Thread: motor and spindle cable size?
I am trying now to sort out the electrical part... and cannot find information on the current ratings of cable sizes.
I will buy drag chains and flexible screened cables from Igus and don't know what size to chose for the cables. I know that thicker is safer but thick cables need bigger bending radius and I don't have to much space. I want to go with EasyChain series E14 with 38 or 48 mm bending radius.
My stepper motors are rated at 4A/phase. Will I be safe with 0.75mm˛ wires? Or should I go with 1mm˛? Or even 1.5mm˛? The longest cable will have 4.5m.
The spindle will be a 2.2KW chinese. Is 1.5mm˛ fine or should go 2.5mm˛? Will be 5.5m long.
The Following User Says Thank You to Clive S For This Useful Post:
Also if you put one pipe between the stepper cables and the spindle cable, then one pipe between the spindle cable and the switches/limits cables, this will help with reducing electrical interference.
Thanks for the replies.
B15 or 10 (non-opening) are way better than the E14. Allows three times more fill weights and unsupported length and is only 10% more expensive.
Regarding the cables, as I need to keep the bending radius low (48mm) I found only one cable (CF10) with the minimum bending radius at 5 x dia and also for maximum duty loads but is double the price of the cheapest shielded.
I made a nice filling and partitioning drawing..
Why would I be needing an opening drag chain? Am I missing something?
As I will connect everything directly, from steppers to drives, sensors to BOB, etc. I don't see the need for plugs or having to take the wires out...
Probably for the smaller 'portable' machines.
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