KL-600-48 power supply putting out 58 volts!

[bret4]

I just got a KL-600-48 power supply from keling and it is putting out 58 volts with no load on it. I tried to adjust the pot to lower the voltage to 48 volts for my gecko g540 and the voltage doesn't change. Wonder if there is anything else to adjust or is this power supply no good?

[keebler303]

I would talk to keling. A switching power supply is generally quite accurate and obviously the voltage adjust pot should adjust the voltage. SOunds like it might be a defective unit.

Matt

[bret4]

I just heard from John at Keling and he told me to send it back. He is going to send me a new one.

Got to say he got back to me a lot quicker than I thought he would. Great customer service so far.

[jalessi]

Bret4,

John's service has always been awesome we purchase from him every month.

Keling is only 45 minutes south of our location so saving freight charges is a added bonus.

Have a most awesome afternoon,

Jeff...

[bret4]

I can see that. John all ready printed the shipping label and told me he will ship it tomorrow. That is good service! Only wish I had checked the power supply as soon as I got it. With keling's quick service I bet I'd have a new one already.

Bret

[bret4]

Just a quick update. Got my new power supply form Keling today. It is putting out 48v right on the nose. Perfect! Couldn't be happier with their customer service.

[bret4]

One more thing. The KL-600-48 power supply has a terminal marked FG. I figure this is where you attach the AC ground wire. I know that FG should be frame ground. On the keling site they show not used in their wiring diagram for the FG terminal. I'll have to check and see if the FG terminal is attached to the chassis of the power supply.

If anyone knows if this is right let me know.


edit: I just checked the FG terminal with my meter and it is the Frame Ground. Seems like that would be the place to attach the ground from the third prong of the AC wire. Keling should add that to their wiring schematic instead of "Not used".

[bret4]

Update

Seems like the second power supply is now no good. I'm trying to get keling to send me one of the unregulated power supplies to replace the second bad one.

Here is a link to my trouble shooting on another forum here on cnc zone.

Can a G540 take 105 volts!



Another update,

Talked to Linda at Keling and she is sending me one of the unregulated power supplies. The KL-4813. She was really nice to talk to on the phone and really helpful. Got to say they are trying to help me all the can. Thank you Linda for your help!

Bret

[bret4]

Just an update. Keling took good care of me by sending me a KL-4813 power supply. It works great now.

Thank you to everyone at Keling for taking good care of me.

Bret

[Al_The_Man]

edit: I just checked the FG terminal with my meter and it is the Frame Ground. Seems like that would be the place to attach the ground from the third prong of the AC wire. Keling should add that to their wiring schematic instead of "Not used".

It would seem to me that Kelling are not very safety conscious, They still show the control box on their site which appears to have 3 live 120vac male pin sockets instead of female (subject of a previous thread).
They do put a disclaimer on their site it is not their fault if you get electrocuted.
The frame ground should be always connected to earth ground.
Al.

[bret4]

Now I am using the unregulated power supply so the ground has to go to the frame. Don't see a terminal to attach it to. Being that this is a hobby and not something that most people do every day, it would be nice if keling would give more info on things like this. Lots of people could meet their requirement of no fault of theirs if you get electrocuted when wiring info is not as complete as it could be.

[Al_The_Man]

If it does not have one, you could always drill and tap or put a #10-32 screw and nut on the frame to take the ground wire.
Al.