MCT8329EVM: I2C registers show wrong values

realman wang

Prodigy 20 points

Part Number: MCT8329EVM
Other Parts Discussed in Thread: MCT8329A

We use MCT8329EVM to drive an eBike BLDC motor.

The motor specification is: 36V, max 580W. no loading.

We try to startup motor by align, double align, IPD and slow first.

Only slow first can work. All other methods are fail.

However, we turn the parameters and set various duty cycle as below:

eBike motor 36V batt.	duty %	=	10	20	30	40	50	60	70
ISD_CONFIG	(0x0080)	=	0x7F404D06	0x7F404D06	0x7F404D06	0x7F404D06	0x7F404D06	0x7F404D06	0x7F404D06
MOTOR_STARTUP1	(0x0082)	=	0x6C9265B8	0x6C9265B8	0x6C9265B8	0x6C9265B8	0x6C9265B8	0x6C9265B8	0x6C9265B8
MOTOR_STARTUP2	(0x0084)	=	0x5A18B295	0x5A18B295	0x5A18B295	0x5A18B295	0x5A18B295	0x5A18B295	0x5A18B295
CLOSED_LOOP1	(0x0086)	=	0x1025E600	0x1025E600	0x1025E600	0x1025E600	0x1025E600	0x1025E600	0x1025E600
CLOSED_LOOP2	(0x0088)	=	0x02A1A428	0x02A1A428	0x02A1A428	0x02A1A428	0x02A1A428	0x02A1A428	0x02A1A428
CLOSED_LOOP3	(0x008A)	=	0x34C92001	0x34C92001	0x34C92001	0x34C92001	0x34C92001	0x34C92001	0x34C92001
CLOSED_LOOP4	(0x008C)	=	0x001AC953	0x001AC953	0x001AC953	0x001AC953	0x001AC953	0x001AC953	0x001AC953
CONST_SPEED	(0x008E)	=	0x30010000	0x30010000	0x30010000	0x30010000	0x30010000	0x30010000	0x30010000
CONST_PWR	(0x0090)	=	0x1F400640	0x1F400640	0x1F400640	0x1F400640	0x1F400640	0x1F400640	0x1F400640
FAULT_CONFIG1	(0x0092)	=	0x71783624	0x71783624	0x71783624	0x71783624	0x71783624	0x71783624	0x71783624
FAULT_CONFIG2	(0x0094)	=	0x7C85C00A	0x7C85C00A	0x7C85C00A	0x7C85C00A	0x7C85C00A	0x7C85C00A	0x7C85C00A
150_DEG_TWO_PH_PROFILE	(0x0096)	=	0x24DB7200	0x24DB7200	0x24DB7200	0x24DB7200	0x24DB7200	0x24DB7200	0x24DB7200
150_DEG_THREE_PH_PROFILE	(0x0098)	=	0x48DB6946	0x48DB6946	0x48DB6946	0x48DB6946	0x48DB6946	0x48DB6946	0x48DB6946
REF_PROFILES1	(0x009A)	=	0x032184A6	0x032184A6	0x032184A6	0x032184A6	0x032184A6	0x032184A6	0x032184A6
REF_PROFILES2	(0x009C)	=	0x34C80AFC	0x34C80AFC	0x34C80AFC	0x34C80AFC	0x34C80AFC	0x34C80AFC	0x34C80AFC
