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[DG11] Compatibility with older transucers and displays
08-03-18, 06:36 AM (This post was last modified: 08-13-18 03:47 PM by Chuck - Raymarine - Moderator.)
Post: #1
[DG11] Compatibility with older transucers and displays
Hi,

I have upgraded to a new Evolution autopilot, ACU 200, P70s control head, EV-1, connected to an e7D MFD and older ST290 transducers DPU and displays.

My boat is from 2006, and has been updated to suit the E7D MFD with a ST-STng converter before I have added the evolution autopilot.

I The autopilot functions very well except for the clucht currently remaining engaged even when the autopilot is on standby. I am currently investigating if this.

Additionally since removing the older 6001 autopilot with fluxgate compass, U have lost the possibility to display heading on the ST290 displays.

is there a diagram that coudl show me how the ST290 DPU and transducers need to be connected into the STng bus to ensure that heading data from the EV-1 can still be displayed on the ST290's?

thanks, Russell.
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08-20-18, 05:01 AM
Post: #2
RE: [DG11] Compatibility with older transucers and displays
Hi Russell,

Thank you for your enquiry,

It sounds like you have retained the original drive unit and updated the electronics? If this is correct, then it is possible the clutch is sticking in the drive unit.

Completely disconnect the clutch connection from the ACU200, then energise the clutch by temporarily connecting the two clutch wires from the drive to 12v - the drive always uses a 12v clutch supply, even on 24v boats.

If the clutch remains engaged when the 12v power is removed, then I would suspect a mechanical issue inside the drive unit, either there is some fault in the mechanism which allows the clutch coil to slide to and fro. or more likely there is some foreign substance on the clutch faces, which is literally causing them to stick together.

If the clutch operates fine, then check the ACU 200 is not still outputting 12v on the clutch output - it would be very unlikely for the ACU200 to be faulty in this way, but also worth checking.

The ST290 should be connected to STng by connecting the SeaTalk 1 part of the ST290 to a SeaTalk to STng converter and connecting the STng part of the converter to the STng network that connects the new EV pilot and e7D. The SeaTalk2 part of ST290 is very different to the current STng and so we do not recommend connecting SeaTalk2 from ST290 to STng.

regards

Derek
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