Hi Kelly, Interesting about commutation electronics. The ERM that seems to fail diagnostics is Jinlong's Z7AL2B1690002, perhaps the same as Precision Microdrives' 307-103 (links below). www.vibration-motor.com/.../cylindrical-Z7AL2B1690002.html www.precisionmicrodrives.com/.../307-103-9mm-vibration-motor-25mm-type Some details: Upon completing diagnostics, DRV2624 's status register (0x01) reports value 0x88, so "process done" and "diagnostics fail" are only bits set. Values for Z & K are as follows: Z: 16 K: 127 --> 2.549ohms, and fairly repeatable. (Upon removing the ERM, 0.0ohms is properly reported.) Perhaps the reported impedance is telling? Currently ERM is being controlled in open-loop mode, clamp voltages have been configured, but no auto-calibration step has been conducted. Please suggest any direction you can think of to assess why diagnostics might fail. Thanks, Alex
↧
