JuiceBox Classic (PCB V8.12 and 8.14) Current Limit Setting

Kris -

Please ensure your JuiceBox unit is completely powered off prior to adjusting your current limit setting via hardware trim-pots.

8.12 

Trim-pot R20 adjusts current draw limitation for 240V operation. The far right setting is 40A (as pictured, default if 40A product ordered), the far left is 0A. Current draw limit setting is equally spaced from 0 to 40. So, 30A is ¾ of the way to the far right, etc.

 

On older versions prior to August of 2015, Trim-pot R25 adjusts current draw limitation for 120V operation. By default, it is set at 15A, which is 2 o’clock relative to the bottom of the board.

On the newer board versions, there is no adjustment to the 120V operation, and by default is set to 12A.

See below for an image of the trimpots in default positioning for 40A product:

Please do not adjust trim-pot R74.

 

If you would like a precise current limit setting (within 1 A), you will need an FTDI programming cable - you will be opening a serial port and viewing run data.

However, please remember that the worst that can happen in instances of excessive current draw is your breaker tripping.

 

8.14 or 8.16

Trim-pot R20 adjusts current draw limitation for 240V operation. The far right setting is 40A (as pictured, default if 40A product ordered), the far left is 6A. Current draw limit setting is equally spaced from 6 to 40 in 5 amp increments. So, 20A is ½ way for example.



See below for an image of the trimpots in default positioning for 40A product:




8.14_trimpot.PNG



 

Thank you!



 

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