Thread: Control box rebuild
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19-05-2018 #11
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19-05-2018 #12
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19-05-2018 #13
looking at your photo of the terminals
this is how I would connect to the VFD
with the forward on/off control being BOB's the relay controlled by pin 17
yes
the relay switches the VFD on in the forward direction
and is the simplest control with one switch
depending on the parameters set for input X1
you could have 3 switches
one for on / off
a second for forward that works in conjunction with the on /off switch
the 3rd being reverse that works in conjunction with the on /off switch
JohnLast edited by john swift; 19-05-2018 at 08:14 PM.
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21-05-2018 #14
Hmmm whilst attempting to set up the VFD I have hit another snag and I am guessing its noise interference or which ever its called with the data cables. I am getting intermittent stalling on the motors and in one case when moving one axis another was twitching (all when manually jogging)
#BIGsigh
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21-05-2018 #15
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21-05-2018 #16
yeah as its all in a wooden box the wires from the drivers to the motors are the only things earthed for the shielding.
If I ground everything would that help with the interference?
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21-05-2018 #17
ok had done some reading and going to ground my components tonight and replace some wires with shielded wiring and see if that works as I've just read a few threads in regards to this issue and it all boiled down to shielding and earthing component's.
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21-05-2018 #18
that will explain the problems
I can not see an earth connection to the VFD
John
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21-05-2018 #19
Just a thought, I've got enough shielded cable for replacing the external leads to the motors from the 4 pin plugs via the control box, how do I ground this part of the cable or is it shielded via the internal wires that connect the drivers to the 4 pin plugs as I grounded them? do I attach it to part of the cnc frame?
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The Following User Says Thank You to Palletlad For This Useful Post:
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21-05-2018 #20
with 4 pin connectors you would have to connect the earth / screen to the shell of the 4 pin chassis plug
and then the cable screen to the shell of the 4 way inline socket
John
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