TWR Lighting E-1DBSL Manual page 17

DUAL MEDIUM INTENSITY LED/STROBE
3.5 TRIGGER CIRCUIT
The trigger circuit is supplied by transformer T2 secondary windings. The 250V AC
is converted to DC, which is stored in a storage capacitor much like the action of the
high voltage circuit. The main difference is that the storage capacitor is much
smaller. The trigger circuit receives the pulses generated by the timing circuit. It
releases its stored energy with each pulse and delivers it to the flashtube's trigger
element to initiate each flash.
3.6 ALARM CIRCUITS
3.6.1
3.6.2
3.6.3
3.6.4
M.2006 MANUALS.E-1DBSL
REV. 08/10/04, 12/09/05, 2/08/06, 04/11/06 (load resistor)
REV. 06/21/06 (part numbers), 7/13/06 (Appendix & 6.0 Major Comp. List)
REV 10/20/06 (Appendix & parts lists)
REV. 04/10/07 (text)
MODEL E-1DBSL
White Strobe Failure (SF)
White Strobe Failure alarm circuit monitors each flash of the daymode
flashtube within the beacon. If the flashtube fails to flash (for any reason),
the alarm circuit operates relay K11, (on PCB #3) which the customer can
connect to their alarm transmitting devices. The alarm point can be accessed
on P12 of PCB #3.
LED Red Beacon Burnout (BB)
When LED Red Beacon burns out, or fails to flash, a signal from Module M2
will energize the K8 relay on PCB #3, then K8 will energize K10, for LED
Red Beacon Alarm. Alarm point can be accessed on P12, PCB #3.
Power Failure (PF)
The power failure alarm relay is energized during normal operation. If the
power is removed for any reason, then relay K6 will drop, creating an alarm
for the customer's alarm-transmitting device.
Sidelight Failure (SL)
Module M3 monitors the current flowing to the sidelights. This module can
monitor from 1-4 lamps. Factory setting is generally for three (3) lamps.
When the current falls below two (2) lamps (one [1] lamp less than the
factory setting), then the onboard relay will engage, creating an alarm which
is then sent to P12.
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