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How much current does a stepper motor need?
Stepper motors have a rated voltage and current. A typical stepper motor like our NEMA 17 might have a rated voltage of 2.8 Volts and a maximum current of 1.68 Amps. This basically means if you hook it up to 2.8 Volts it will draw 1.68 Amps.
What is the rpm of a stepper motor?
Modern stepper motors can reach rotation speeds of up to 1500 RPM, taking into consideration that the motor torque curve decreases considerably with the increasing of the step frequency.
What do you need to know about a stepper motor?
Continuous Current – The maximum current that the driver can supply to the motor. “Peak” current ratings are not applicable to stepper motors. Always go by the “continuous” current rating. You will also need to know the electrical specifications for the motor. There are 2 critical parameters:
What’s the difference between voltage and continuous current on a stepper?
Voltage – The maximum voltage that the driver can supply to the motor. Continuous Current – The maximum current that the driver can supply to the motor. “Peak” current ratings are not applicable to stepper motors. Always go by the “continuous” current rating.
What happens if you mismatch the driver on a stepper?
Mismatched motors and drivers can result in disappointing performance. Or worse: damage to the motor and/or controller. Voltage – The maximum voltage that the driver can supply to the motor. Continuous Current – The maximum current that the driver can supply to the motor. “Peak” current ratings are not applicable to stepper motors.
How are amps per phase calculated on a stepper?
Amps per phase – This is the maximum current that the motor windings can handle without overheating. Resistance per phase – This is the resistance of each phase. A Voltage rating is often stated. It is usually calculated from the two above – but not always. It is better to calculate yourself from the above parameters using Ohm’s Law . Obey the Law!