[TG] SPX30 hard over on auto activation

[Tom - Raymarine - Moderator]

Hello Pcbeachbroker,

This is a very common question/problem. Either your rudder reference or your linear drive are mounted on the boat in the opposite orientation to way they're electrically connected. Either the rudder reference or linear drive can be mounted either on the port side of the boat or starboard, whichever is easiest, but the pilot needs to know which way round they are so that they can read/drive the right way. If either rudder data or drive output is the wrong way round (not that there is a 'wrong' way), the pilot thinks the steering is moving the wrong way and keeps on trying to apply helm to correct until it ends up hard over.

With the pilot in Standby, move the helm slowly port and starboard and make sure that the rudder bar moves the right way. If it doesn't, swap the red and green wires of the rudder reference connection on the SPX. This might mean that you have the green wire in the red terminal and vice versa but that's ok.
Once this is complete (make sure you do the rudder reference check first), centre the helm, press Auto and +10 and make sure that the helm doesn't go hard over or to port. If it does do either of these, swap the drive wires over at the SPX (the motor terminals are only labelled A and B, not Plus/Minus, it's ok to have them either way round to match the way your drive is installed.)

I am confident this will fix the issue.

Tom