caps replaced mounting plate modified end caps 10 hex nuts iN gs wa washers gt 10 screws Figure 4 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
25. de the lens and circuit board assembly out of the case and set aside Line up the two keyholes on the back of the case and slip over the two screws and tighten securely The lower mounting holes can be marked at this point the case removed holes drilled and wall anchors installed if so desired Remove the desired vent cap that any required wiring will route through If the wiring will be installed through the back of the clock conduit access route the fly leads of the clock s Cable Harness Assembly from the interior of the clock through the hole in the Clock s rear plate Use wire nuts or crimp connectors to join these leads with the power and synch signal cable in the gang box behind the clock to eliminate possible snagging when the circuit board assembly is removed or replaced If RS 485 signaling is used attach the signal pair to the mini Terminal Block Plug and pass the cable from behind the clock through the hole into the clock s interior Route the 6 position plug and optional RS485 cable to the circuit board assembly and attach 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 mounting near a ceiling make sure the holes are at least 2 1 4 away from the ceiling Note Make
26. e the end cap and secure with the two phillips head screws Mounting to a Single Gang Box Two mounting holes have been located in the center of the case 2 1 4 apart for mounting to a single gang wall box A 7 8 hole has been placed between the mounting holes that will accept conduit if desired See page 14 figure 3 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 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 and set aside Remove the desired vent cap that any required wiring will route through If the wiring will be installed through the back of the clock conduit access route the fly leads of the clock s Cable Harness Assembly from the interior of the clock through the hole in the Clock s rear plate Use wire nuts or crimp connectors to join these leads with the power and synch signal cable in the gang box behind the clock to eliminate possible snagging when the circuit board assembly is removed or replaced If RS 485 signaling is used attach the signal pair to the mini Terminal Block Plug and pass the cable from behind the clock through the hole into the clock s interior Line the
27. e wiring harness can be removed from the back of the main circuit board at position J1 as shown in figure 2 so wiring from the master clock can be attached to the wiring harness with the clock s Electronic Assembly removed The leads from the wiring harness should be connected as shown in the diagrams in Appendix A RS485 Wiring The DDC Wall Clock comes with a detachable wiring block to make installation easier The wiring block can be removed from the back of the main circuit board at position JP4 as shown in figure 2 so wiring from the master clock can be attached without the need of holding the Wall Clock itself Wiring should be connected as shown in the diagrams in Appendix C DDC TC Wiring The DDC Wall Clock comes with a detachable wiring block to make installation easier The wiring block can be removed from the back of the main circuit board at position JP2 as shown in figure 2 so wiring from the Timer Control Panel can be attached without the need of holding the Wall Clock itself Wiring should be connected as shown in the diagrams in Appendix D Digital Display Wall Clock Guide Page 10 Replacing an Existing DDC4 Wall Clock When replacing an older style DDC4 Wall Clock it will be necessary to remove any connectors used by the older style clock and attach the wires to the new DDC Series Wall Clock as described above Board Layout Diagram Fly Lead umpe Connector J 9VDC Alkaline Battery DIP Switch Cradle S1 Hours A
28. esrentesresrssrsestestentestesresrseenresresrent 50 WALID AE EE SE A AA st Meg A AI A A ebeseeee 50 Installation ii a di dia 51 Operation eose A A A A AA pastes aoe peice ees 52 Asa Count U peime nunna a a a a a a a a aaas 52 Asa Count Down TIMET insign tag ea a iio RA oae 52 Appendix E LTR GPS Satellite Receiver Clock Synchronizer ooooncnnncnonnnocnnoncnoncnanconoconoconornnonnnonanonnconos 53 Connecting to a Lathem DDC2 RS or DDC4 RS Digital Clock oooonncnncninnnonanononononancnnncnnccnncnnncnnnnn 55 Appendix F Speciications nsis soie aa a cage o ET a E E a a RSR 56 Appendix G Waranty A cade RS 57 Page 1 Digital Display Wall Clock Guide Introduction The Digital Display Series Wall Clocks are designed with 2 inch or 4 inch red LED displays that can be viewed from great distances the 4 inch model as far away as 100 feet the 2 inch model from as far away as 50 feet The bright red display shows the hour and minutes and can be configured for a 12 or 24 hour format By the setting of internal DIP switches the DDC Series Wall Clocks can be configured to run as 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 LTRO mini master Terminal Manager Software or the OMNI CHRON Time Clock using an RS485 correction signal The DDC Series Wall Clocks with the optional DDC TC Timer Co
