Page 41 Digital Display Wall Clock Guide DDC2 / 4-RS Wiring
3-Wire Minute Impulse (58th Minute)
B
C
123 4 5
Clock must be set within 20 minutes of actual time
for master to synchronize. Use of a 9Volt alkaline
battery is recommended to avoid resets after power
failures.
OPEN
678
Set switches 1-5 of S1 as shown.
Indicates depressed side of switch
24VDC
From
Master Cloc
k
To
Other Clocks
A
BRN / WHT
GRND
AC IN
A
C RTN
115VAC
Local
Powe
r
VIO / WHT
YEL / WHT
BLK
BLK
H
M