5V for MPG pendant

Machines (Elite Series)
1

I have got an MPG pendant from Amazon for my Elite machine. The pendant works on 5V. Masso seems to provide 24V as the power for pendants. Everything else seems to be compatible with Masso.

I wonder, I will have to solder the pendant to a D15 connector. Do you think, that if I add a USB connector, I can wire it to one of the available USB ports on the Masso, to provide 5V power to the pendant? That is, I am thinking to have 2 connectors on the pendant’s wire, one main D15 and a USB in addition to provide power.

What do you think?

2

did you get any info from anyone. I have the same MPG pendent. and was wondering the same thing,

3

Hi Marcel,

No, I have not got any responses. I have this thing on the back burner so far.

I am planning to check the voltages between the USB ports and the D15 pendant interface. If the
voltage of USB power is +5 relative to the D15 ground, I think it should work.

4

Personally, i wouldnt use the USB for power. It will probably work but why take the chance of blowing out your USB controller.

You can take a cheap 5v phone power supply and cutthe usb cord to separate power and data and use that instead. No risk to the USB controller.

There is also always the option of putting a buck converter in line to step down from 36v to 5v

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5

Thank you Scott for you comment. However, is it not this true for any custom connection you make? Connecting a pendant can also blow out the pendant port, if done incorrectly.

Regarding the USB, it is supposed to provide 1A of +5V power, which should be plenty for a pendant. If the voltages are correct, I do not see how this may be a problem.

6

I am fairly new to the CNC game but I have already seen problems twice with my USB port on Masso controller. Occasionally the controller loses the USB drive. The only way to get it back is to reboot the controller. This is the main reason I would not use the on-board USB port to provide power for anything. Just my opinion.

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7

If you have 24v you can get cheap step down converter to get 5v. USBs have a limited amount of power. Depending on what’s already being driven by USB ports you could draw too much power.

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8

The pendant I got needs 80mA of +5V current to work.

The USB 2.0 specifications allows up to 500 mA of current from a single USB port.

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9

I believe if you ask this on the Masso forum they will advise against using the controller USBs as power sources.

10

Interesting. I probably should ask there, true. Thank you for the hint.

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11

It’s just my habit to go there for any definitive answers related to Masso. They have always helped me either gain knowledge or troubleshoot over the last few years since owning their controller and my original Onefinity Woodworker.

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12

Yes, always best to ask MASSO specific question on the MASSO forum!

13

Hey Calgary,

yes, but a USB port is configured by the driver and supplies various currents only after request. You can’t simply get 500 mA out of it without the handshaking. Except if it’s not a USB port but a power supply.

A step-down converter is the correct way to get 5 V out of 12 V. They are avalaible as modules everywhere.

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