REF_PROFILES3	(0x009E)	=	0x4787D70C	0x4787D70C	0x4787D70C	0x4787D70C	0x4787D70C	0x4787D70C	0x4787D70C
REF_PROFILES4	(0x00A0)	=	0x000C9932	0x000C9932	0x000C9932	0x000C9932	0x000C9932	0x000C9932	0x000C9932
REF_PROFILES5	(0x00A2)	=	0x1F6BF200	0x1F6BF200	0x1F6BF200	0x1F6BF200	0x1F6BF200	0x1F6BF200	0x1F6BF200
REF_PROFILES6	(0x00A4)	=	0x00708000	0x00708000	0x00708000	0x00708000	0x00708000	0x00708000	0x00708000
PIN_CONFIG1	(0x00A6)	=	0x20600002	0x20600002	0x20600002	0x20600002	0x20600002	0x20600002	0x20600002
PIN_CONFIG2	(0x00A8)	=	0x3E0020AA	0x3E0020AA	0x3E0020AA	0x3E0020AA	0x3E0020AA	0x3E0020AA	0x3E0020AA
DEVICE_CONFIG	(0x00AA)	=	0x27100008	0x27100008	0x27100008	0x27100008	0x27100008	0x27100008	0x27100008
GD_CONFIG1	(0x00AC)	=	0x000200FC	0x000200FC	0x000200FC	0x000200FC	0x000200FC	0x000200FC	0x000200FC
GD_CONFIG2	(0x00AE)	=	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000
GATE_DRIVER_FAULT_STATUS	(0x00E0)	=	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000
CONTROLLER_FAULT_STATUS	(0x00E2)	=	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000
SYS_STATUS1	(0x00E4)	=	0x00EF18F2	0x00F53344	0x00F54D24	0x00F56682	0x00F58028	0x00F59928	0x00F5B3B6
ALGO_CTRL1	(0x00E6)	=	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000
DEVICE_CTRL	(0x00E8)	=	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000
SYS_STATUS2	(0x00EA)	=	0x20010151	0x20010292	0x200103E3	0x200104DD	0x20010587	0x2001073D	0x200107B2
SYS_STATUS3	(0x00EC)	=	0xFFFFF829	0xFFFFE48E	0xFFFFD6BE	0xFFFFC90B	0xFFFFBC8C	0xFFFFAD9F	0xFFFFA548
INPUT_DUTY	(0x040C)	=	0x06470000	0x0CC78000	0x13460000	0x19B38000	0x200A0000	0x264C8000	0x2CF20000
CURRENT_DUTY	(0x0512)	=	0x067E5138	0x0CC78000	0x134FB156	0x19AB38C3	0x200209E0	0x267C0000	0x2CE9B639
SET_DUTY	(0x0522)	=	0x06928000	0x0CD90000	0x133F8000	0x19BA0000	0x200A0000	0x264A0000	0x2CED8000
MOTOR_SPEED_PU	(0x05CE)	=	0x02282BB3	0x0436AC70	0x0661B778	0x0860AC63	0x0A6FDA3F	0x0C3BCAF3	0x0E2168C3
DC_BUS_POWER_PU	(0x0714)	=	0xEB5FC000	0xB9618000	0x967DC000	0x80000000	0x80000000	0x80000000	0x80000000

