Syncro-Lab Motor Convert From 220V To 110V

[bueschersaxo]

Hi all, I've got 3 turntables with Syncro-Lab motors that I'd like to convert from 220v to 110v. I've already figured out how to turn down the spindles on my lathe to get them to work at the correct speed at 60 Hz. They each have a 220v mains connection block that does not have the linkages that you would change in order to switch the voltages; just blank holes where these would have been. Does anyone know what these linkages connected to that I might add to them to get these to work here in the US?

Thanks!
David

[LPfan]

Take out the mains connection block and check how the motor coils are connected. If they are in series then you can change that to parallel connection and the motor is ready for 110 volts operation. But I suspect that you have dedicated 220/240 volts motor with the coils wired in parallel. If that is the case, you shall have to use a step up transformer or rewind the coils.

Regards,

LPfan

[bueschersaxo]

Take out the mains connection block and check how the motor coils are connected. If they are in series then you can change that to parallel connection and the motor is ready for 110 volts operation. But I suspect that you have dedicated 220/240 volts motor with the coils wired in parallel. If that is the case, you shall have to use a step up transformer or rewind the coils.

Regards,

LPfan

Thanks! The motors are all marked Garrard Series II Synchro-Lab and:
220 240 / 110 120 50/60 Hz
So, now I'll have to figure out how to connect them in parallel. Time to read up on basic electrical theory.

Cheers,
David

[LPfan]

Thanks! The motors are all marked Garrard Series II Synchro-Lab and:
220 240 / 110 120 50/60 begin_of_the_skype_highlighting              110 120 50/60      end_of_the_skype_highlighting Hz
So, now I'll have to figure out how to connect them in parallel. Time to read up on basic electrical theory.

Cheers,
David

Could you post photos of the connector block and the markings on the motor? If it is a dual voltage motor that makes it very easy to change over. I am puzzled as you have said in the first post that the linkages are missing and blanck holes instead of pins?

A dual voltage motor should have 4 pins (excluding the 2 used to connect the mains lead) and 2 linkages in the connector block. The instructions about how to connect the inkages are on the block cover. For 110/120 volts operation, pin 1 and 2 are connected to each other with one linkage while the other is used to connect pin 3 to 4. For 220/240 volts both linkages are used to connect pin 2 to 3.

Hope this helps,

Regards,

LPfan

[bueschersaxo]

Could you post photos of the connector block and the markings on the motor? If it is a dual voltage motor that makes it very easy to change over. I am puzzled as you have said in the first post that the linkages are missing and blanck holes instead of pins?

A dual voltage motor should have 4 pins (excluding the 2 used to connect the mains lead) and 2 linkages in the connector block. The instructions about how to connect the inkages are on the block cover. For 110/120 volts operation, pin 1 and 2 are connected to each other with one linkage while the other is used to connect pin 3 to 4. For 220/240 volts both linkages are used to connect pin 2 to 3.

Hope this helps,

Regards,

LPfan[/quote]

No photos at the moment. The motors do have 4 pins: 2 on one side of the motor and 2 on the other. The connector blocks don't have the linkages, only the mains connections. I have a Garrard 401 that I was able to switch voltages in under 10 seconds with the linkages, so I know exactly what you are describing in the block. It should be simple for the electrically adept person to duplicate what the linkages do, but I'm not that person at the moment. I might be able to look at a Synchro-Lab 95 that is operating at 110v and compare the wiring.

Thanks,
David

[bueschersaxo]

Success! After comparing the wiring connections of my SL-95 which is set-up for North America and the wiring directly at the motors of the ones I want to convert, I was able to cut and splice to change from series to parallel. They work great! It would have been easier if Garrard had included the universal mains connection block, but hey they may have saved a penny, and I got a chance to learn something.

Thanks LPfan! Vinylengine rocks!

David

[LPfan]

Congratulations!

Best Regards,

LPfan

[magman888]

I am considering buying a used 220v Syncro for use here in Canada -
Can you give further details/diagram or pictures of the procedure you carried out to the 4 pin board to convert to 110v
Thanks in advance
Mark

[Chambi95]

Explainations are here in the "library" chapter.
Try user manual for Garrard SL65B or AP76 for instance