Tool/software:
Hi support team all.
Is it necessary to cycle the power after following the write procedure in the data sheet so that the settings from the shadow register are transferred and stored in the EEPROM?
Currently, there are many cases where the device does not operate as set unless the power is cycled after executing the write permission from the shadow register to the EEPROM.
Best regards,
Higa
Hi Joshua-san
Sorry for the delay.
Thank you for answering.
Currently, abnormal behavior has been confirmed after writing to EEPROM.
To be specific, IPD is used in the startup sequence, but the IPD does not operate as set.
However, when the power is turned on again, it operates as set.
This can be reproduced with MCT8316AEVM, and it is very reproducible.
The procedure for confirming abnormal behavior is as follows.
After turning on VM=24V, the following procedure is performed to confirm.
1. Write the factory default EEPROM state (initialization)
{
"signature": "oneui-register-data",
"data": [
[
{
"idx": 0,
"id": "isd_config",
"value": "0x64738C20"
},
{
"idx": 1,
"id": "motor_startup1",
"value": "0x28200000"
},
{
"idx": 2,
"id": "motor_startup2",
"value": "0x0B6807D0"
},
{
"idx": 3,
"id": "closed_loop1",
"value": "0x2306600C"
},
{
"idx": 4,
"id": "closed_loop2",
"value": "0x0D3201B5"
},
{
"idx": 5,
"id": "closed_loop3",
"value": "0x1BAD0000"
},
{
"idx": 6,
"id": "closed_loop4",
"value": "0x00000000"
},
{
"idx": 7,
"id": "const_speed",
"value": "0x00000000"
},
{
"idx": 8,
"id": "const_pwr",
"value": "0x3EC80106"
},
{
"idx": 9,
"id": "150_deg_two_ph_profile",
"value": "0x00000000"
},
{
"idx": 10,
"id": "150_deg_three_ph_profile",
"value": "0x00000000"
},
{
"idx": 11,
"id": "trap_config1",
"value": "0x000D0000"
},
{
"idx": 12,
"id": "trap_config2",
"value": "0x00000000"
}
],
[
{
"idx": 0,
"id": "fault_config1",
"value": "0x70D00888"
},
{
"idx": 1,
"id": "fault_config2",
"value": "0x00000000"
}
],
[
{
"idx": 0,
"id": "gd_config1",
"value": "0x1C450100"
},
{
"idx": 1,
"id": "gd_config2",
"value": "0x14200000"
}
],
[
{
"idx": 0,
"id": "pin_config1",
"value": "0x00000000"
},
{
"idx": 1,
"id": "pin_config2",
"value": "0x00101462"
},
{
"idx": 2,
"id": "device_config",
"value": "0x4000F00F"
},
{
"idx": 3,
"id": "peri_config",
"value": "0x00000000"
}
],
[
{
"idx": 0,
"id": "ana_trim3",
"value": "0x48004800"
},
{
"idx": 1,
"id": "ana_trim4",
"value": "0x00000000"
},
{
"idx": 2,
"id": "ana_trim5",
"value": "0x000003F9"
},
{
"idx": 3,
"id": "ana_trim6",
"value": "0x00000000"
},
{
"idx": 4,
"id": "ana_trim7",
"value": "0x00000000"
},
{
"idx": 5,
"id": "ana_trim8",
"value": "0x00005281"
},
{
"idx": 6,
"id": "ana_trim9",
"value": "0x00A1C921"
},
{
"idx": 7,
"id": "ana_trim10",
"value": "0x536C0137"
}
],
[
{
"idx": 0,
"id": "algo_reserved1",
"value": "0x00000000"
},
{
"idx": 1,
"id": "algo_reserved2",
"value": "0x00000000"
},
{
"idx": 2,
"id": "algo_reserved3",
"value": "0x00000000"
}
],
[
{
"idx": 0,
"id": "gate_driver_fault_status",
"value": "0x00000000"
},
{
"idx": 1,
"id": "controller_fault_status",
"value": "0x00000000"
}
],
[
{
"idx": 0,
"id": "sys_status1",
"value": "0x00000000"
},
{
"idx": 1,
"id": "sys_status2",
"value": "0x60010000"
},
{
"idx": 2,
"id": "sys_status3",
"value": "0x00000000"
}
],
[
{
"idx": 0,
"id": "device_ctrl",
"value": "0x00000000"
}
],
[
{
"idx": 0,
"id": "algo_ctrl1",
"value": 0
}
]
]
}
2. Read back and confirm that the writing was successful
3. Write the attached settings to EEPROM
{
"signature": "oneui-register-data",
"data": [
[
{
"idx": 0,
"id": "isd_config",
"value": "0x6F04C140"
},
{
"idx": 1,
"id": "motor_startup1",