the questions:

1. sometimes the startup process may fail.

2. 0x417 seems be a negative value and it keeps 0x80000000 if duty >40%

3. if we set startup frequency < 40Hz, it will short circuit.

4. 0xEC current is always 0xffff, battery power is wrong value

After that, we try another parameters, the tables show below:

0x90 max_spd=64000, max_pwr=1600	PWM duty	=	100%	80%	60%	30%	10%
ISD_CONFIG	(0x0080)	=	0x7F404D06	0x7F404D06	0x7F404D06	0x7F404D06	0x7F404D06
MOTOR_STARTUP1	(0x0082)	=	0x6C9265B8	0x6C9265B8	0x6C9265B8	0x6C9265B8	0x6C9265B8
MOTOR_STARTUP2	(0x0084)	=	0x5A18B295	0x5A18B295	0x5A18B295	0x5A18B295	0x5A18B295
CLOSED_LOOP1	(0x0086)	=	0x3025E600	0x3025E600	0x3025E600	0x3025E600	0x3025E600
CLOSED_LOOP2	(0x0088)	=	0x02A1A428	0x02A1A428	0x02A1A428	0x02A1A428	0x02A1A428
CLOSED_LOOP3	(0x008A)	=	0x34C92001	0x34C92001	0x34C92001	0x34C92001	0x34C92001
CLOSED_LOOP4	(0x008C)	=	0x001AC953	0x001AC953	0x001AC953	0x001AC953	0x001AC953
CONST_SPEED	(0x008E)	=	0x30010000	0x30010000	0x30010000	0x30010000	0x30010000
CONST_PWR	(0x0090)	=	0x7D006400	0x7D006400	0x7D006400	0x7D006400	0x7D006400
FAULT_CONFIG1	(0x0092)	=	0x71783624	0x71783624	0x71783624	0x71783624	0x71783624
FAULT_CONFIG2	(0x0094)	=	0x7C85C00A	0x7C85C00A	0x7C85C00A	0x7C85C00A	0x7C85C00A
150_DEG_TWO_PH_PROFILE	(0x0096)	=	0x24DB7200	0x24DB7200	0x24DB7200	0x24DB7200	0x24DB7200
150_DEG_THREE_PH_PROFILE	(0x0098)	=	0x48DB6946	0x48DB6946	0x48DB6946	0x48DB6946	0x48DB6946
REF_PROFILES1	(0x009A)	=	0x032184A6	0x032184A6	0x032184A6	0x032184A6	0x032184A6
REF_PROFILES2	(0x009C)	=	0x34C80AFC	0x34C80AFC	0x34C80AFC	0x34C80AFC	0x34C80AFC
REF_PROFILES3	(0x009E)	=	0x4787D70C	0x4787D70C	0x4787D70C	0x4787D70C	0x4787D70C
REF_PROFILES4	(0x00A0)	=	0x000C9932	0x000C9932	0x000C9932	0x000C9932	0x000C9932
REF_PROFILES5	(0x00A2)	=	0x1F6BF200	0x1F6BF200	0x1F6BF200	0x1F6BF200	0x1F6BF200
REF_PROFILES6	(0x00A4)	=	0x00708000	0x00708000	0x00708000	0x00708000	0x00708000
PIN_CONFIG1	(0x00A6)	=	0x20600002	0x20600002	0x20600002	0x20600002	0x20600002
PIN_CONFIG2	(0x00A8)	=	0x3E0020AA	0x3E0020AA	0x3E0020AA	0x3E0020AA	0x3E0020AA
DEVICE_CONFIG	(0x00AA)	=	0x27100008	0x27100008	0x27100008	0x27100008	0x27100008
GD_CONFIG1	(0x00AC)	=	0x000200FC	0x000200FC	0x000200FC	0x000200FC	0x000200FC
GD_CONFIG2	(0x00AE)	=	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000
GATE_DRIVER_FAULT_STATUS	(0x00E0)	=	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000
CONTROLLER_FAULT_STATUS	(0x00E2)	=	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000
SYS_STATUS1	(0x00E4)	=	0x00F2FFFE	0x00F3CD0E	0x00F69920	0x00F34D18	0x00ED19B8
ALGO_CTRL1	(0x00E6)	=	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000
DEVICE_CTRL	(0x00E8)	=	0x00000000	0x00000000	0x00000000	0x00000000	0x00000000
SYS_STATUS2	(0x00EA)	=	0x20010BCB	0x200109A1	0x20010751	0x200103AF	0x20010140
SYS_STATUS3	(0x00EC)	=	0xFFFF78C9	0xFFFF931A	0xFFFFAD43	0xFFFFD742	0xFFFFF8A1
INPUT_DUTY	(0x040C)	=	0x3FFF8000	0x333F0000	0x26738000	0x13360000	0x06740000
CURRENT_DUTY	(0x0512)	=	0x3FFF8000	0x333ED4B2	0x2677538B	0x133F0000	0x0677B608
SET_DUTY	(0x0522)	=	0x3FFF8000	0x33320000	0x26738000	0x13360000	0x06488000
MOTOR_SPEED_PU	(0x05CE)	=	0x04D95B38	0x03EF4EDD	0x02FFEACE	0x01811CC1	0x00834C1F
DC_BUS_POWER_PU	(0x0714)	=	0xF0128000	0xF3320000	0xF66D4000	0xFB33C000	0xFF204000

[motor 100+ok]

[8329_dump+ok]

[517379] ISD_CONFIG (0x0080) = 0x7F404D06

[517383] MOTOR_STARTUP1 (0x0082) = 0x6C9265B8

[517388] MOTOR_STARTUP2 (0x0084) = 0x5A18B295

[517392] CLOSED_LOOP1 (0x0086) = 0x3025E600

[517397] CLOSED_LOOP2 (0x0088) = 0x02A1A428

[517401] CLOSED_LOOP3 (0x008A) = 0x34C92001

[517405] CLOSED_LOOP4 (0x008C) = 0x001AC953

[517410] CONST_SPEED (0x008E) = 0x30010000 KP=768/10000, KI=256/1M, Loop_mode=0 1:spd,2:pwr

