Chapter 1: Procedures 5
Step 3 - Checking rudder bar and steering operating sense
Carry out the procedures appropriate to the system you are commissioning, i.e for
either:
• SPX-10, SPX-30 or SPX-SOL system
or
• SPX-CAN system connected to a Volvo IPS system.
SPX-10, SPX-30 & SPX-SOL systems
If a rudder reference transducer is fitted, check the rudder bar operating sense as
follows:
1. Turn the wheel manually to starboard.
2. Check that the rudder bar on the controller display moves to starboard.
If the rudder bar moves the wrong way:
i. Turn off the power.
ii. Reverse the red and green wires connected to the
RUDDER
inputs on the
SPX Course Computer.
iii. Switch on the power and re-check.
Check the steering operating sense as follows:
1. Manually center the wheel, then press
auto
so the SPX system is in Auto mode.
2. Check that the display shows
AUTO
.
Be ready to press standby if the rudder moves hardover.
3. Press the +10 key once or turn the rotary control ½ turn clockwise.
4. Check that the rudder moves to starboard a few degrees, then stops. If the rudder
drives hard over, immediately press
standby
to prevent further rudder
movement.
5. If the rudder moves to port or the rudder drives hard over:
i. Press
standby.
ii. Turn off the power.
iii. Reverse the motor wires (on SPX-10 & SPX-30) or solenoid wires (on
SPX-SOL), connected to terminals A and B on the SPX Course Computer.
iv. Switch on the power and re-check.
Note:
If the rudder overshoots and has to drive back or starts to hunt back and forth, you will
need to increase the rudder damping level manually (See
page 30
).
D10745-1
ST6002
ST7002
ST8002
½ turn
81307_1.book Page 5 Wednesday, December 19, 2007 11:17 AM
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