MCT8329A: Motor Driver tuning issue with MCT8329A1I

Hi Kesav,

Can you provide pole pair of the motor.

Did you try using default JSON? 

What is the max speed you are able to achieve? Are you seeing any fault or saturation? 

Please share your JSON file.

Thanks and Best Regards

Venkatadri S

Hello Venkatadri S, 

Thanks for the reply.

The current consumption is approximately 1.634 Amps at 25.2V at the current max speed - although the pressure is well down on where it needs to be (about 50% of required)

With a 3rd party driver running the pump at the maximum speed the current consumption is 2.51Amps

I will find the duty cycle setting for our maximum pressure setting and advise in a second post.

Please see below the pump drawing.

We used the default settings from the TI tuning kit - 

Please find the JSON file below:

{
  "signature": "oneui-register-data",
  "data": [
    [
      {
        "idx": 0,
        "id": "isd_config",
        "value": "0x7F404D02"
      },
      {
        "idx": 1,
        "id": "motor_startup1",
        "value": "0x6C9265B7"
      },
      {
        "idx": 2,
        "id": "motor_startup2",
        "value": "0x332D3295"
      },
      {
        "idx": 3,
        "id": "closed_loop1",
        "value": "0x1025E600"
      },
      {
        "idx": 4,
        "id": "closed_loop2",
        "value": "0x02A1A418"
      },
      {
        "idx": 5,
        "id": "closed_loop3",
        "value": "0x34C92001"
      },
      {
        "idx": 6,
        "id": "closed_loop4",
        "value": "0x001AC953"
      },
      {
        "idx": 7,
        "id": "const_speed",
        "value": "0x30010000"
      },
      {
        "idx": 8,
        "id": "const_pwr",
        "value": "0x00000640"
      },
      {
        "idx": 9,
        "id": "150_deg_two_ph_profile",
        "value": "0x24DB7200"
      },
      {
        "idx": 10,
        "id": "150_deg_three_ph_profile",
        "value": "0x48DB6946"
      },
      {
        "idx": 11,
        "id": "ref_profiles1",
        "value": "0x032184A6"
      },
      {
        "idx": 12,
        "id": "ref_profiles2",
        "value": "0x34C80AFC"
      },
      {
        "idx": 13,
        "id": "ref_profiles3",
        "value": "0x4787D70C"
      },
      {
        "idx": 14,
        "id": "ref_profiles4",
        "value": "0x000C9932"
      },
      {
        "idx": 15,
        "id": "ref_profiles5",
        "value": "0x1F6BF200"
      },
      {
        "idx": 16,
        "id": "ref_profiles6",
        "value": "0x00708000"
      }
    ],
    [
      {
        "idx": 0,
        "id": "algo_ctrl1",
        "value": "0x20000000"
      },
      {
        "idx": 1,
        "id": "device_ctrl",
        "value": "0x21DB8000"
      }
    ],
    [
      {
        "idx": 0,
        "id": "ana_trim3",
        "value": "0x00000000"
      },
      {
        "idx": 1,
        "id": "ana_trim4",
        "value": "0x00000000"
      },
      {
        "idx": 2,
        "id": "ana_trim5",
        "value": "0x00000000"
      },
      {
        "idx": 3,
        "id": "ana_trim6",
        "value": "0x00000000"
      },
      {
        "idx": 4,
        "id": "ana_trim7",
        "value": "0x00000000"
      },
      {
        "idx": 5,
        "id": "ana_trim8",
        "value": "0x00000000"
      },
      {
        "idx": 6,
        "id": "ana_trim9",
        "value": "0x00000000"
      },
      {
        "idx": 7,
        "id": "ana_trim10",
        "value": "0x00000000"
      }
    ],
    [
      {
        "idx": 0,
        "id": "fault_config1",
        "value": "0x71783604"
      },
      {
        "idx": 1,
        "id": "fault_config2",
        "value": "0x7085C00A"
      }
    ],
    [
      {
        "idx": 0,
        "id": "gate_driver_fault_status",
        "value": "0x00000000"
      },
      {
        "idx": 1,
        "id": "controller_fault_status",
        "value": "0x00000000"
      }
    ],
    [
      {
        "idx": 0,
        "id": "gd_config1",
        "value": "0x000600FC"
      },
      {
        "idx": 1,
        "id": "gd_config2",
        "value": "0x00000000"
      }
    ],
    [
      {
        "idx": 0,
        "id": "pin_config1",
        "value": "0x20600004"
      },
      {
        "idx": 1,
        "id": "pin_config2",
        "value": "0x3E0020AA"
      },
      {
        "idx": 2,
        "id": "device_config",
        "value": "0x27100008"
      }
    ],
    [
      {
        "idx": 0,
        "id": "sys_status1",
        "value": "0x00000000"
      },
      {
        "idx": 1,
        "id": "sys_status2",
        "value": "0x00000000"
      },
      {
        "idx": 2,
        "id": "sys_status3",
        "value": "0x00000000"
      }
    ]
  ]
}

Hi Kesav,

Thanks for providing requested details.

I will look into the details and update you by tomorrow.

Thanks and Best Regards

Venkatadri S

Hi Kesav,

In the JSON file you have shared two configurations looks not proper, CONST_PWR  MAX Speed field are 00.

Can you try the default JSON as is?