Lathem Dukane 24A715 Manuel d'utilisateur télécharger pdf (Page 58)

TYPE 12—Cincinnati D6 Clocks

Normal pulsing is sent out on lines A and C from second 58 through second 00 each

minute. From minute 59 through minute 49, line A is positive with respect to line C.

From minute 50 through minute 58, except from 4:49 through 5:55 AM and PM, line C is

positive with respect to line A.

To provide hourly corrections, 20 rapid pulses at 0.5Hz are transmitted on lines A and C,

line C being positive with respect to line A, during the 59th minute of each hour from

second 10 through second 50.

To provide twelve-hour corrections, 20 rapid pulses at 0.5Hz are transmitted from second

10 through second 54 of each minute from 5:00:10 through 5:30:54 AM and PM.

Manual clock advances and daylight saving advances cause the master clock to transmit

62 pulses (one second ON and one second OFF at 0.5Hz). The first five pulses are trans

mitted with line A positive with respect to line C. The remainder of the pulses are

transmitted with line A negative with respect to line C. Normal minute pulses are inhib

ited during these pulses.

B-16

24A715/24A715M Master Clock Installation Manual

12345678

CLK1 OR CLK2

RELAY

K6 (K8)

RELAY

K5 (K7)

MASTER CLOCK

FIELD CONNECTIONS

X = Normally open contact

I = Normally closed contact

10 ASB MAX.

–

= V250LA4 MOV or equal

CODE 09 = 59TH MIN.

CODE 10 = 45TH MIN.

= 1N4004 diode or equal

24–36Vdc

Figure B-14

Cincinnati D6 Clocks

1 2 ... 53 54 55 56 57 58 59 60 61 62 63 ... 85 86

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Lathem Dukane 24A715 Manuel d'utilisateur Page 58