Thread: Inductive Limit Switch problem
Threaded View
-
29-03-2020 #1
I've just upgraded from using microswitches as limit/homing switches to LJ12A3-4-Z/BX type inductive proximity sensors. I'm getting some spurious trips from the Z-axis sensor due to interference from the spindle, a Huan Yang 2.2kW water cooled unit fed from a VFD. The spindle and sensor wiring go through the same drag chain for part of the run and I'd like to avoid having to separate them if possible.
One of the symptoms is that the red LEDs on the relevant sensors glow visibly, but very dimly, when the spindle is running. A ferrite ring on the sensor cable makes no difference, neither does a 1uF capacitor between ground and either the +V supply or sensor output.
Has anyone else seen this faint glow before and, if so, how did you fix it?
All help gratefully received.
KitAn optimist says the glass is half full, a pessimist says the glass is half empty, an engineer says you're using the wrong sized glass.
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Similar Threads
-
Limit switch problem
By ECCO in forum General ElectronicsReplies: 7Last Post: 25-12-2015, 11:28 AM -
Which Type of Limit Switch
By manofgresley in forum General ElectronicsReplies: 52Last Post: 29-07-2014, 03:43 PM -
Limit switch issues?!?
By jonbabbz in forum General ElectronicsReplies: 10Last Post: 06-02-2014, 07:37 PM -
One limit switch per axis
By EddyCurrent in forum General ElectronicsReplies: 17Last Post: 30-09-2013, 11:38 AM -
Limit switch Cable ...
By Wobblybootie in forum General ElectronicsReplies: 3Last Post: 17-01-2011, 04:37 PM
Bookmarks