[517418] CONST_PWR (0x0090) = 0x7D006400 M_spd=64000, M_pwr=1600

[517424] FAULT_CONFIG1 (0x0092) = 0x71783624

[517429] FAULT_CONFIG2 (0x0094) = 0x7C85C00A

[517433] 150_DEG_TWO_PH_PROFILE (0x0096) = 0x24DB7200

[517438] 150_DEG_THREE_PH_PROFILE (0x0098) = 0x48DB6946

[517444] REF_PROFILES1 (0x009A) = 0x032184A6

[517448] REF_PROFILES2 (0x009C) = 0x34C80AFC

[517453] REF_PROFILES3 (0x009E) = 0x4787D70C

[517457] REF_PROFILES4 (0x00A0) = 0x000C9932

[517462] REF_PROFILES5 (0x00A2) = 0x1F6BF200

[517466] REF_PROFILES6 (0x00A4) = 0x00708000

[517471] PIN_CONFIG1 (0x00A6) = 0x20600002

[517475] PIN_CONFIG2 (0x00A8) = 0x3E0020AA

[517479] DEVICE_CONFIG (0x00AA) = 0x27100008

[517483] GD_CONFIG1 (0x00AC) = 0x000200FC Dir= Uni, CSA=0

[517489] GD_CONFIG2 (0x00AE) = 0x00000000

[517493] GATE_DRIVER_FAULT_STATUS (0x00E0) = 0x00000000

[517498] CONTROLLER_FAULT_STATUS (0x00E2) = 0x00000000

[517503] SYS_STATUS1 (0x00E4) = 0x00F2FFFE Volt_mag=24.200, Motor_Spd(eHz)=100.000%

[517511] ALGO_CTRL1 (0x00E6) = 0x00000000

[517515] DEVICE_CTRL (0x00E8) = 0x00000000

[517519] SYS_STATUS2 (0x00EA) = 0x20010BCB State=0x2, Motor_Spd(eHz)=301.900

[517526] SYS_STATUS3 (0x00EC) = 0xFFFF78C9 (BUS_Curr=0xffff)

[517533] INPUT_DUTY (0x040C) = 0x3FFF8000 In_duty=99.997%

[517539] CURRENT_DUTY (0x0512) = 0x3FFF8000 Curr_duty=99.997%

[517545] SET_DUTY (0x0522) = 0x3FFF8000 Set_duty=99.997%

[517550] MOTOR_SPEED_PU (0x05CE) = 0x04D95B38 Motor_Spd=4849.048

[517556] DC_BUS_POWER_PU (0x0714) = 0xF0128000 Motor_Pwr=6001.807

[motor 80+ok]

[8329_dump+ok]

[529834] ISD_CONFIG (0x0080) = 0x7F404D06

[529838] MOTOR_STARTUP1 (0x0082) = 0x6C9265B8

[529842] MOTOR_STARTUP2 (0x0084) = 0x5A18B295

[529847] CLOSED_LOOP1 (0x0086) = 0x3025E600

[529851] CLOSED_LOOP2 (0x0088) = 0x02A1A428

[529855] CLOSED_LOOP3 (0x008A) = 0x34C92001

[529860] CLOSED_LOOP4 (0x008C) = 0x001AC953

[529864] CONST_SPEED (0x008E) = 0x30010000 KP=768/10000, KI=256/1M, Loop_mode=0 1:spd,2:pwr

[529872] CONST_PWR (0x0090) = 0x7D006400 M_spd=64000, M_pwr=1600

[529878] FAULT_CONFIG1 (0x0092) = 0x71783624

[529883] FAULT_CONFIG2 (0x0094) = 0x7C85C00A

[529887] 150_DEG_TWO_PH_PROFILE (0x0096) = 0x24DB7200

[529892] 150_DEG_THREE_PH_PROFILE (0x0098) = 0x48DB6946

[529898] REF_PROFILES1 (0x009A) = 0x032184A6

[529902] REF_PROFILES2 (0x009C) = 0x34C80AFC

[529907] REF_PROFILES3 (0x009E) = 0x4787D70C

[529911] REF_PROFILES4 (0x00A0) = 0x000C9932

[529916] REF_PROFILES5 (0x00A2) = 0x1F6BF200

[529920] REF_PROFILES6 (0x00A4) = 0x00708000

[529925] PIN_CONFIG1 (0x00A6) = 0x20600002

[529929] PIN_CONFIG2 (0x00A8) = 0x3E0020AA

[529933] DEVICE_CONFIG (0x00AA) = 0x27100008

[529937] GD_CONFIG1 (0x00AC) = 0x000200FC Dir= Uni, CSA=0

[529943] GD_CONFIG2 (0x00AE) = 0x00000000

[529947] GATE_DRIVER_FAULT_STATUS (0x00E0) = 0x00000000

[529952] CONTROLLER_FAULT_STATUS (0x00E2) = 0x00000000

[529957] SYS_STATUS1 (0x00E4) = 0x00F3CD0E Volt_mag=24.300, Motor_Spd(eHz)=80.102%