29. essnecssssseensssseencsrecenes 35 A RAN 36 Cincinnati D6 Edwards 2406 s ccccccossssscsssccccesssssensceccessssssenscesccessssnanaeeecccsssssaneeesesceessnaanesesesesssanes 37 2 Wire Pulse Alternating 24 VDC vec cceccccesccncctucntcusssaccuccvacceveuscdestecthsensanacssenccuaccesstesvecbesth denceeedecceedtocuss 38 Blectromic Coded ismer na ndo end vente dau teeoes E aae cd natech dea sauede sonesbaceesalioavecbedss oueeeedseeeanbecents 39 Straight Frequency A cesdesecesseusepsuyeuds TE sgnevdacsedaugevegy ove san dsva ss coucrdacne E EEE susevgeeneie 40 3 Wire Minute Impulse 5 qu A 2sccc ict ot vee Ase ees Rati wlan heel aie lan sien aes 41 3 Wire Minute Impulse 44 Minute ccoo tie ias 42 2 Wire Reverse Polarity Minute Impulse 59 Minute cccscsssessesssessesssessessessessessecsesssessessesseeseessecs 43 Appendix B DDC2 RS 24 DDC4 RS 24 Wiring eee ceceeeeceseceseceaececeeeeeseeeseesaessaesseesseeeseeeatenas 44 DDC2 RS 24 DDC4 RS 24 Wiring sci secs irens iese eA IREE soneviaccavanasvoev Ea a asi 45 Appendix C RS485 Wiring Diagrams 00 eee eee ceceeseeseceseceneseeeceeeseceaecesecaecseeeseeeaeessessaeseeesseeeaeseaeenas 46 RS483 Data Format arns se n cect id e 46 OMCT to DDC2Z RS AARS niin ka e A aE E e EE E gue ee EE EE EEE ENE eee 47 ETRO t0 DDC2 RS 4 RS e aoe a e E E a 48 LTR4 48 512 to DDC2 RS V4 RS siiri eet iae iia 49 Appendix D DDC TC Timer Control Panel sseeseeseeeseeseessesresresrssrsresr
30. gth of cable and number of synchronized devices can be further increased using Lathem s SWIFT485 RS 485 Converter Repeater The supported products include LTR 0 Master Clock 1 Clock Ctl DWA S Sonochron 1 Bell Ckt LTR4 512 Master Clock 1 Clk 2 Ckt LTR8 512 Master Clock 1 Clk 6 Ckt LTR8 512M Master Clock w Modem DDC2 RS 2 Digital Wall Clock 115v DDC2 RS 24 2 Digital Wall Clock 24v DDC4 RS 4 Digital Wall Clock 115v DDC4 RS 24 4 Digital Wall Clock 24v An included RS 232 interface provides a periodic Time Stamp transmission MM DD YYYY HH MM SS cr for use by computing systems having custom software to incorporate accurate date and time records in their applications 9600 N 8 1 Use of this option requires Lathem cable Part No SAE0370 to be ordered separately Simple DIP Switch set up enables the installer to specify local Time Zone Daylight Savings Time corrections and output formats An LED indicator shows Signal Reception Protocol Mode The LTR GPS may receive its power from an LTRx 512 series Master Clock using 2 cable pair if the distance is less than 200ft else power is provided locally by a 9VAC Power Adapter Warranty Digital Display Wall Clock Guide Page 54 The LTR GPS package includes LTR GPS Satellite Synchronizer 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
31. her Clocks Master Clock Correction Clock will correct minutes hourly at HH 59 and Set switches 1 5 of S1 as shown hour and minutes twice daily at 5 59 eh i Indicates depressed side of switch Wiring applies to secondary wall clocks such as Lathem type SS Cincinnati D10 IBM 77 Series A e 8 Simplex 77 Series 93 9 91 9 941 9 943 9 5 A A A A y y A OPEN Stromberg 3000 Page 23 Digital Display Wall Clock Guide DDC2 4 RS Wiring 3 Wire Synchronous 24VAC Correction pp g E 115VAC GRND A A D E Local AC IN gt Power AC RTN T E 4 4 ZAVAC Return b S Eromi Other Clocks Master Clock Correction Clock will correct minutes hourly at HH 59 and hour and minutes twice daily at 5 59 Set switches 1 5 of S1 as shown A a Indicates depressed side of switch Wiring applies to secondary wall clocks such as Lathem type SS Cincinnati DIO IBM 77 Series VACA iS Simplex 77 Series 93 9 91 9 941 9 943 9 y A A A A F i A Stromberg 3000 OPEN DDC2 4 RS Wiring Digital Display Wall Clock Guide Page 24 3 Wire minute Impulse 59 Minute re KKE 115VAC GRND A A E O gt Local AC IN y Powe AC RTN g a AG 24VDC A gt From e Master Clock C ll Other Clocks Clock must be set within 20 minutes of actual time Set switches 1 5 of S1 as shown for master to synchronize Use of a 9Volt alkaline battery is recommended to avoid resets after
