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MCF8329A: Current saturation error on MCF8329RREVM

Emrah Güven
Prodigy 10 points
Part Number: MCF8329A

Tool/software:

Hello, I am currently working on a project using MCF8329RREVM evaluation board.  I am receiving current saturation error during open loop to closed loop transition.  

meanwhile I see near zero or even negative values on the current display (Motor studio) 

This board comes with a 0.005R shunt. I have configured the current shunt amplifier as recommended.  Here you can find my configuration file 

Can you please inform me about possible cause of this behaviour?

  • 0
    Prodigy 10 points

    File seem not uploded. Here in text format :

    {
    "signature":"oneui-register-data",
    "data":[
    [
    {
    "idx":0,
    "id":"ISD_CONFIG",
    "value":"0x6C230C3C",
    "addr":"0x00000080"
    },
    {
    "idx":1,
    "id":"REV_DRIVE_CONFIG",
    "value":"0xA8200000",
    "addr":"0x00000082"
    },
    {
    "idx":2,
    "id":"MOTOR_STARTUP1",
    "value":"0x4764D104",
    "addr":"0x00000084"
    },
    {
    "idx":3,
    "id":"MOTOR_STARTUP2",
    "value":"0xAB22A00D",
    "addr":"0x00000086"
    },
    {
    "idx":4,
    "id":"CLOSED_LOOP1",
    "value":"0x0E3192BF",
    "addr":"0x00000088"
    },
    {
    "idx":5,
    "id":"CLOSED_LOOP2",
    "value":"0x99E50155",
    "addr":"0x0000008A"
    },
    {
    "idx":6,
    "id":"CLOSED_LOOP3",
    "value":"0x45800002",
    "addr":"0x0000008C"
    },
    {
    "idx":7,
    "id":"CLOSED_LOOP4",
    "value":"0x298A92C0",
    "addr":"0x0000008E"
    },
    {
    "idx":8,
    "id":"REF_PROFILES1",
    "value":"0x00000000",
    "addr":"0x00000094"
    },
    {
    "idx":9,
    "id":"REF_PROFILES2",
    "value":"0x00000000",
    "addr":"0x00000096"
    },
    {
    "idx":10,
    "id":"REF_PROFILES3",
    "value":"0x00000000",
    "addr":"0x00000098"
    },
    {
    "idx":11,
    "id":"REF_PROFILES4",
    "value":"0x00000000",
    "addr":"0x0000009A"
    },
    {
    "idx":12,
    "id":"REF_PROFILES5",
    "value":"0x00000000",
    "addr":"0x0000009C"
    },
    {
    "idx":13,
    "id":"REF_PROFILES6",
    "value":"0x00000000",
    "addr":"0x0000009E"
    }
    ],
    [
    {
    "idx":0,
    "id":"FAULT_CONFIG1",
    "value":"0x465A31A6",
    "addr":"0x00000090"
    },
    {
    "idx":1,
    "id":"FAULT_CONFIG2",
    "value":"0x71422888",
    "addr":"0x00000092"
    }
    ],
    [
    {
    "idx":0,
    "id":"INT_ALGO_1",
    "value":"0xA03141BD",
    "addr":"0x000000A0"
    },
    {
    "idx":1,
    "id":"INT_ALGO_2",
    "value":"0x000001A1",
    "addr":"0x000000A2"
    }
    ],
    [
    {
    "idx":0,
    "id":"PIN_CONFIG",
    "value":"0x08000000",
    "addr":"0x000000A4"
    },
    {
    "idx":1,
    "id":"DEVICE_CONFIG1",
    "value":"0x00101466",
    "addr":"0x000000A6"
    },
    {
    "idx":2,
    "id":"DEVICE_CONFIG2",
    "value":"0xC000F007",
    "addr":"0x000000A8"