[529965] ALGO_CTRL1 (0x00E6) = 0x00000000

[529969] DEVICE_CTRL (0x00E8) = 0x00000000

[529973] SYS_STATUS2 (0x00EA) = 0x200109A1 State=0x2, Motor_Spd(eHz)=246.500

[529980] SYS_STATUS3 (0x00EC) = 0xFFFF931A

[529987] INPUT_DUTY (0x040C) = 0x333F0000 In_duty=80.072%

[529993] CURRENT_DUTY (0x0512) = 0x333ED4B2 Curr_duty=80.071%

[529999] SET_DUTY (0x0522) = 0x33320000 Set_duty=79.993%

[530004] MOTOR_SPEED_PU (0x05CE) = 0x03EF4EDD Motor_Spd=3934.797

[530010] DC_BUS_POWER_PU (0x0714) = 0xF3320000 Motor_Pwr=6079.883

[motor 60+ok]

[8329_dump+ok]

[535988] ISD_CONFIG (0x0080) = 0x7F404D06

[535992] MOTOR_STARTUP1 (0x0082) = 0x6C9265B8

[535996] MOTOR_STARTUP2 (0x0084) = 0x5A18B295

[536001] CLOSED_LOOP1 (0x0086) = 0x3025E600

[536005] CLOSED_LOOP2 (0x0088) = 0x02A1A428

[536009] CLOSED_LOOP3 (0x008A) = 0x34C92001

[536014] CLOSED_LOOP4 (0x008C) = 0x001AC953

[536018] CONST_SPEED (0x008E) = 0x30010000 KP=768/10000, KI=256/1M, Loop_mode=0 1:spd,2:pwr

[536026] CONST_PWR (0x0090) = 0x7D006400 M_spd=64000, M_pwr=1600

[536032] FAULT_CONFIG1 (0x0092) = 0x71783624

[536037] FAULT_CONFIG2 (0x0094) = 0x7C85C00A

[536041] 150_DEG_TWO_PH_PROFILE (0x0096) = 0x24DB7200

[536046] 150_DEG_THREE_PH_PROFILE (0x0098) = 0x48DB6946

[536052] REF_PROFILES1 (0x009A) = 0x032184A6

[536056] REF_PROFILES2 (0x009C) = 0x34C80AFC

[536061] REF_PROFILES3 (0x009E) = 0x4787D70C

[536065] REF_PROFILES4 (0x00A0) = 0x000C9932

[536070] REF_PROFILES5 (0x00A2) = 0x1F6BF200

[536074] REF_PROFILES6 (0x00A4) = 0x00708000

[536079] PIN_CONFIG1 (0x00A6) = 0x20600002

[536083] PIN_CONFIG2 (0x00A8) = 0x3E0020AA

[536087] DEVICE_CONFIG (0x00AA) = 0x27100008

[536091] GD_CONFIG1 (0x00AC) = 0x000200FC Dir= Uni, CSA=0

[536097] GD_CONFIG2 (0x00AE) = 0x00000000

[536101] GATE_DRIVER_FAULT_STATUS (0x00E0) = 0x00000000

[536106] CONTROLLER_FAULT_STATUS (0x00E2) = 0x00000000

[536111] SYS_STATUS1 (0x00E4) = 0x00F69920 Volt_mag=24.600, Motor_Spd(eHz)=59.816%

[536119] ALGO_CTRL1 (0x00E6) = 0x00000000

[536123] DEVICE_CTRL (0x00E8) = 0x00000000

[536127] SYS_STATUS2 (0x00EA) = 0x20010751 State=0x2, Motor_Spd(eHz)=187.300

[536134] SYS_STATUS3 (0x00EC) = 0xFFFFAD43

[536141] INPUT_DUTY (0x040C) = 0x26738000 In_duty=60.080%

[536147] CURRENT_DUTY (0x0512) = 0x2677538B Curr_duty=60.103%

[536153] SET_DUTY (0x0522) = 0x26738000 Set_duty=60.080%

[536158] MOTOR_SPEED_PU (0x05CE) = 0x02FFEACE Motor_Spd=2999.677

[536164] DC_BUS_POWER_PU (0x0714) = 0xF66D4000 Motor_Pwr=6160.669

[motor 30+ok]

[8329_dump+ok]