32. i D8 Faraday Honeywell ST402A DDC2 4 RS Wiring Digital Display Wall Clock Guide Page 30 Simplex 59 Minute Dual Motor 14d 14d LHM Nug LHM N18 115VAC Run r From AC Return o Master Clock Correction Other Clocks lock t be set t hour Clock will OCE OAT De Set Oropa Bon ETE Set switches 1 5 of S1 as shown correct minutes hourly at HH 58 Use of a 9Volt alkaline battery is recommended to avoid resets i Indicates depressed side of switch KEEA For 24V AC correction use wiring shown on page 23 OPEN Page 31 Digital Display Wall Clock Guide DDC2 4 RS Wiring Simplex 45 Minute Dual Motor 14d 14d LHM Nug LHM N18 115VAC Run n From AC Return o Master Clock Correction Other Clocks Clock must be set to proper hour Clock will Set switches 1 5 of S1 as shown correct minutes hourly at HH 45 Use of a 9Volt alkaline battery is recommended to avoid resets i Indicates depressed side of switch Ba annn For 24V AC correction use wiring shown on page 23 OPEN DDC2 4 RS Wiring Digital Display Wall Clock Guide Page 32 Edwards Dual Motor 14d 14d LHM Nug LHM N18 115VAC Run n From AC Return o Master Clock Correction Other Clocks Clock must be set to actual time Use of a 9Volt Set switches 1 5 of S1 as shown alkaline battery is recommended to avoid resets after power fai
33. ic AR 2A 2 Wire Dual Voltage amp m ren E 115VAC GRND ACA nm Z Local AC IN ES Power AC RTN gt o L T 4 4 24vpc 4gvpc AB j To Dem Other Clocks Master Clock PC 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 id after power failures Indicates depressed side of switch ewes OPEN DDC2 4 RS Wiring Digital Display Wall Clock Guide Page 28 Standard Electric AR 2 2 Wire Dual Voltage amp 2 E E 115 VAC GRND ACA m Z Local AC IN Es PS Power AC RTN gt o L I 4 4 24vpc 4gvpc AB gt To pron Other Clocks Master Clock PC 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 Indicates depressed side of switch TABA after power failures OPEN Page 29 Digital Display Wall Clock Guide DDC2 4 RS Wiring Synchronous Wired E 113 14a 1HM Nug LHM N18 115VAC Run gt F From AC Return o 0 Master Clock Correction Other Clocks gt 7 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 A Indicates depressed side of switch A Daa nn For 24V AC correction use wiring shown on page 23 OPEN Wiring applies to secondary wall clocks such as Cincinnat
34. ion 1 2 314 5 Secondary Clock Selection 0 Closed 1 Open Factory Default o 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 Cincinnati D8 Honeywell ST402A Faraday Synchronous Simplex 59 Minute Dual Motor Simplex 45 Minute Dual Motor Edwards Dual Motor Standard Electric AR 3 3 Wire Minute Impulse National Synchronous Wired Stromberg Synchronous Wired Cincinnati D1 Cincinnati D6 Edwards 2406 2 Wire Impulse Alternating 24VDC Electronic Coded 3510 Hz Receiver Required Straight Frequency 3510 Hz Receiver Required 3 Wire Minute Impulse 5 gn Minute 3 Wire Minute Impulse 44 Minute QO O m O ROL ROR OLR Ol O O O 0l ol ol olol olol olol ojlo olol lol oloo Oy Rye ye m oloo o R aeojeajeajio iOjoj ojojojojojojojojojojojojo ojojojojojo O r r j eri eijo O ojojojojojo 2 Wire Reverse Polarity Minute Impulse 59 Minute Table 2 S1 6 7 RS 485 Baud Rate Table 3 S1 8 12 24 Hour Display 6 7 Baud Rate 8 12 24 Hour Display 0 Closed 1 Open 0 Closed 1 Open
35. le Ceiling Mount Kit for DDC2 or DDC4 Series Double Wall Mount Kit for DDC2 Series Double Wall Mount Kit for DDC4 Series 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 Timer Control Panel to use the DDC2 4 Series as a count up down timer Master Clocks capable of synchronizing the DDC Series Wall Clocks as well as many other brands and types of wall clocks Available configurations include 8 6 4 and 2 bell circuits Master Link software for remote programming of the LTR8 512 and LTR8 512M Master Clocks RS232 to RS485 signal converter for use with Master Link to extend the distance of Master Clocks up to 4000 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 SAMO0630 Kit middle Includes 1 Mounting Plate Assembly 2 Modified End Caps 2 Chase Nipples 4 10 Screws 8 10 Lock Washers 4 10 Hex Nuts SAM0625 Kit right Includes 1 Mounting Plate Assembly 2 Modified End Caps 1 End Cap Support 2 Chase Nipples 4 10 Screws 8 10 Lock Washers 4 10 Hex Nuts 4 6 Screws 4 6 Lock Washers 4 6 Hex Nuts Page 5 Digital Display Wall Clock Guide Configuring the DDC Series Wall Clock Setting the DIP Switches DDC2 DDC4 Series DDC2 Remove