    },
    {
    "idx":3,
    "id":"PERI_CONFIG1",
    "value":"0x81E81F20",
    "addr":"0x000000AA"
    },
    {
    "idx":4,
    "id":"GD_CONFIG1",
    "value":"0x0C000101",
    "addr":"0x000000AC"
    },
    {
    "idx":5,
    "id":"GD_CONFIG2",
    "value":"0x00020333",
    "addr":"0x000000AE"
    }
    ],
    [
    {
    "idx":0,
    "id":"GATE_DRIVER_FAULT_STATUS",
    "value":"0x00000000",
    "addr":"0x000000E0"
    },
    {
    "idx":1,
    "id":"CONTROLLER_FAULT_STATUS",
    "value":"0x00000000",
    "addr":"0x000000E2"
    }
    ],
    [
    {
    "idx":0,
    "id":"ALGO_STATUS",
    "value":"0x00000004",
    "addr":"0x000000E4"
    },
    {
    "idx":1,
    "id":"MTR_PARAMS",
    "value":"0x00000000",
    "addr":"0x000000E6"
    },
    {
    "idx":2,
    "id":"ALGO_STATUS_MPET",
    "value":"0x0A000000",
    "addr":"0x000000E8"
    }
    ],
    [
    {
    "idx":0,
    "id":"ALGO_CTRL1",
    "value":"0x8A500000",
    "addr":"0x000000EA"
    }
    ],
    [
    {
    "idx":0,
    "id":"ALGO_DEBUG1",
    "value":"0x83330000",
    "addr":"0x000000EC"
    },
    {
    "idx":1,
    "id":"ALGO_DEBUG2",
    "value":"0x00000020",
    "addr":"0x000000EE"
    },
    {
    "idx":2,
    "id":"CURRENT_PI",
    "value":"0x033E03BB",
    "addr":"0x000000F0"
    },
    {
    "idx":3,
    "id":"SPEED_PI",
    "value":"0x022A012A",
    "addr":"0x000000F2"
    },
    {
    "idx":4,
    "id":"DAC_1",
    "value":"0x00000000",
    "addr":"0x000000F4"
    }
    ],
    [
    {
    "idx":0,
    "id":"ALGORITHM_STATE",
    "value":"0x00000000",
    "addr":"0x00000196"
    },
    {
    "idx":1,
    "id":"FG_SPEED_FDBK",
    "value":"0x7FFFFFFF",
    "addr":"0x0000019C"
    },
    {
    "idx":2,
    "id":"BUS_CURRENT",
    "value":"0x00000000",
    "addr":"0x0000040E"
    },
    {
    "idx":3,
    "id":"PHASE_CURRENT_A",
    "value":"0x00100000",
    "addr":"0x0000043C"
    },
    {
    "idx":4,
    "id":"PHASE_CURRENT_B",
    "value":"0xFFF00000",
    "addr":"0x0000043E"
    },
    {
    "idx":5,
    "id":"PHASE_CURRENT_C",
    "value":"0x00000000",
    "addr":"0x00000440"
    },
    {
    "idx":6,
    "id":"CSA_GAIN_FEEDBACK",
    "value":"0x00000003",
    "addr":"0x00000450"
    },
    {
    "idx":7,
    "id":"VOLTAGE_GAIN_FEEDBACK",
    "value":"0x00000000",
    "addr":"0x00000458"
    },
    {
    "idx":8,
    "id":"VM_VOLTAGE",
    "value":"0x009C0000",
    "addr":"0x0000045C"
    },
    {
    "idx":9,
    "id":"PHASE_VOLTAGE_VA",
    "value":"0x009D9DDA",
    "addr":"0x00000460"
    },
    {
    "idx":10,
    "id":"PHASE_VOLTAGE_VB",
    "value":"0x00F19EFF",
    "addr":"0x00000462"
    },
    {
    "idx":11,
    "id":"PHASE_VOLTAGE_VC",
    "value":"0x00EAB160",
    "addr":"0x00000464"
    },
    {
    "idx":12,
    "id":"SIN_COMMUTATION_ANGLE",
    "value":"0x00000000",
    "addr":"0x000004AA"
    },
    {
    "idx":13,
    "id":"COS_COMMUTATION_ANGLE",
    "value":"0x00000000",
    "addr":"0x000004AC"
