Toolboard Power Input Current Limit
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Hi,
im planning a printer build using the Toolboard 1LC.
I will be using a high power hotend heater that could draw around 4.5A. The documentation page states that the heater output can handle 5A, but under "description of connections" it also states the board's input is fused at 5A. Since i'll also run the extruder motor as well as fans from the board, i'm expecting the total power draw might exceed 5A and blow the fuse.
However, the documentations also goes into detail about wiring in an external fuse for the board, so now i'm not so sure...
Is there a power input fuse directly on the toolboard, and if not, would it be safe to use a 7.5A external fuse?
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undefined Phaedrux marked this topic as a question
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@WarriorMe I run a rapidly, which is 115w, with a toolboard, along with an extruder and everything else without issue. The hotend won't be at 100% at the same time everything else is going so you'll be fine
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@WarriorMe there is no fuse on the Tool Board. The Tool Distribution Board has a 5A fuse for each power output. If you are not using a Tool Distribution Board then we recommend using a 5A inline fuse in the power cable. You could substitute a 7.5A fuse at your own risk.
The JST-VH compatible connectors we use are rated 5A but the original JST-VH connectors have a higher rating, I think it may be 8A. So you may want to use a genuine JST-VH shell and crimp pins when connecting to the tool board.
However, I think it's unlikely that you would run the heater at full power and the motor at the same time, so unless you are using high current fans then a 5A fuse should suffice.
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undefined dc42 has marked this topic as unsolved
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