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Lathem
DDC4, DDC2
manual
Installation & Users Guide
Models:
DDC2
DDC4
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Specs
Install
Board Layout Diagram
Timer Control
Secondary Wiring
Warranty
Optional Accessories
DIP Switch Settings
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Digital Display Wall Clock
DDC2 / DDC4 Series
Installation & User's Guide
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Contents
Installation & Users Guide
Lathem Time Corporation
Table of Contents
Page
Page
Page
Clock Operation
Introduction
About this Manual
DDC-TC
Optional Accessories
Page
Setting the DIP Switches DDC2 / DDC4 Series
Configuring the DDC Series Wall Clock
DIP Switch Settings
Battery Usage DDC2 / DDC4 Series
Configuring RS485 Communications DDC2/4-RS Series
DDC2/4-RS / DDC2/4-RS-24
Power Cord Installation DDC2/4-RS
Battery Installation DDC2 / DDC4 Series
Secondary Wiring
Wiring Installation DDC2/4-RS Series
RS485 Wiring
DDC-TC Wiring
Replacing an Existing DDC4 Wall Clock
Board Layout Diagram
Mounting to a Wall
Mounting DDC2 / DDC4 Series
Mounting 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 Time
Grnd
Appendix a DDC2-RS / 4-RS Secondary Clock Wiring Diagrams
BLK
Stand-Alone 115VAC
BRN / WHT BLU / WHT
Wire Synchronous 115VAC
Grnd BLK
Wire Synchronous 24VAC
AC RTN
BLU
YEL / WHT VIO / WHT BRN / WHT
Wire minute Impulse 59th Minute
BLK YEL / WHT VIO / WHT BRN / WHT
Wire Minute Impulse 59th Minute With 12 Hour Correction
Standard Electric Synchronous
BLK YEL
Standard Electric AR-2A 2-Wire Dual Voltage
Standard 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 Impulse
National Synchronous Wired
Stromberg Synchronous Wired 56th Minute
Cincinnati D1
Common
Cincinnati D6, Edwards
BLK VIO / WHT YEL / WHT
VIO / WHT YEL / WHT
Wire Pulse Alternating 24VDC
Electronic Coded
Grnd AC RTN BLK BLU
Straight 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 Wiring
RS485 Data Format
Appendix C RS485 Wiring Diagrams
GND
OMC
Omcii to DDC2-RS / 4-RS
LTR0 to DDC2-RS / 4-RS
BLK H
LTR4 / 8-512 to DDC2-RS / 4-RS
Terminal # Signal JP4 Connection
Wiring
Appendix D DDC-TC Timer Control Panel
Timer Control
Installation
As a Count Down Timer
Operation As a Count Up Timer
DWA-S
Appendix E LTR-GPS Satellite Receiver / Clock Synchronizer
Page
Connecting to a Lathem DDC2-RS or DDC4-RS Digital Clock
DDC2 / DDC4
Appendix F Specifications
Limited One-Year Limited Warranty
Appendix G Warranty
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