Lathem DDC2 manual

Digital Display Wall Clock

DDC2 / DDC4 Series

Installation &

User's Guide

Contents

Main Page Table of Contents Page Page Page Introduction Clock Operation About this Manual Optional Accessories Page Configuring the DDC Series Wall Clock Setting the DIP Switches - DDC2 / DDC4 Series DDC2 DDC4 DIP Switch Settings Configuring RS485 Communications - DDC2/4-RS Series DDC2-RS DDC4-RS Battery Usage - DDC2 / DDC4 Series DDC2/4-RS / DDC2/4-RS-24 Battery Installation - DDC2 / DDC4 Series DDC2 DDC4 Power Cord Installation - DDC2/4-RS DDC2-RS Wiring Installation - DDC2/4-RS Series Secondary Wiring RS485 Wiring DDC-TC Wiring Replacing an Existing DDC4 Wall Clock Board Layout Diagram - + Mounting - DDC2 / DDC4 Series Mounting to a Wall DDC2 DDC4 Mounting to a Single Gang Box Page Page DDC2 (Double Mount - Wall) DDC4 (Double Mount - Wall) Double Mount - Ceiling DDC2 (Double Mount - Ceiling) DDC4 (Double Mount - Ceiling) Setting the Time Time Formats 24 Hour Format 12 Hour Format Appendix A - DDC2-RS / 4-RS Secondary Clock Wiring Diagrams Stand-Alone (115VAC) GRND AC IN AC RTN BLK BLK 3-Wire Synchronous (115VAC) Page Page Page Page Page Page Page Simplex 59 Minute Dual Motor Simplex 45 Minute Dual Motor Page Page Page Page Page Page Page Page Page Page Page Page Appendix B - DDC2-RS-24 / DDC4-RS-24 Wiring - + DDC2-RS-24 / DDC4-RS-24 Wiring Appendix C - RS485 Wiring Diagrams RS485 Data Format OMCII to DDC2-RS / 4-RS 11 30 GND of JP4 : Trans - OMC II LTR 0 BLK D- of JP4 GND of JP4 ORN GRY D+ of JP4 11 30 LTR4 / 8-512 D+ D- D- of JP4 D+ of JP4 : Appendix D - DDC-TC Timer Control Panel Wiring Installation Operation As a Count Up Timer As a Count Down Timer Appendix E - LTR-GPS Satellite Receiver / Clock Synchronizer Page Page Appendix F - Specifications Appendix G - Warranty Limited One-Year Limited Warranty