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Digital Display Wall Clock Guide

DDC2 / 4-RS Wiring

 

 

 

3-Wire Minute Impulse (59th Minute With 12 Hour Correction)

 

H

 

 

M

 

115VAC

GRND

BLK

Local

AC IN

 

Power

AC RTN

 

24VDC

A

 

From

B

 

Master Clock

C

 

BLK

YEL / WHT

VIO / WHT

BRN / WHT

To

Other Clocks

Clock will correct minutes hourly at HH:58 and hour and minutes twice daily at 5:58.

Wiring applies to secondary wall clocks such as:

Lathem ISC 3-Wire 12Hour

Simplex 91, 941

Set switches 1-5 of S1 as shown.

Indicates depressed side of switch

1

2

3

4

5

6

7

8

OPEN

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Image 31
Lathem DDC2 manual Blk Yel / Wht Vio / Wht Brn / Wht, Wire Minute Impulse 59th Minute With 12 Hour Correction