Honeywell BENDIX/KING KAP 140 Maintenance Manual page 55

ITEM
Roll Clutch Engaged
AP Disconnect
Trim Arm
Trim Down
Trim Down
Stall Warning
Revision 2, Dec/2002
CS:15574F02
BENDIX/KING
KAP 140
DESCRIPTION
Indicates engagement status of roll clutch solenoid
based on sensing current flow through the low side
solenoid driver in the FCC. The detection threshold
is set at 120mA with a hysteresis of 30mA. A 'YES'
implies solenoid current is greater than the detection
threshold and therefore the roll clutched is engaged.
A 'NO' implies solenoid current is less than the
detection threshold and therefore the roll clutch is not
engaged.
Momentary pushbutton on the control wheel which
disengages the autopilot and interrupts power to the
trim servos when pressed. The switch interfaces to
a 28V/Open discrete input on the FCC. A 'YES'
implies the input is open and therefore the switch is
pressed. A 'NO' implies the input is at 28V and the
switch is not pressed.
Momentary pushbutton on the control wheel used in
conjunction with the manual trim up and down
switches to issue a trim command to the autopilot.
Interfaces to a Open/Ground discrete input on the
FCC. A 'YES' implies the input is grounded and
therefore the switch is pressed. A 'NO' implies the
input is open and the switch is not pressed.
Momentary pushbutton on the control wheel used to
issue a trim up command to the autopilot. Interfaces
to a Open/Ground discrete input on the FCC. A 'YES'
implies the input is grounded and therefore the
switch is pressed. A 'NO' implies the input is open
and the switch is not pressed.
Momentary pushbutton on the control wheel used to
issue a trim down command to the autopilot.
Interfaces to a Open/Ground discrete input on the
FCC. A 'YES' implies the input is grounded and
therefore the switch is pressed. A 'NO' implies the
input is open and the switch is not pressed.
Reserved for future use.
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