    },
    {
    "idx":14,
    "id":"IALPHA",
    "value":"0x00000000",
    "addr":"0x000004CC"
    },
    {
    "idx":15,
    "id":"IBETA",
    "value":"0x00000000",
    "addr":"0x000004CE"
    },
    {
    "idx":16,
    "id":"VALPHA",
    "value":"0x00000000",
    "addr":"0x000004D0"
    },
    {
    "idx":17,
    "id":"VBETA",
    "value":"0x00000000",
    "addr":"0x000004D2"
    },
    {
    "idx":18,
    "id":"ID",
    "value":"0x00000000",
    "addr":"0x000004DC"
    },
    {
    "idx":19,
    "id":"IQ",
    "value":"0x00000000",
    "addr":"0x000004DE"
    },
    {
    "idx":20,
    "id":"VD",
    "value":"0x00000000",
    "addr":"0x000004E0"
    },
    {
    "idx":21,
    "id":"VQ",
    "value":"0x00000000",
    "addr":"0x000004E2"
    },
    {
    "idx":22,
    "id":"IQ_REF_ROTOR_ALIGN",
    "value":"0x00000000",
    "addr":"0x0000051A"
    },
    {
    "idx":23,
    "id":"SPEED_REF_OPEN_LOOP",
    "value":"0x00000000",
    "addr":"0x00000532"
    },
    {
    "idx":24,
    "id":"IQ_REF_OPEN_LOOP",
    "value":"0x00000000",
    "addr":"0x00000542"
    },
    {
    "idx":25,
    "id":"SPEED_REF_CLOSED_LOOP",
    "value":"0x00000000",
    "addr":"0x000005D0"
    },
    {
    "idx":26,
    "id":"ID_REF_CLOSED_LOOP",
    "value":"0x00000000",
    "addr":"0x0000060A"
    },
    {
    "idx":27,
    "id":"IQ_REF_CLOSED_LOOP",
    "value":"0x00000000",
    "addr":"0x0000060C"
    },
    {
    "idx":28,
    "id":"ISD_STATE",
    "value":"0x00000000",
    "addr":"0x000006B0"
    },
    {
    "idx":29,
    "id":"ISD_SPEED",
    "value":"0x37455003",
    "addr":"0x000006BA"
    },
    {
    "idx":30,
    "id":"IPD_STATE",
    "value":"0x00000000",
    "addr":"0x000006E4"
    },
    {
    "idx":31,
    "id":"IPD_ANGLE",
    "value":"0x00000000",
    "addr":"0x0000071A"
    },
    {
    "idx":32,
    "id":"ED",
    "value":"0x00000000",
    "addr":"0x0000075C"
    },
    {
    "idx":33,
    "id":"EQ",
    "value":"0x00000000",
    "addr":"0x0000075E"
    },
    {
    "idx":34,
    "id":"SPEED_FDBK",
    "value":"0x00000000",
    "addr":"0x0000076E"
    },
    {
    "idx":35,
    "id":"THETA_EST",
    "value":"0x00000000",
    "addr":"0x00000774"
    }
    ]
    ]
    }
  • 0 in reply to Emrah Güven
    TI__Mastermind 23372 points

    Hi

    This thread got missed. 

    CURRENT SATURATION error shows up when DC bus voltage is not sufficient or motor may be not on load.

    In no load condition even with small command reference motor can speed up  to max speed.

    We will look at JSON and get back to you.

    Thanks and Best Regards

    Venkatadri S

  • 0 in reply to Venkatadri Shantaram84961
    TI__Mastermind 23372 points

    Hi

    Is there any improvement?

    Also, looked at the JSON file, resistance is 6mOhm is that correct?

    Can you re check parameters R, L are measured properly or if you have motor data sheet please share it.

    Thanks and Best Regards

    Venkatadri S