36. lures i Indicates depressed side of switch KEE For 24V AC correction use wiring shown on page 23 OPEN Page 33 Digital Display Wall Clock Guide DDC2 4 RS Wiring Standard Electric AR 3 3 Wire Minute Impulse amp m wo W lt lt W 115VAC GRND _ x m mi O Local AC IN z z z Power AC RTN o 3 a A 2avpc 4svpc 24 VDC Pulse From 48 VDC Correction es Master Clock Com mon Clock must be set to actual time Use of a 9Volt alkaline battery is recommended to avoid resets Set switches 1 5 of S1 as shown after power failures i Indicates depressed side of switch MICA OPEN DDC2 4 RS Wiring Digital Display Wall Clock Guide Page 34 National Synchronous Wired U W WO Fr gt JJ En A A Z E T T TI TI 4 msvac Run x From AC Return 0 Other Clocks Master Clock Correction e Clock will correct minutes hourly at HH 00 and Set switches 1 5 of S1 as shown hour and minutes twice daily at 6 00 i Indicates depressed side of switch EAE For 24V AC correction use wiring shown on page 23 OPEN Page 35 Digital Display Wall Clock Guide DDC2 4 RS Wiring Stromberg Synchronous Wired 56 Minute 14d 14d 1HM Nug 1HM Ma 115VAC Run a From AC Return e o Master Clock Correction Other Clocks lock will t minutes hourly at HH d TER ee is Set switches 1 5 of S1
37. ndix 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 Data Format 0 112233445566777Z CR The data string is compiled of a total of 16 characters These characters represent the following 0 Address byte Command for Time update 11 Hex for Seconds 01 59 22 Hex for Minutes 00 59 33 Hex for Hour 00 23 44 Hex for Day of Week Sunday 0 55 Hex for Month 01 12 66 Hex for Date 01 31 777 Hex for Year offset from 1984 000 127 Z The Checksum 1 s compliment of the mod 64 sum of all characters in the string except the CR and the Checksum CR Carriage Return Transfer of the above string must be done at 9600 Baud 8 Data Bits 1 Stop Bit and No Parity 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 47 Digital Display Wall Clock Guide DDC2 4 RS 485 Wiring OMCII to DDC2 RS 4 RS 115VAC Local BLK Power BLK as
38. ntrol Panel allow the DDC Series Wall Clocks to act as a count up or count down timer as well as displaying the normal time The optional Timer Control Panel is required to use this feature The DDC Series Wall Clocks can be mounted directly to a wall to a single gang outlet box or with optional mounting kits as double faced units from the wall or ceiling During power failures a 9 Volt alkaline battery not supplied can maintain the DDC Series Wall Clock s internal time keeping although the display is blank during power failures Clock Operation When the Digital Display Series Wall Clocks are set to operate as stand alone or synchronous wired secondary clocks the time base is derived from the AC power source The frequency 50Hz or 60Hz is automatically detected when power is applied The clocks then initialize to 12 00AM and maintain time by counting the line frequency Corrective clocks will begin synchronization routines Accuracy is related directly to the accuracy of the line frequency With the DDC TC option the Digital Display Series Wall Clocks can act as a count up or count down timer as well as running as a stand alone or synchronous wired secondary clock When the Digital Display Series Wall Clocks are set to operate as impulse secondary clocks the master clock controls time totally Time will only advance when pulses are received from the master clock Should the master clock lose power the wall clocks would hold at the time
39. of this product during warranty or with any Lathem authorized service centers contact Lathem Time at the address below Lathem Time 200 Selig Drive SW Atlanta GA 30336 404 691 0405 www lathem com Copyright 2003 Lathem Time Corporation All rights reserved
40. proper screws for the single gang box and tighten securely Route the 6 position plug and optional RS485 cable to the circuit board assembly and attach 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 Q EA SJ For 1 2 gang box f gue conduit mount Keyholes for wall mount Figure 3 Double Mount Wall DDC2 Requires optional mounting kit 6S AM0630 DDC4 Requires optional mounting kit SAMO0625 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 Required wiring should be available through the gang box at time of installation Remove the two chase nipples from the mounting plate posts Run the required wiring from the gang box through one of the mounting posts of the mounting plate Secure the mounting plate securely to the gang box with the proper screws not supplied 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 head screws from the left an