[542702] ISD_CONFIG (0x0080) = 0x7F404D06

[542706] MOTOR_STARTUP1 (0x0082) = 0x6C9265B8

[542714] MOTOR_STARTUP2 (0x0084) = 0x5A18B295

[542718] CLOSED_LOOP1 (0x0086) = 0x3025E600

[542723] CLOSED_LOOP2 (0x0088) = 0x02A1A428

[542727] CLOSED_LOOP3 (0x008A) = 0x34C92001

[542731] CLOSED_LOOP4 (0x008C) = 0x001AC953

[542736] CONST_SPEED (0x008E) = 0x30010000 KP=768/10000, KI=256/1M, Loop_mode=0 1:spd,2:pwr

[542744] CONST_PWR (0x0090) = 0x7D006400 M_spd=64000, M_pwr=1600

[542750] FAULT_CONFIG1 (0x0092) = 0x71783624

[542755] FAULT_CONFIG2 (0x0094) = 0x7C85C00A

[542759] 150_DEG_TWO_PH_PROFILE (0x0096) = 0x24DB7200

[542764] 150_DEG_THREE_PH_PROFILE (0x0098) = 0x48DB6946

[542770] REF_PROFILES1 (0x009A) = 0x032184A6

[542774] REF_PROFILES2 (0x009C) = 0x34C80AFC

[542779] REF_PROFILES3 (0x009E) = 0x4787D70C

[542783] REF_PROFILES4 (0x00A0) = 0x000C9932

[542788] REF_PROFILES5 (0x00A2) = 0x1F6BF200

[542792] REF_PROFILES6 (0x00A4) = 0x00708000

[542797] PIN_CONFIG1 (0x00A6) = 0x20600002

[542801] PIN_CONFIG2 (0x00A8) = 0x3E0020AA

[542805] DEVICE_CONFIG (0x00AA) = 0x27100008

[542809] GD_CONFIG1 (0x00AC) = 0x000200FC Dir= Uni, CSA=0

[542815] GD_CONFIG2 (0x00AE) = 0x00000000

[542819] GATE_DRIVER_FAULT_STATUS (0x00E0) = 0x00000000

[542824] CONTROLLER_FAULT_STATUS (0x00E2) = 0x00000000

[542829] SYS_STATUS1 (0x00E4) = 0x00F34D18 Volt_mag=24.300, Motor_Spd(eHz)=30.116%

[542837] ALGO_CTRL1 (0x00E6) = 0x00000000

[542841] DEVICE_CTRL (0x00E8) = 0x00000000

[542845] SYS_STATUS2 (0x00EA) = 0x200103AF State=0x2, Motor_Spd(eHz)=94.300

[542852] SYS_STATUS3 (0x00EC) = 0xFFFFD742

[542859] INPUT_DUTY (0x040C) = 0x13360000 In_duty=30.017%

[542865] CURRENT_DUTY (0x0512) = 0x133F0000 Curr_duty=30.072%

[542871] SET_DUTY (0x0522) = 0x13360000 Set_duty=30.017%

[542876] MOTOR_SPEED_PU (0x05CE) = 0x01811CC1 Motor_Spd=1504.345

[542882] DC_BUS_POWER_PU (0x0714) = 0xFB33C000 Motor_Pwr=6280.054

[motor 10+ok]

[8329_dump+ok]

[551085] ISD_CONFIG (0x0080) = 0x7F404D06

[551089] MOTOR_STARTUP1 (0x0082) = 0x6C9265B8

[551093] MOTOR_STARTUP2 (0x0084) = 0x5A18B295

[551098] CLOSED_LOOP1 (0x0086) = 0x3025E600

[551102] CLOSED_LOOP2 (0x0088) = 0x02A1A428

[551106] CLOSED_LOOP3 (0x008A) = 0x34C92001

[551111] CLOSED_LOOP4 (0x008C) = 0x001AC953

[551115] CONST_SPEED (0x008E) = 0x30010000 KP=768/10000, KI=256/1M, Loop_mode=0 1:spd,2:pwr

