Lathem DDC4 manual DDC2

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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 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 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.

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Contents Installation & Users Guide Lathem Time Corporation Table of Contents Page Page Page Clock Operation IntroductionAbout this Manual DDC-TC Optional AccessoriesPage Setting the DIP Switches DDC2 / DDC4 Series Configuring the DDC Series Wall ClockDIP Switch Settings Battery Usage DDC2 / DDC4 Series Configuring RS485 Communications DDC2/4-RS SeriesDDC2/4-RS / DDC2/4-RS-24 Power Cord Installation DDC2/4-RS Battery Installation DDC2 / DDC4 SeriesDDC-TC Wiring Wiring Installation DDC2/4-RS SeriesSecondary Wiring RS485 WiringReplacing an Existing DDC4 Wall Clock Board Layout DiagramMounting to a Wall Mounting DDC2 / DDC4 SeriesMounting to a Single Gang Box DDC2 Double Mount Wall DDC2 Double Mount Wall DDC4 Double Mount Wall Double Mount Ceiling DDC2 Double Mount Ceiling DDC4 Double Mount Ceiling Time Formats Setting the TimeStand-Alone 115VAC Appendix a DDC2-RS / 4-RS Secondary Clock Wiring DiagramsGrnd BLKBRN / WHT BLU / WHT Wire Synchronous 115VACBLU Wire Synchronous 24VACGrnd BLK AC RTNYEL / WHT VIO / WHT BRN / WHT Wire minute Impulse 59th MinuteBLK YEL / WHT VIO / WHT BRN / WHT Wire Minute Impulse 59th Minute With 12 Hour CorrectionStandard Electric Synchronous BLK YEL Standard Electric AR-2A 2-Wire Dual VoltageStandard Electric AR-2 2-Wire Dual Voltage Synchronous Wired Simplex 59th Minute Dual Motor Simplex 45th Minute Dual Motor Edwards Dual Motor BLK YEL / WHT VIO / WHT BRN/ WHT Standard Electric AR-3 3-Wire Minute ImpulseNational Synchronous Wired Stromberg Synchronous Wired 56th Minute Cincinnati D1 CommonCincinnati D6, Edwards BLK VIO / WHT YEL / WHTVIO / WHT YEL / WHT Wire Pulse Alternating 24VDCElectronic Coded Grnd AC RTN BLK BLUStraight Frequency Wire Minute Impulse 58th Minute Wire Minute Impulse 44th Minute Wire Reverse Polarity Minute Impulse 59th Minute Appendix B DDC2-RS-24 / DDC4-RS-24 Wiring BLK BRN / WHT BLU / WHT DDC2-RS-24 / DDC4-RS-24 WiringRS485 Data Format Appendix C RS485 Wiring DiagramsGND OMCOmcii to DDC2-RS / 4-RS LTR0 to DDC2-RS / 4-RS BLK HLTR4 / 8-512 to DDC2-RS / 4-RS Terminal # Signal JP4 ConnectionWiring Appendix D DDC-TC Timer Control PanelTimer Control InstallationAs a Count Down Timer Operation As a Count Up TimerDWA-S Appendix E LTR-GPS Satellite Receiver / Clock SynchronizerPage Connecting to a Lathem DDC2-RS or DDC4-RS Digital Clock DDC2 / DDC4 Appendix F SpecificationsLimited One-Year Limited Warranty Appendix G Warranty
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