Fisher & Paykel – Smart Drive 051 not turning well

[Pacif13r]

Hi,

I’ve an old Smart Drive 051 in very good condition that we’ve had for 8 years when it was brought second hand. It’s been running perfectly then all of a sudden yesterday in the middle of a load it started beeping endlessly with 1 light on the top row, I’m guessing that it is a binary byte as there are 8 leds? in any case it looks like so
00010000 (0x10 or 16)

The symptom is that the drum tends to not always move unless you help get it going and even then it rumbles/groans with the effort and gives up after a while, usually with the above error code.

I’ve taken it apart and cleaned everything up, and I’ve even had the rotor off but nothing leaps out as an obvious problem. With the rotor on the main shaft is difficult to turn and feels like there are notches. But I assume that it’s just a very powerful stepper motor and that’s normal? With the rotor off the central shaft turns smoothly albeit with reasonably significant effort (turning with my hand directly on the shaft), but once again with all that thick grease and presumably a few rubber seals pressed tightly upon it I’m not 100{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} convinced that’s unusual?

Any assistance much appreciated. Even if you just happen to have the diagnostic info data which would help me decode that error.

Justin

EDIT: I’ve just found the sticky post advising how to get a fault code.
Results = 10001000 (136)

[Pacif13r]

Re: Fisher & Paykel – Smart Drive 051 not turning well

I’ve come to the conclusion that this motor is not like a stepper motor and that the notch like feeling every few degrees is not right. I was thinking that this could be magnetic resistance caused by feedback into the coils so I’ve unplugged them from the controller and measured the resistance on what I understand to be 3 phases on those 3 plugs. I’ve measure the resistance across the terminals and discovered that there is one phase which is the odd one out.
Red – Yellow = ~13 Ohms
Red – Blue = ~13.6 Ohms
Blue – Yellow = ~0.8 Ohms

Not what I would have expected but I’m no 3phase motor expert and it’s all guesswork without a known working reference. Can someone confirm if this is not normal?

Many Thanks
Justin

[Penguin45]

Re: Fisher & Paykel – Smart Drive 051 not turning well

Three sets of windings in the stator – sounds like you’ve got a short. Check the area around the connectors carefully.

Penguin45.

[Pacif13r]

Re: Fisher & Paykel – Smart Drive 051 not turning well

Penguin45 wrote:Three sets of windings in the stator – sounds like you’ve got a short. Check the area around the connectors carefully.

Penguin45.

Just writing to say I’d found the problem when email notification of your message arrived. That is exactly where I found the problem in the end. Pushed the Yellow connector wire down so it followed the plastic molding and didn’t stretch taut under the other copper and it sorted it nicely.

I found one of your posts on this board for another motor but in it you confirmed that all terminals should be roughly equal in resistance and that had led me to take the plunge of a close up copper hunt.

Thanks =D

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