customer support department
frequently asked questions
B&G Customer Support
Premier Way
Abbey Park
ROMSEY
SO51 9DH
UK
James Duynisveld
Page 3
FAQ - Hydra Pilot Fault Codes
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Fault 102 - Rudder Reference
Fault Description
The signal from the rudder reference unit is outside the limits set during commissioning.
Remedy
(1)
Check installation of rudder reference unit for slack or loose fittings.
(2)
Check the signal from the rudder reference with a voltmeter at the Pilot computer. The voltage
supply to the rudder reference should be 4.5 to 5.0 volts. With someone moving the helm, the signal should
change smoothly. If the signal is incorrect, suspect a faulty rudder reference unit. Note the difference
between the signal voltages measured at the two end stops must be at least 1.0 volt.
(3)
Set display (Hydra or Hercules) to show digital rudder angle in degrees. Move helm to Port and
Starboard end stops; check that the indicated rudder angle is 40 degrees (+/-2). If not, check the rudder
reference installation to determine and rectify the reason for the end stop position changing and then re-
enter the set end stop commissioning values.
(4)
Move helm slowly from end stop to end stop. Check that indicated rudder angle counts from 40 deg.
one side to 40 deg. the other side without "missing" a count.
(5)
If the fault is always at the same rudder angle, suspect a faulty rudder reference unit.
(6)
If the fault is at different rudder angles suspect a fault in the wiring, the connections to the Pilot
computer, or the Pilot computer electronics.
Fault 103 - Rudder Drive
Fault Description
The Pilot attempted to move the rudder, but did not sense any change in rudder position
or
When the Pilot attempted to move the rudder, it moved in the wrong direction.
Remedy
(1)
Is the heavy-duty power supply circuit breaker for the autopilot drive switched on?
(2)
Check installation, look for any slack or loose fixings in the drive system or the rudder reference as
the helm is moved.
(3)
Move the helm. Does the rudder indicator work, if not, check installation of rudder reference unit as
detailed above.
(4)
Select "Power Steer" mode. If drive system includes a clutch or solenoid valve, engage the pilot and
check the operation of the clutch or solenoid valve. It should not be possible to move the helm with the
Pilot engaged. If clutch fails to operate:
