[DG] [DG] Buzzing Noise Smartpilot S1 - Printable Version +- Raymarine forum (http://forum.raymarine.com) +-- Forum: Raymarine Forums (/forumdisplay.php?fid=1) +--- Forum: Autopilots (/forumdisplay.php?fid=23) +--- Thread: [DG] [DG] Buzzing Noise Smartpilot S1 (/showthread.php?tid=6446) |
[DG] Buzzing Noise Smartpilot S1 - cbarrer6 - 08-21-18 08:49 AM Hi, I have replaced my Raytheon type 100 course computer with a Smartpilot S1. The old course computer broke down for second time, same transistor (IRFZ44N) failure. I prevents the clutch from engaging/disengaging. My system is 12V and has a ST6002 control unit and a Lewmar DU130 Direct Drive connected via a linkage to the rudder axle. I have to interchange the output cables to the drive (A&B) to make work. The boat is a light displacement fin keel cruiser-racer (39ft, ca 8tons). It works in normal conditions, but not on moderate swell or high wind. But the thing that worries me is that as soon as I press Auto on the control unit starts a electrical buzz on the drive unit. Or so it seems, difficult to locate the exact point in the lazarette. I never have this buzz with the type 100 course computer. So I wonder what could it be. Thanks in advance for any help, Carlos RE: [DG] Buzzing Noise Smartpilot S1 - Derek - Raymarine - Moderator - 09-03-18 11:51 AM Hi cbarrer6 Thankyou for your enquiry The buzzing - if it is coming from the drive could either be mechanical, maybe the drive belt slipping possibly, or the clutch coil buzzing? The S1 computer is a small unit to be driving the Lewmar drive and I would have suggested an S2 as a more suitable course computer. The S1 is going to struggle to provide enough power to the drive. Regards Derek |