OPERATION
MANUAL
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Section 3: POWER FAILURES, ALARMS, AND TROUBLESHOOTING
3.0 POWER FAILURES, ALARMS, AND TOURBLESHOOTING
The Seakeeper 1 has safety features, such as alarms and warnings, that pop-up on the Seakeeper
Application and are signaled on the ConnectBox to protect the Seakeeper as well as the vessel. The
brake can be locked from the Application, ConnectBox or by shutting off DC power at the supply
breakers, preventing the Seakeeper from precessing.
3.1 POWER FAILURES
In the event of a power failure, the brake automatically locks the Seakeeper so it cannot generate anti-
rolling torque loads.
When a power failure occurs, it is important to identify the two sources of power to the Seakeeper 1:
• High current 12 VDC in powers the control electronics and motor drive.
• SW Pump 12 VDC in powers the seawater cooling pump.
These are supplied on Conductors 1 and 2 and Cable 7 which are shown on Seakeeper drawing 90511,
Seakeeper 1 Cable Block Diagram.
The Motor Connections should not be touched when the Seakeeper is
Powered on or the motor is running. This voltage hazard exists even if
the flywheel is coasting down and the supply voltage has been shut
off. The flywheel must be at Zero (0) RPM and DC input power
disconnected for at least 10 minutes prior to any service work on the
Seakeeper.
3.2 12 VDC HIGH CURRENT FAILURE
If the 12 VDC high current is disconnected during operation, the Seakeeper Application will go blank,
ConnectBox lights will power down, flywheel speed will decrease, and the Seakeeper 1 will lock to
prevent precession (no stabilization).
• Verify the boat’s ov
ercurrent protection supplying +12 VDC high current has not tripped nor
blown.
• When +12 VDC high current is restored, the Seakeeper App will power up on the display (MFD
or 5” Touch Display), the start-up screen will appear, and then the Home Screen will appear.
The ConnectBox will illuminate.
• Press POWER button . The progress bar will appear and indicate flywheel speed.
When the flywheel is at minimum operating speed, the STABILIZE button will appear so
stabilization can be turned on. This may take up to 15 minutes, depending on the speed of the
flywheel when the +12 VDC high current is turned back on.
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