41. rd assembly back into the case replace the end cap and secure with the four phillips head screws DDC4 RS Remove the two phillips head screws from the left or the right end cap and remove Slide the front panel assembly out of the case Carefully flip the front panel assembly over and lay it face down on a clean smooth work surface Locate position J2 on the left upper side of the back of the front panel See figure 2 page 9 Lift the shunt straight up off the single pin of position J2 Align the shunt to cover both pins of position J2 and press firmly into place Slide the front panel display back into the case replace the end cap and secure with the two phillips head screws Note Only the LAST clock on the line needs position J2 closed Leave all other clocks open Battery Usage DDC2 DDC4 Series Depending on the secondary selection type the 9 Volt alkaline battery not included performs different functions and may be required for proper operation DDC2 4 RS DDC2 4 RS 24 When used as a secondary type clock the 9 Volt alkaline battery not included will retain the time that the power failure occurred although the display will go blank When power is restored correction signals from the master clock will advance the wall clock to the proper time When used as a secondary type clock in systems that do not provide a 12 Hour correction signal the 9 Volt alkaline battery not included is required for proper operation Without
42. tes of actual time for master to synchronize Use of a 9Volt alkaline battery is recommended to avoid resets after power failures Set switches 1 5 of S1 as shown il Indicates depressed side of switch AMAN OPEN DDC2 4 RS Wiring Digital Display Wall Clock Guide Page 42 3 Wire Minute Impulse 44 Minute W U Ww lt lt U i m O J msvac GRND qu AR Fell Local AC IN E Power AC RTN gt E E lt 4 24VDC A To From B z Other Clocks Master Clock C Clock must be set within 20 minutes of actual time for master to synchronize Use of a 9Volt alkaline Set switches Sor lasshown battery is recommended to avoid resets after power failures il Indicates depressed side of switch OTRA OPEN Page 43 Digital Display Wall Clock Guide DDC2 4 RS Wiring 2 Wire Reverse Polarity Minute Impulse 59 Minute G w w lt lt nsvac JGRND oi O a Local ae Power AC RTN e A 24VDC AB n From Other Clocks Master Clock PC Clock must be set within 20 minutes of actual time for master to synchronize Use of a 9Volt alkaline setswitches l yof Siras shown battery is recommended to avoid resets after power failures i Indicates depressed side of switch EE OPEN 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 24
43. 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 carefully flip the circuit board assembly over and lay it face down on a clean smooth work surface Locate switch SInear the center of the circuit board and set the DIP switches See figurel below according to Tables 1 2 and 3 on the following page for the proper configuration Slide the lens and circuit board assembly back into the case replace the end cap and secure with the four phillips head screws DDC4 Remove the two phillips head screws from the left or the right end cap and remove Slide the front panel assembly out of the case Carefully flip the front panel assembly over and lay it face down on a clean smooth work surface Locate switch SInear the center of the circuit board and set the DIP switches See figure 1below according to Tables 1 2 and 3 on the following page for the proper configuration Slide the front panel display back into the case replace the end cap and secure with the two phillips head screws Switch Sl 123 4 5 6 7 8 12 or 24 Hour Format OPEN Default Shown 12 Hour Switches 1 5 Switches 6 amp 7 Secondary Clock Type Baud Rate Default Shown Stand Alone Default Shown 9600 Baud Depressed Side of Switch Figure 1 Digital Display Wall Clock Guide Page 6 DIP Switch Settings Table 1 S1 1 5 Secondary Clock Correct
44. the top of each DDC2 clock Line the two posts from the mounting plate up with the vent holes of the DDC2 clocks Insert the chase nipples through the vent holes and secure to the mounting plate with a 15 16 wrench Slide the circuit board assemblies in partially Secure the required wiring and install the battery if used Slide the circuit board assemblies in fully along with the lenses Install the end caps and secure each with its four screws Note When mounting DDC2 clocks the short side of the mounting plate must be parallel to the long side of the clocks mounting plate 10 hex nuts a DDC2 cases a a 10 lock washers ca AN 10 screws Figure 6 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 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 Note At this point if the DDC4 clocks will be mounted too near a wall on one side to secure the end caps install the wall side end caps now Remove the center vent c
