Lowrance HDS-16 LIVE HDS LIVE Installation Manual - Page 44

Check the Rudder FB potentiometer in Helm-1., Switch the Autopilot to Standby.

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Recommended action: • Disconnect the Helm-1 and verify that the alarm disappears. • Check resistance of the clutch coil equals 16 ohms (pin 1 and 2 in connector). No rudder response (For Helm-1/cable steer only)* Probable cause: No response to rudder commands. Recommended action: • Check the cable connections between NAC-1 and Helm-1. • Check the Rudder FB potentiometer in Helm-1. • Check the Helm-1 drive motor. Rudder drive overload* Probable cause: The drive unit shuts down due to an excessive load or a short circuit. Recommended action: • Check the drive unit and drive unit installation. • Look for mechanical obstructions. • Check the manual steering. High drive temp* Probable cause: The NAC-1 drive output circuit is overheated due to excessive load. Recommended action: • Switch the Autopilot to Standby. • Check the drive unit (see "Rudder drive overload"). Drive inhibit* Probable cause: There is an internal NAC-1 failure causing the drive output circuit to shut down. Recommended action: Contact support. Low CAN bus voltage Probable cause: The CAN bus voltage is less than 9V. Recommended action: • Check cabling. • Check battery condition. • Check charging voltage. 44 Software setup | HDS Live Installation Manual

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Recommended action:
•
Disconnect the Helm-1 and verify that the alarm disappears.
•
Check resistance of the clutch coil equals 16 ohms (pin 1 and 2 in
connector).
No rudder response (For Helm-1/cable steer only)
*
Probable cause: No response to rudder commands.
Recommended action:
•
Check the cable connections between NAC-1 and Helm-1.
•
Check the Rudder FB potentiometer in Helm-1.
•
Check the Helm-1 drive motor.
Rudder drive overload
*
Probable cause: The drive unit shuts down due to an excessive load
or a short circuit.
Recommended action:
•
Check the drive unit and drive unit installation.
•
Look for mechanical obstructions.
•
Check the manual steering.
High drive temp*
Probable cause: The NAC-1 drive output circuit is overheated due to
excessive load.
Recommended action:
•
Switch the Autopilot to Standby.
•
Check the drive unit (see “Rudder drive overload”).
Drive inhibit*
Probable cause: There is an internal NAC-1 failure causing the drive
output circuit to shut down.
Recommended action: Contact support.
Low CAN bus voltage
Probable cause: The CAN bus voltage is less than 9V.
Recommended action:
•
Check cabling.
•
Check battery condition.
•
Check charging voltage.
44
Software setup
| HDS Live Installation Manual