I am using Keling KL23H276-30 steppers, wired bipolar parallel. They are 4.2 amps/phase so according to the 540 manual I should use a 4.2k resistor - but - the drives only put out 3.5 amps so should I use a 3.5k resistor instead? What about wattage? Does it matter how many watts the resistor is rated?
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