TYPE 27—Simplex 2310 Dual Motor

Type 27 secondary clocks have the same hourly corrections as type 09, with the addition of 12-hour corrections as for type 03.

Power is normally applied to the 1 RPM run motor. Each hour, from HH:58:05 through HH:58:59, power is removed from the run motor and applied to the fast advance motor. During manual clock corrections, power is applied to both motors for 4 minutes and 15 seconds.

During normal operation, 120Vac is applied to the run motor. A 15-minute correction signal on the correction motor line causes a 12-hour correction from 5:12:00 to 5:28:00. This occurs twice daily (AM and PM). Run motor power is connected during the 12-hour correction. A 29-second signal is applied to the correction motor line from HH:59:30 to HH:59:59 to cause hourly corrections. During hourly corrections, power is disconnected from the run motor line.

X = Normally open contact

I = Normally closed contact

1 = V250LA4 MOV or equal

 

 

 

 

 

 

 

CODE 09 = 59TH MIN.

 

 

 

 

RELAY

 

 

RELAY

 

 

 

 

CODE 10 = 45TH MIN.

 

 

K5 (K7)

 

 

 

 

 

 

 

K6 (K8)

 

 

 

 

 

 

 

 

x

 

x

I

 

I

 

 

 

 

 

 

 

x

 

 

CLK1 OR CLK2

 

 

 

 

 

 

 

MASTER CLOCK

1

2

3

4

5

6

7

8

FIELD CONNECTIONS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FAST ADVANCE MOTOR

10 ASB MAX.

 

 

 

 

 

 

 

1

120Vac

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 RPM RUN MOTOR

 

 

1

 

 

 

 

 

 

AC RTN

 

 

 

 

 

 

 

RETURN

Figure B-28

Simplex 2310 Dual Motor

Types 28, 29, and 30

For wiring information on Type 28 (Stromberg 12-hour), Type 29 (Type 01 Special), and Type 30 (Type 14 Special) clocks, contact Lathem Time Corporation.

24A715/24A715M Master Clock Installation Manual

B-31