Motor current rating

I got bipolar stepper motor with 4 wires (two windings).
The motor has rating of 4.1A. What does this mean?
Does it mean the total current from all wires or is it current per windings (two wire)? Or is it current per wire?
Because, I made circuit to supply 2A to each wire, and there are four wires connected to the motor, so the total will be 8Amps?
I also think the bipolar motor energizes one winding at a time, which means two wires, which means only 4Amps will be inside the motor at a time.
I am not sure what this 4.1A in the spec means. If anyone knows please let me know.

Thanks.

It's usually specified by phase. These specs add even more difficulty: https://www.electro-tech-online.com/custompdfs/2012/01/stepspec.pdf Note it says 2A/phase and it has the configuration.

Woah?

the OP said:

Because, I made circuit to supply 2A to each wire, and there are four wires connected to the motor, so the total will be 8Amps?

Click to expand...

For now let's pretend no microstepping.

You need to have a return. There will be 4.1 Amps/per phase.

Your drivers need to be SOA (Safe Operating Area) rated for 4.1A.

You missed a fundamental concept. The windings in this type of motor has to be driven by an H-bridge, so two "H-bridges" are required. The winding polarity will need to be reversed to step the motor, so that's the reason for the "H-bridge".

Look at fig 2 here: http://hades.mech.northwestern.edu/index.php/Stepper_Motor_Theory

The diagram might be harder to understand. If 1A and 1b showed a (-) in the diagram, I would show them as a "0" or X meaning unconnected or at the same potential.