[551123] CONST_PWR (0x0090) = 0x7D006400 M_spd=64000, M_pwr=1600

[551129] FAULT_CONFIG1 (0x0092) = 0x71783624

[551134] FAULT_CONFIG2 (0x0094) = 0x7C85C00A

[551138] 150_DEG_TWO_PH_PROFILE (0x0096) = 0x24DB7200

[551143] 150_DEG_THREE_PH_PROFILE (0x0098) = 0x48DB6946

[551149] REF_PROFILES1 (0x009A) = 0x032184A6

[551153] REF_PROFILES2 (0x009C) = 0x34C80AFC

[551158] REF_PROFILES3 (0x009E) = 0x4787D70C

[551162] REF_PROFILES4 (0x00A0) = 0x000C9932

[551167] REF_PROFILES5 (0x00A2) = 0x1F6BF200

[551171] REF_PROFILES6 (0x00A4) = 0x00708000

[551176] PIN_CONFIG1 (0x00A6) = 0x20600002

[551180] PIN_CONFIG2 (0x00A8) = 0x3E0020AA

[551184] DEVICE_CONFIG (0x00AA) = 0x27100008

[551188] GD_CONFIG1 (0x00AC) = 0x000200FC Dir= Uni, CSA=0

[551194] GD_CONFIG2 (0x00AE) = 0x00000000

[551198] GATE_DRIVER_FAULT_STATUS (0x00E0) = 0x00000000

[551203] CONTROLLER_FAULT_STATUS (0x00E2) = 0x00000000

[551208] SYS_STATUS1 (0x00E4) = 0x00ED19B8 Volt_mag=23.700, Motor_Spd(eHz)=10.047%

[551216] ALGO_CTRL1 (0x00E6) = 0x00000000

[551220] DEVICE_CTRL (0x00E8) = 0x00000000

[551224] SYS_STATUS2 (0x00EA) = 0x20010140 State=0x2, Motor_Spd(eHz)=32.000

[551231] SYS_STATUS3 (0x00EC) = 0xFFFFF8A1

[551238] INPUT_DUTY (0x040C) = 0x06740000 In_duty=10.083%

[551244] CURRENT_DUTY (0x0512) = 0x0677B608 Curr_duty=10.106%

[551250] SET_DUTY (0x0522) = 0x06488000 Set_duty=9.818%

[551255] MOTOR_SPEED_PU (0x05CE) = 0x00834C1F Motor_Spd=512.880

[551261] DC_BUS_POWER_PU (0x0714) = 0xFF204000 Motor_Pwr=6378.149

[28533] ISD_CONFIG (0x0080) = 0x7F404D06

[28537] MOTOR_STARTUP1 (0x0082) = 0x6C9265B8

[28542] MOTOR_STARTUP2 (0x0084) = 0x5A18B295

[28546] CLOSED_LOOP1 (0x0086) = 0x3025E600

[28550] CLOSED_LOOP2 (0x0088) = 0x02A1A428

[28554] CLOSED_LOOP3 (0x008A) = 0x34C92001

[28559] CLOSED_LOOP4 (0x008C) = 0x001AC953

[28563] CONST_SPEED (0x008E) = 0x30010000 KP=768/10000, KI=256/1M, Loop_mode=0 1:spd,2:pwr

