I have some 1-5v NPN NO inductive sensors i have tried hooking up one it seems to be correctly wired the light comes on (on the sensor) when triggered. The problem is it dose not trigger the SLB. I am using the same wiring from the mechanical switch and a separate power lead 5V it is a 3 wire switch. i can hook it back to the mechanical switch and it triggers fine. I am using the new version of GSender if that makes a difference. any ideas on whats wrong?
The SLB should handle NPN NO sensors fine, and by your description it sounds like the sensor is triggering. Have you confirmed you see a signal on the wire out from the sensor with a multimeter?
The specific technical page for sensors on the SLB is here, probably worth a read through: Technical Manual - SuperLongBoard
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i get 1.6v through the sensor when it is triggered
i hooked up a sensor to 24V and it triggered the SLB like it should (thought it may be labeled wrong) Hooked up all the sensors and tried to home as soon as all the sensors were triggered it killed all power on the SLB. Time to go back to switches i guess…….
Hey D68,
I don’t have limit switches, nor do I have an SLB so I might be talking out of my neck. Again. Take whatever macaroni I cook up below with a pich of chilli, a whole lot of cheese and a grain of salt.
I however have purchased me one inductive sensor to play around with. One thing I noticed when looking for the cheapest one -not on a chinese website- that most sensors that work on 24V have a ranged voltage with the lower limit being 6.something Volt. I made sure to get me a unit that has a set voltage of 5V. To test it I hooked it up to 5v output at the controller and the probe input.
To be able to readout the switch, I went to the Calibrate tab at g-sender where a pin table shows what switch is active (or not) at the controllers input.
Please note that I am using gsender 1.2.2. Things might deviate at higher versions, but I’m pretty sure it’s still available.
Since your switch seems to work at 24V, I suspect it be a 6.3 lower limit switch. You might be able to use my test setup to see if it actually switches at 5v input. I do advice against feeding the switch 24v while the board is set to have a 5v vcc.
There is a way to hardwire the vcc of the slb from 5v to 24v. There is a wee section about that inside the slb manual found here:
i have tried switching in gsender didn’t work There is another workaround to get voltage with out modifying the board. I’m starting to think it is the cheep Chinese sensors.