Cooper Industries Inc.
Crouse-Hinds Division IF 1551
PO Box 4999, Rev 1
Syracuse, New York 13221 • U.S.A. New 01/08
Copyright© 2007, Cooper Industries, Inc.
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The MAN LED is off.
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One of the mode LEDs is glowing
according to the amount of skylight:
DAY, TWI, or NITE.
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The I 1 SYNC LED on PCB100 is
blinking (it should blink in sync with
the flashes on the structure; 1 second
for standard mode, or 1.5 seconds for
catenary mode).
Manual Operation
Select the desired flash intensity by using
the Control switch.
Flash Delay
An operator can synchronize the lights
with those on a nearby structure by placing
the Control switch to DELAY until the
lights on both structures are observed to
flash simultaneously. This may cause
some of the Tier and Beacon Display
LEDs to temporarily switch to RED.
Failure Detection
Monitoring provides an alarm if a beacon
becomes inoperative. Alarm consists of
illuminating the red section of an LED on
the front panel accompanied by operation
(dropping out) of relay K501. Absence of
a signal (zero condition) at an assigned
beacon position results in an alarm signal
after three successive flash cycles.
Transient fail memory makes it easier to
identify a beacon that intermittently fails
to flash or one that fails only long enough
to cause an alarm and then resumes
flashing. When a failure occurs, the circuit
freezes the failure in memory. Pressing the
Display Switch shows the failed beacon
LED as red.
Panel Board — PCB200
All front panel switches and LEDs are
mounted on this circuit board.
