Troubleshooting
ORCA Sonar System
34
The ORCA Sonar system is often used with an
electric actuator, powered and controlled by internal
electronics in the ORCA Transmitter. This section
describes several tests which can be made on the
complete system, and on the individual parts, to try to
identify the cause of a problem where a unit seems
not to be operating correctly.
If the Cleaner LED is illuminated with no Actuator
movement the ORCA Transmitter has attempted to
drive the Actuator but the action failed.
Wiring Checks: Confirm there are no loose or
misplaced wires.
Power Supply: Ensure that power supplied to the
instrument is within the specifications given (see unit
specs & helth checks). If DC power is used, then
the current capacity of the DC supply wiring is
critical.
Mechanical Checks:
Ensure that the actuator, bracket, transducer
mounting pipe and hinged clamps are assembled
correctly and that the pinch bolts which secure the
hinged clamps to the transducer mounting pipe are
firmly tightened. Correctly assembled hinges should
move very freely before the transducer mounting pipe
is inserted.
Software Settings:
To check for correct operation of the actuator go to
the ‘Cleaning’ parameter under ‘OutputAd’ and select
‘Actua Out’, then press CAL. The actuator should
move the transducer out to its end stop setting.
Return to the ‘Cleaning’ parameter and select ‘Actua
In’. The actuator should move the transducer back
ORCA Electric Actuator Troubleshooting
in to its home position. Return to the 'Cleaning'
parameter and finally select ‘Actuator’ for the
standard automatic operation mode.
If the actuator does not move correctly or jitters:
If the actuator still does not operate when
commanded manually first attempt to reset the
international potentiometer.
This is done by applying voltage directly to the
Actuator wires: Disconnect the Green and Yellow
wires from the transmitter. Apply 24VDC directly to
these wires (Yellow positive, Green negative). This
will drive the actuator. After the extension stops,
remove the direct 24VDC. Re-connect the green and
yellow wires to the transmitter. After the unit attempts
a second cycle it will have detected the Actuator
at full extension and then attempt to retract it to the
default Start position.
If the Actuator still does not retract to the correct
home position connect a different power source to
the ORCA transmitter. Re-confirm the resistance and
voltage specifications are measured as per listed in
the 'Unit Specs and Health Checks' section.
If the Actuator still does not function correctly you
may need to replace the Actuator.
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