First tuning bed heater, printer just shut off
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I wired up my Keenovo exactly like in the diagrams, double-checked everything. I tried to do PID tuning for the first time and my printer's lights all went out. Not even the switch will light up.
I'm guessing my fuse is blown on the switch, But I am using the one recommended by the manufacturer: https://www.amazon.com/gp/product/B00ME5YAPK/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Why did this happen? What can I do to fix it?
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@tylersuard Can you send a link to the way you wired everything up as well as a photo of your board clearly showing the wiring?
Also, post your config.g
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@tylersuard said in First tuning bed heater, printer just shut off:
I'm guessing my fuse is blown on the switch
Have you checked with a multimeter?
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@Phaedrux @alankilian thank you for your help. I realized that the fuse was rated for 5 amps and the keenovo draws 7+ amps. I switched up to a 10 amp fuse and lowered the PWM for the heater to .5 .
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@tylersuard The fuse works on the peak current, not the average. It doesn't matter if you set the PWM to 50%, the peak current drawn by the heater remains at over 7A. Fuses are safety devices. The 5A fuse is intended to protect both the switch/socket and the connected circuit. It's not a good idea to simply replace the fuse with one rated for higher current. If you want to maintain the safety of the whole circuit, you should replace the power switch/connector/fuse device with one rated well above the current that your device is actually going to use.
