Are needle positioners for brushless servo motor drives all the same

[beefy]

13 hours ago, toxo said:

You don't say if you have a needle positioner installed but re the amount of revolutions, I think this is where my problem lies. The braking system on mine stops immediately I stop sewing. I know the braking system can be adjusted but haven't looked at it yet. Maybe it needs that little bit of freedom to get to the set position. My Chinese seller is asking me for a video so they can see the problem. I should add that my machine came fully built but without the N/P installed.

No I don't have a needle positioner installed. The first thing I was wanting to do was check I can actually access the settings for the needle positioner, hence me starting this thread.

However, yesterday I order a needle positioner because even if my servo supplier cannot give me the instructions I can still design my own interface for needle positioning (using the off-the-shelf needle positioner) and it will have better functionality than what my servo drive has. Example my foot pedal controller does not have any switch for when you press back on the heel of the foot pedal, and I check the wires from the foot pedal controller and there's only 3 which will be +5v, 0v, and the variable signal from a potentiometer. No wire for a signal from a pedal heel switch. So looks like my servo is very basic and doesn't have this functionality built in.

[FDC]

I looked at that connectors on my servo motor and the the connector on a AliExpress NPS and they were compatible so I bought the NPS for about $40 CDN delivered and installed it. Works a treat, just need your servo motor manual to get it sorted and understand how to program it. If I can do it you can too!