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THIS IS AN UNCONTROLLED DOCUMENT.
THIS ELECTRONIC DOCUMENT MAY HAVE BEEN SUPERCEDED.
THE MOST CURRENT DOCUMENT INFORMATION IS AVAILABLE
FROM YOUR BELL HELICOPTER TEXTRON REPRESENTATIVE.
PRODUCT DATA
JANUARY 2003
CHIP DETECTOR POWER UNIT (CDPU)
The Chip Detector Power Unit (CDPU) interfaces with 11 chip detectors and provides
individual outputs to the Integrated Instrument Display System (IIDS) for annunciation.
The CDPU continuously monitors each chip detector to ensure detector and wiring integrity.
Any discontinuity will be annunciated by activating the related detector output and the
single failure signal. Upon a chip signal, the CDPU will activate the related detector
signal output and the single chip signal. Both the failure and chip signal will be active
for 2 seconds only in order to be properly recorded by the IIDS. This will allow proper
recognition of individual chip or failure signals by IIDS. The CDPU will sequentially
send a failure signal or a chip signal to allow the IIDS to properly recognize a failure
condition for the individual chip detector(s). The CDPU will keep the individual detector
annunciation output active until the chip is cleared or the failure condition has disappeared.
If an individual chip input changes state from a failure signal or chip signal, the CDPU
will interrupt the individual signal and resend it with the proper recognition of the occurrence
for the IIDS. The CDPU will either accept a ground input for system self test or be able
to self test upon power-up. The test sequence will last about 6 seconds and trigger one
chip signal for each engine and one for the transmission. The CDPU will accept a signal
input from the IIDS to initiate chip burn off of the related chip detector. Upon CDPU
failure, the chip detectors will be automatically transferred to the IIDS inputs for
annunciation of chip signals. The CDPU will then output a continuous failure signal.
ELECTRICAL SYSTEM
DUAL GENERATORS & BATTERY
The Bell 430 is equipped with a 28 volt DC single conductor electrical system, using
the helicopter structure as a negative ground. Electric power is supplied by two 30
volt, 200 ampere starter generators [derated to 180 amperes for continuous operation
up to 5000 feet (1524 meters) pressure altitude; with a further reduction of 2 amperes
per 1000 feet [305 meters] increase in pressure altitude up to 20,000 feet (6096 meters)],
one mounted on each engine, and one 24 volt, 28 ampere-hour nickel-cadmium battery
located in the aft electrical compartment, just aft of the baggage compartment door
on the right side of the aircraft.
AMPLE SPACE FOR OPTIONAL
AVIONICS EXISTS IN THE
NOSE COMPARTMENT
[SHOWN WITH OPTIONAL
WEATHER RADAR]
Summary of Contents for BELL 430
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