[gort]

After chasing my tail several times, only to find out one of my many fuses
had blown, I designed a Clever FUSE MONITOR, I use on each of my 4 axis.
USES ONLY LEDS (and a resistor) and will work at ANY VOLTAGE AC OR DC!
Both FRONT PANEL and remote at the fuse LED indicators. Tell in an instant
if an axis fuse has blown.

-Front panel uses dual color (RED/GREEN) 3 lead LED.
-REMOTE FUSE location uses a simple RED LED.
-Only other component is a resistor.
-Option diode allows use with AC (provides reverse voltage isolation, lacking in LEDs)
-Cable is PWR, GND and 1 wire per axis routed from front panel to fuse/distribution block.
-Value of resistor matches the power supply voltage, I use 1K Ohm for 35VDC.
-GREEN LEDs doubles as power on indicator, or if NO LED is lite, then master fuse blown.
-Can use with ANY circuit, not just CNCs.

See attached Front panel, fuse block, and single and a 4 axis/fuse circuit.
Shown with X axis fuse BLOWN. Note: 1 RED LED and 3 green on front panel
NOTE: LITE RED LED beside X fuse.

GORT

[mike_Kilroy]

Nice panel and nice idea Gort! well done! Thanks for sharing!

PS: you probably can leave off the extra series diode - I have been running 10 cent LEDs on 120 & 240 ac lines with just drop resistor for years.