Hi Team,
The customer intends to use a current clamp to measure coil current when the static torque of the stepper motor is driven by 8818, but the measured static torque current is not as expected.
The design has a static torque current Vref = 0.6V and the corresponding current calculated from the manual should be 0.75A. While in actual measurements, the voltage value of Vref is 0.6V without exception, but no current of 0.75A is measured.
More information:
- Operating torque coil current is 1.8A and the measure is as expected.
- Current clamp calibration is confirmed to be correct.
- To verify if the measurement method is correct, the customer also measured 8818 die static torque current for other projects and the measurement was as expected by the design.
Could you help check this case? Thanks.
Best Regards,
Cherry