TM 55-1520-240-T
15-6 ELECTRONIC SEQUENCE UNIT (ESU)
15-6
15-6.1
15-6.1
ESU COMPONENTS
BITE
1
2
3
4
DECODED BITE INFORMATION
M A I N F U E L V A L V E S I G N A L O U T ( 1 4 % )
RESET
START FUEL VALVE & EXCITER SIGNAL OUT (5%)
START FUEL VALVE & EXCITER SIGNAL OFF (70%)
90% RPM SWITCH ON
READY FOR SERVICE (90% + 1.5 SEC.)
PROCESSOR BOARD FAILURE
SENSOR /DATA BOARD FAILURE
OVERTEMPERATURE
OVERSPEED
UNDERSPEED
FAILURE TO START
SHORTED THERMOCOUPLE PROBE (WARNING)
OPEN THERMOCOUPLE
PROCESSOR SEQUENCE FAIL
NO TEMP DATA
NO SPEED DATA
C h a n g e 8
15-105
