Section 3: POWER FAILURES, ALARMS, AND TROUBLESHOOTING
3.0 Power Failures
There are two sources of power to the Seakeeper 9:
24 Volts DC powers the Seakeeper for all the control electronics.
208 - 230 Volts AC powers the Motor Drive Box to drive the motor inside the Seakeeper.
These are supplied on Cables 1 and 2 which are shown on Seakeeper drawing 90257, Cable
Block Diagram.
The Motor Drive Box contains hazardous voltage and the
cover should not be removed while the flywheel is spinning
and the AC input voltage is present. This high voltage exists
even if the flywheel is coasting down and the supply voltage
has been shut off. The flywheel must be at Zero (0000) RPM
and AC input power disconnected for at least 10 minutes
prior to any service work on the motor drive box.
3.1 24 VDC Failure
The display will be blank. Flywheel speed will decrease. The brake is locked (no precession).
Verify the boat’s circuit breaker supplying +24 VDC has not tripped and the AC breaker
is On.
When +24 VDC is restored, the display will be powered up, Splash Screen will appear,
and then Home Screen will appear.
Press POWER ON/OFF
The progress bar will appear and indicate flywheel speed. When the flywheel is at
minimum operating speed the progress bar will turn green and brake system may be
unlocked. This may take up to 15 minutes, depending on the speed of the flywheel when
+24 VDC is turned back on.
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