"value": "0x55489195"
},
{
"idx": 2,
"id": "motor_startup2",
"value": "0x1A295990"
},
{
"idx": 3,
"id": "closed_loop1",
"value": "0x0E396632"
},
{
"idx": 4,
"id": "closed_loop2",
"value": "0x04A6E4C8"
},
{
"idx": 5,
"id": "closed_loop3",
"value": "0x4CC40109"
},
{
"idx": 6,
"id": "closed_loop4",
"value": "0x000CE944"
},
{
"idx": 7,
"id": "const_speed",
"value": "0x00A00504"
},
{
"idx": 8,
"id": "const_pwr",
"value": "0x0C804C84"
},
{
"idx": 9,
"id": "150_deg_two_ph_profile",
"value": "0x36DB6DA6"
},
{
"idx": 10,
"id": "150_deg_three_ph_profile",
"value": "0x36DB6D80"
},
{
"idx": 11,
"id": "trap_config1",
"value": "0x054BA106"
},
{
"idx": 12,
"id": "trap_config2",
"value": "0x3A880000"
}
],
[
{
"idx": 0,
"id": "fault_config1",
"value": "0x78F43025"
},
{
"idx": 1,
"id": "fault_config2",
"value": "0x7247A009"
}
],
[
{
"idx": 0,
"id": "gd_config1",
"value": "0x1C440001"
},
{
"idx": 1,
"id": "gd_config2",
"value": "0x14200000"
}
],
[
{
"idx": 0,
"id": "pin_config1",
"value": "0x2D720644"
},
{
"idx": 1,
"id": "pin_config2",
"value": "0x080C0000"
},
{
"idx": 2,
"id": "device_config",
"value": "0x7FFF0000"
},
{
"idx": 3,
"id": "peri_config",
"value": "0x00000000"
}
],
[
{
"idx": 0,
"id": "ana_trim3",
"value": "0x48004800"
},
{
"idx": 1,
"id": "ana_trim4",
"value": "0x00000000"
},
{
"idx": 2,
"id": "ana_trim5",
"value": "0x000003D4"
},
{
"idx": 3,
"id": "ana_trim6",
"value": "0x00000000"
},
{
"idx": 4,
"id": "ana_trim7",
"value": "0x00000000"
},
{
"idx": 5,
"id": "ana_trim8",
"value": "0x00004963"
},
{
"idx": 6,
"id": "ana_trim9",
"value": "0x008DA8A0"
},
{
"idx": 7,
"id": "ana_trim10",
"value": "0x536C0F3C"
}
],
[
{
"idx": 0,
"id": "algo_reserved1",
"value": "0x00000000"
},
{
"idx": 1,
"id": "algo_reserved2",
"value": "0x00000000"
},
{
"idx": 2,
"id": "algo_reserved3",
"value": "0x00000000"
}
],
[
{
"idx": 0,
"id": "gate_driver_fault_status",
"value": "0x00000000"
},
{
"idx": 1,
"id": "controller_fault_status",
"value": "0x00000000"
}
],
[
{
"idx": 0,
"id": "sys_status1",
"value": "0x00F10000"
},
{
"idx": 1,
"id": "sys_status2",
"value": "0x60010000"
},
{
"idx": 2,
"id": "sys_status3",
"value": "0x00000000"
}
],
[
{
"idx": 0,
"id": "device_ctrl",
"value": "0x00008000"
}
],
[
{
"idx": 0,
"id": "algo_ctrl1",
"value": "0x00000000"
}
]
]
}
4. Read back and confirm that the writing was successful
5. When the motor rotates, an "IPD frequency fault" occurs and the motor does not rotate.
The waveform at startup at this time is as follows.
Light blue : Phase A voltage , Red : Phase B voltage , Orange : Phase C voltage , Blue : Phase B current , Purple : Phase C current
6. Turn the VM off and on again.
7. When the motor rotates again, no fault occurs and it rotates without any problems.
The waveform is as follows.
It is clear that the IPD operation is not as set in 5.
Also, I do not understand why the operation is as set when the power is turned on again in 6.
Could you please explain the reason for this?
Even though we have verified by reading back that writing to the EEPROM is being done correctly, this abnormal behavior is occurring, and it poses the risk of losing important business.
We would appreciate your cooperation in resolving this issue.
Best regards,
Higa
Joshua-san
What we are concerned about is that the IPD settings (especially current threshold: IPS_CURRENT_THR,IPD_CLK_FREQ) are not reflected correctly, as can be seen in the waveform data presented earlier.
Also, it is inexplicable that cycling the power after writing to EEPROM will set the correct settings.
We need to clarify the reason for this, so please help us.
Regards,
HIga
