Lathem DDC2 manual Grnd, Ac Rtn, Blk Brn / Wht Blu / Wht, Wire Synchronous 24VAC Correction

Page 23 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring

3-Wire Synchronous (24VAC Correction)

	H
	M
115VAC	GRND
Local	AC IN
Power	AC RTN
24VAC	Return
From
Master Clock	Correction

BLK

BLK

BRN / WHT

BLU / WHT

To

Other Clocks

Clock will correct minutes hourly at HH:59 and hour and minutes twice daily at 5:59.

Wiring applies to secondary wall clocks such as:

Lathem type SS Cincinnati D10 IBM 77 Series

Simplex 77 Series, 93-9, 91-9, 941-9, 943-9

Stromberg 3000

Set switches 1-5 of S1 as shown.

Indicates depressed side of switch

1 2 3 4 5 6 7 8

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