45. the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help 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 Copyright O 2001 Lathem Time Corporation All rights reserved Lathem Time Corporation 200 Selig Drive SW Atlanta GA 30336 www lathem com Document Number USG0028E Revised 05 28 2008 Table of Contents IO UC ON iia A A id 1 Clock Operator A eae hea ane 1 About this Madalena A onde Mere nee Beata near aes 2 Optional Accessories ici digests Me ated egestas gat Seiten save ea Meat aes 3 Configuring the DDC Series Wall ClOCK eee eceeceseeceeceeseeseceaecnsecseecseceseessecsaessseseeeeseeeaeeeaeseaeesseeneeeaeens 4 Setting the DIP Switches DDC2 DDC4 Series eee ee cece ceecseeeneeeseceseceseseeseeeseeeaeseaesnseeseeeaeens 5 DDC pisses tie E aed Agee dere nastiest Seat wea 5 DDCA visi ia A Mies te eae ws Beata ana 5 DIP Switch Setini Sienaan A dete Raed Sear pene Nae 6 Configuring RS485 Communications DDC2 4 RS Series woo cee eee eeceseceseeeseseseseeeeeeeseenaeenaeenseeseeeneees 7 DDR Susini ta
46. them If it becomes necessary to send the product or any defective part to Lathem or any authorized service dealer the product must be shipped in its original carton or equivalent fully insured with shipping charges prepaid Lathem will not assume any responsibility for any loss or damage incurred in shipping WARRANTY DISCLAIMER AND LIMITATION OF LIABILITY Except only the limited express warranty set forth above the products are sold with no expressed or implied warranties of any kind and the implied warranties of merchantability and fitness for a particular purpose are hereby expressly disclaimed 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 In the event any limited remedy given herein shall be deemed to have failed of its essential purpose Lathem s maximum liability shall be to refund the purchase price upon return of the product Proof of date of purchase from Lathem or an authorized Lathem reseller is required for warranty service on this product This Warranty grants specific legal rights Additional legal rights which may vary by locale may also apply Should any difficulties arise with the performance
47. two holes in the case up to the single gang box and insert proper screws for the single gang box and tighten securely Route the 6 position plug and optional RS485 cable to the circuit board assembly and attach Slide the lens and circuit board assembly back into the case replace the end cap and secure with the four phillips head screws DDC4 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 16 of side clearance on one side in order to remove the front panel Remove the two phillips head screws from the left or the right end cap and remove Slide the front panel assembly out of the case and set aside Remove the desired vent cap that any required wiring will route through If the wiring will be installed through the back of the clock conduit access route the fly leads of the clock s Cable Harness Assembly from the interior of the clock through the hole in the Clock s rear plate Use wire nuts or crimp connectors to join these leads with the power and synch signal cable in the gang box behind the clock to eliminate possible snagging when the circuit board assembly is removed or replaced If RS 485 signaling is used attach the signal pair to the mini Terminal Block Plug and pass the cable from behind the clock through the hole into the clock s interior Line the two holes in the case up to the single gang box and insert
48. uide 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 DDC4 RS Remove the two phillips head screws from the left or the right end cap and remove Slide the front panel assembly out of the case Carefully flip the front panel assembly over and lay it face down on a clean smooth work surface Remove one of the vent caps from the case of the wall clock and route the power cord through it to the back of the display panel If the power cord will be routed through the back of the clock conduit access route the cord through the gang box and conduit access hole to the back of the circuit board assembly Strip away 1 2 of the protective shield from each wire of the power cord Locate the two black wires leading from J1 see figure 2 page 9 and attach the AC In line of the cord to one and the AC Return line to the other normally black is AC In and white is 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 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 Th

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