Lathem
DDC2, DDC4
manual
Specification
Install
Board Layout Diagram
Timer Control
Secondary Wiring
Warranty
Optional Accessories
DIP Switch Settings
Page 6
Page 5
Page 7
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Page 5
Page 7
Contents
Installation & Users Guide
Lathem Time Corporation
Table of Contents
Page
Page
Page
Introduction
Clock Operation
About this Manual
Optional Accessories
DDC-TC
Page
Configuring the DDC Series Wall Clock
Setting the DIP Switches DDC2 / DDC4 Series
DIP Switch Settings
Configuring RS485 Communications DDC2/4-RS Series
Battery Usage DDC2 / DDC4 Series
DDC2/4-RS / DDC2/4-RS-24
Battery Installation DDC2 / DDC4 Series
Power Cord Installation DDC2/4-RS
RS485 Wiring
Wiring Installation DDC2/4-RS Series
Secondary Wiring
DDC-TC Wiring
Board Layout Diagram
Replacing an Existing DDC4 Wall Clock
Mounting DDC2 / DDC4 Series
Mounting to a Wall
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
Setting the Time
Time Formats
BLK
Appendix a DDC2-RS / 4-RS Secondary Clock Wiring Diagrams
Grnd
Stand-Alone 115VAC
Wire Synchronous 115VAC
BRN / WHT BLU / WHT
AC RTN
Wire Synchronous 24VAC
Grnd BLK
BLU
Wire minute Impulse 59th Minute
YEL / WHT VIO / WHT BRN / WHT
Wire Minute Impulse 59th Minute With 12 Hour Correction
BLK YEL / WHT VIO / WHT BRN / WHT
Standard Electric Synchronous
Standard Electric AR-2A 2-Wire Dual Voltage
BLK YEL
Standard Electric AR-2 2-Wire Dual Voltage
Synchronous Wired
Simplex 59th Minute Dual Motor
Simplex 45th Minute Dual Motor
Edwards Dual Motor
Standard Electric AR-3 3-Wire Minute Impulse
BLK YEL / WHT VIO / WHT BRN/ WHT
National Synchronous Wired
Stromberg Synchronous Wired 56th Minute
Common
Cincinnati D1
BLK VIO / WHT YEL / WHT
Cincinnati D6, Edwards
Wire Pulse Alternating 24VDC
VIO / WHT YEL / WHT
Grnd AC RTN BLK BLU
Electronic Coded
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
DDC2-RS-24 / DDC4-RS-24 Wiring
BLK BRN / WHT BLU / WHT
Appendix C RS485 Wiring Diagrams
RS485 Data Format
OMC
GND
Omcii to DDC2-RS / 4-RS
BLK H
LTR0 to DDC2-RS / 4-RS
Terminal # Signal JP4 Connection
LTR4 / 8-512 to DDC2-RS / 4-RS
Appendix D DDC-TC Timer Control Panel
Wiring
Installation
Timer Control
Operation As a Count Up Timer
As a Count Down Timer
Appendix E LTR-GPS Satellite Receiver / Clock Synchronizer
DWA-S
Page
Connecting to a Lathem DDC2-RS or DDC4-RS Digital Clock
Appendix F Specifications
DDC2 / DDC4
Appendix G Warranty
Limited One-Year Limited Warranty
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