8
Stabilizer Operation and User guide
version 2950-4 - 2018
Alarms and System monitoring
ALARM
ALARM
Reason
Check/Action
Boat handling
see details below
Fin centring error
The system is unable to
center one or both fins.
Make sure you have hydraulic pressure. Go to the system status
menu and check pressure, or read the pressure from the pressure
gauge located on the accumulator valve unit. Depending on system
specifications, pressure shall be between 70 and 100 bar. Pressure
from 25-40 bar indicates that the electrical or manual accumulator
dump valve is open.
Pressure below 25 bar indicates a hydraulic system failure, LS signal
failure or AC pump failure.
All pressure readings to be done with stabilizers “ON”
Pressure readings should be carried out first with main engines
running, then with AC pump running (at anchor mode)
If pressure is ok:
Check cables and their connections between ECU and fin position
sensor.
L2
Fin x motion
The system is unable
to put the fin in the
desired position, or
there is a problem with
the sensor.
Make sure you have hydraulic pressure. Go to the system status
menu and check pressure, or read the pressure from the pressure
gauge located on the accumulator valve unit. Depending on system
specifications, pressure shall be between 70 and 100 bar. Pressure
from 25-40 bar indicates that the electrical or manual accumulator
dump valve is open.
Pressure below 25 bar indicates a hydraulic system failure, LS signal
failure or AC pump failure.
All pressure readings to be done with stabilizers “ON”
Pressure readings should be carried out first with main engines
running, then with AC pump running (at anchor mode)
L2
Fin x position
Encoder is reading
invalid angle
Check cables and their connections between ECU and fin position
sensor. Check encoder belt and pulleys.
L2
Hydraulic Oil level low
The oil level in the
hydraulic tank is below
the accepted minimum
level
Check Oil level on visible gauge on the tank to see if it is a real low
level alarm, or if it is a sensor fault. Oil level to be at the upper half
of the level indicator upper window (with the stabilizers active).
Refill if necessary with mineral based hydraulic oil ISO VG 46.
Check for leaks.
A signal failure (broken signal cable) will cause low level alarm.
L4
Hydraulic Oil temp high
The oil temperature is
too high
Check oil temperature from the system status menu. Alarm
point=75˚C.
Check that the cooling pump is running and water is flowing.
Check seawater inlet strainer for contamination.
Do not run the system except in case of emergency if oil temp. rise
above 75˚C!
L3
VFD Not Ready
VFD Not Ready
Verify that VFD is in REMOTE mode. Check wiring.
L2
VFD Fault
VFD Fault
Check fault description on VFD.
L2
Pressure Sensor Wire
Break
Pressure Sensor Wire
Break
There is a break in the 4-20mA sensor loop. Inspect wiring.
L2
Servo Valve current out
of limits
Servo Valve current out
of limits
Contact Side-Power for assistance
L2
