Translation of Chinese power supply label needed

[GeoffS]

A friend has just received a variable power supply for a DC motor engraving spindle.
No documentation and no response from the seller.
As it's 240V, he wants to make sure that he correctly identifies the terminals before connecting anything.
Can any Chinese speakers help with a translation of the attached image?
The 220V terminals seem to be the 2 on the right and the 3 wires to the potentiometer for speed control are on the left (the pot is already attached)
The other 4 terminals are unidentified.

Sorry about the quality of the image.

[Rerouter]

at a guess looking at the other label, the left most 2 von the 6 wide block is the regulated DC output,

[GeoffS]

I'd agree with that. Assuming that the 2 on the right are 220V and two of the remaining 4 are the variable DC out, it's the other two connections that need identifying. Also there doesn't appear to be a dedicated earth terminal.

[Monkeh]

I suspect you'll find two terminals each for positive and negative. Earth will be via the chassis.

Popping the board out and taking a look at the layout will identify them very quickly.

[GeoffS]

I suspect you'll find two terminals each for positive and negative. Earth will be via the chassis.

Popping the board out and taking a look at the layout will identify them very quickly.

On the similar, fixed voltage supplies i have, there is a dedicated earth terminal.
Pulling the boards will be the last resort if no one can help with a translation. It might be worth doing that anyway to check out the erthing.

[Monkeh]

I suspect you'll find two terminals each for positive and negative. Earth will be via the chassis.

Popping the board out and taking a look at the layout will identify them very quickly.

On the similar, fixed voltage supplies i have, there is a dedicated earth terminal.

Indeed, but it doesn't look like there's one here.

Pulling the boards will be the last resort if no one can help with a translation. It might be worth doing that anyway to check out the erthing.

I'd advise doing it anyway with such a cheap supply. Although after doing so, one may be tempted to throw it in the bin and buy something better..

[Rerouter]

I've had a bit more of a crack at it without much success,

the 2 characters above the led is power supply
the bottom 2 are very close to indicator,

the middle 2 on the 6 block terminal are coming close to the translation for some kind of contact

[Monkeh]

Check for continuity between the two unknown pairs. I'll bet you'll find they're commoned.

[GeoffS]

I had a friend's teenage daughter give me a translations (she's a Chines language student) and it came out this:

First the small label (on the cardboard box) 
        Model: wk648
        Enter: AC220V
        Export: 0-48V
        (few characters that possibly mean "name"?): PWM DC Converter Power Supply
   
        Now the longer label, each little square separated by a "-"
     
        Potentiometer - Power Indicator - Export - Excitation - Enter AC220V

Export is output (probably) but Excitation?
       

[Monkeh]

Two terminals V+, two terminals V-. Same basic layout as most of these supplies.

[oPossum]

Export is output (probably) but Excitation?
       

Remote sense?

[BravoV]

Pm iloveelectronics / Frankie ?

[all_repair]

 From the right, 1. incoming 220v, 2. excitation field likely to synchronise another supply, 3. output 4. Power indication, 5. Potentiometer (or some connection for level adjustment)

For 2, it is not "sense", however it is out of my domain knowledge.

[iloveelectronics]

It's also not something I know much about but I believe the middle 2 terminals is for field coil in a motor. http://en.wikipedia.org/wiki/Field_coil

all_repair above has got all the other translations correct.

[G7PSK]

If the layout is the same as the mean-well ones the left most 3 terminals are the remote voltage controls so that the other ones not marked 220 should be the output.

[sleemanj]

Sorry about the quality of the image.

There are sites for doing OCR of chinese characters (which you can then feed to google translate), eg newocr.com, i2ocr.com, upload to google docs will also OCR for you. 

But you'd need a much higher quality image to get a usable result I think.

[GeoffS]

One possible explanation is that 'excitation' refers to a fixed voltage supply to the field coils on a separately excited DC motor?
The armature winding gets the variable voltage for speed control.

If so, it's not applicable on the engraving spindle that came with this supply as it only has 2 wires.
At least that's something that can be tested.

[codeboy2k]

How about take your psu to the local chinatown, buy a wonton soup (it's good !) and ask your server

However, be warned that even a native chinese person, if they are not technical may not know.

I once asked a native Japanese person for help translating a Japanese datasheet, but the person could only explain and understand what 50% of it was.  There were many words he had never seen before.

[iloveelectronics]

I am a native Chinese speaker. "Field coil" is the best I could come up with for the translation of the middle 2 terminals. I have seen similar units from China with terminals labelled "field" in English. Exactly how those terminals are used I have no idea as I'm not familiar with these devices.

[GeoffS]

I am a native Chinese speaker. "Field coil" is the best I could come up with for the translation of the middle 2 terminals. I have seen similar units from China with terminals labelled "field" in English. Exactly how those terminals are used I have no idea as I'm not familiar with these devices.

Thanks Franky,

'Field coil' makes sense if, as per my last post, it's for a motor that has a separate field coil connection (this particular motor doesn't)
Ill get my friend to test out the voltages to confirm this
First pair of terminals in the block of 6 should be the variable output controlled by the potentiometer, the second pair should have a fixed voltage (48V).

Thanks for everyone else's  input here.

EDIT: My friend finally got an answer back from the seller of the power supply.  Not a big improvement