Simplex 4208 - Page 47

TYPE 4208 “V”
NON-SUPERVISED DC MARCH TIME PANEL
TYPE 4208 “2”
SUPERVISED DC MARCH TIME PANEL
INTRODUCTION
The “V” and “Z” panels are used to provide a
march time of approximately 120 pulses per min-
ute on two circuits of alarm signaling devices.
The “V” panel is not supervised.
The “Z” panel is supervised.
“V” PANEL
CIRCUIT OPERATION (FIG. 25)
POWER FAILURE CIRCUIT
MARCH TIME CIRCUIT
Same as “C” and “N” panel Power Failure Cir-
cuit except that diode D5 in the “C” and “N” pan-
els is referred to as diode D6 in the “V” and “Z”
panels.
An “alarm” signal (-24VDC) from terminal 7 of
the “A” or “AX” panel is applied to “V” or “Z”
panel terminal 7A which energizes the march time
motor. Current flows from terminal 7A, through
resistor R3, the march time motor (starting the
motor), diode D5 to +24VDC at terminal 6.
ALARM CIRCUIT
Same as “C” and “N” panel Alarm Circuit (See
page 17).
When the march time motor shaft rotates, it op-
erates a cam that cycles switch SW1 at the march
time rate of 120 pulses per minute. Switch SW 1
sends the pulsing “alarm” signal to alarm relay K2.
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