[28571] CONST_PWR (0x0090) = 0x01900C80 M_spd=800, M_pwr=200

[28577] FAULT_CONFIG1 (0x0092) = 0x71783624

[28581] FAULT_CONFIG2 (0x0094) = 0x7C85C00A

[28585] 150_DEG_TWO_PH_PROFILE (0x0096) = 0x24DB7200

[28590] 150_DEG_THREE_PH_PROFILE (0x0098) = 0x48DB6946

[28595] REF_PROFILES1 (0x009A) = 0x032184A6

[28600] REF_PROFILES2 (0x009C) = 0x34C80AFC

[28604] REF_PROFILES3 (0x009E) = 0x4787D70C

[28608] REF_PROFILES4 (0x00A0) = 0x000C9932

[28613] REF_PROFILES5 (0x00A2) = 0x1F6BF200

[28617] REF_PROFILES6 (0x00A4) = 0x00708000

[28621] PIN_CONFIG1 (0x00A6) = 0x20600002

[28625] PIN_CONFIG2 (0x00A8) = 0x3E0020AA

[28629] DEVICE_CONFIG (0x00AA) = 0x27100008

[28634] GD_CONFIG1 (0x00AC) = 0x000200FC Dir= Uni, CSA=0

[28639] GD_CONFIG2 (0x00AE) = 0x00000000

[28643] GATE_DRIVER_FAULT_STATUS (0x00E0) = 0x00000000

[28648] CONTROLLER_FAULT_STATUS (0x00E2) = 0x00000000

[28653] SYS_STATUS1 (0x00E4) = 0x00F0198A Volt_mag=24.000, Motor_Spd(eHz)=9.977%

[28661] ALGO_CTRL1 (0x00E6) = 0x00000000

[28665] DEVICE_CTRL (0x00E8) = 0x00000000

[28669] SYS_STATUS2 (0x00EA) = 0x20010140 State=0x2, Motor_Spd(eHz)=32.000

[28676] SYS_STATUS3 (0x00EC) = 0xFFFFF880

[28683] INPUT_DUTY (0x040C) = 0x06578000 In_duty=9.909%

[28688] CURRENT_DUTY (0x0512) = 0x067F48C5 Curr_duty=10.152%

[28694] SET_DUTY (0x0522) = 0x06630000 Set_duty=9.979%

[28699] MOTOR_SPEED_PU (0x05CE) = 0x28FFCA8B Motor_Spd=512.490

[28705] DC_BUS_POWER_PU (0x0714) = 0xF6828000 Motor_Pwr=770.343

over 2 years ago

0 Joshua Horlander Cruz over 2 years ago

TI__Mastermind 24860 points

Hi Realman,

When you see startup failures does the nfault pin go low and could you describe that the motor does when the failure occurs?
What is the value of the measured current and voltage values when at 50% duty?
Could you tell me where the short circuit occurs when startup frequency is <40 Hz?
Do these issues continue to occur if the MCT8329A chip is replaced with a known good one?

Regards,

Joshua

0 realman wang over 2 years ago in reply to Joshua Horlander Cruz

Prodigy 20 points

Hi Joshua,

Thanks for your answer.

1. We try to use IPD to startup, the motor shakes for 1~2 seconds and then 0xE2 reports 0xA0000000: IPD frequency fault.
We change IPD_CLK_FREQ from 50Hz to 2000Hz.
All of them can't work.

2. I: ~506mA, V: 40.8V

[duty=50%]
[8329_dump+ok]
[41725] ISD_CONFIG (0x0080) = 0x7F404D06
[41729] MOTOR_STARTUP1 (0x0082) = 0x6C9265B8
[41733] MOTOR_STARTUP2 (0x0084) = 0x5A18B294
[41738] CLOSED_LOOP1 (0x0086) = 0x3025E600
[41742] CLOSED_LOOP2 (0x0088) = 0x02A1A428
[41746] CLOSED_LOOP3 (0x008A) = 0x34C92001
[41750] CLOSED_LOOP4 (0x008C) = 0x001AC953
[41754] CONST_SPEED (0x008E) = 0x30010000 KP=768/10000, KI=256/1M, Loop_mode=0 1:spd,2:pwr
[41763] CONST_PWR (0x0090) = 0x1F403E80 M_spd=16000, M_pwr=1000
[41769] FAULT_CONFIG1 (0x0092) = 0x71783624
[41773] FAULT_CONFIG2 (0x0094) = 0x7C85C00A
[41777] 150_DEG_TWO_PH_PROFILE (0x0096) = 0x24DB7200
[41782] 150_DEG_THREE_PH_PROFILE (0x0098) = 0x48DB6946
[41787] REF_PROFILES1 (0x009A) = 0x032184A6
[41792] REF_PROFILES2 (0x009C) = 0x34C80AFC
[41796] REF_PROFILES3 (0x009E) = 0x4787D70C
[41800] REF_PROFILES4 (0x00A0) = 0x000C9932
[41805] REF_PROFILES5 (0x00A2) = 0x1F6BF200
[41809] REF_PROFILES6 (0x00A4) = 0x00708000
[41813] PIN_CONFIG1 (0x00A6) = 0x20600002
[41817] PIN_CONFIG2 (0x00A8) = 0x3E0020AA
[41821] DEVICE_CONFIG (0x00AA) = 0x27100008
[41826] GD_CONFIG1 (0x00AC) = 0x000200FC Dir= Uni, CSA=0
[41831] GD_CONFIG2 (0x00AE) = 0x00000000
[41835] GATE_DRIVER_FAULT_STATUS (0x00E0) = 0x00000000 Fault:
[41841] CONTROLLER_FAULT_STATUS (0x00E2) = 0x00000000 Fault:
[41847] SYS_STATUS1 (0x00E4) = 0x01978042 Volt_mag=40.700, Motor_Spd(eHz)=50.102%
[41855] ALGO_CTRL1 (0x00E6) = 0x00000000
[41859] DEVICE_CTRL (0x00E8) = 0x00000000
[41863] SYS_STATUS2 (0x00EA) = 0x20010624 motor_run State=0x2, Motor_Spd(eHz)=157.200
[41871] SYS_STATUS3 (0x00EC) = 0xFFFF8E37 BUS_Curr=255.996A, BATT_POW=455.141W
[41878] INPUT_DUTY (0x040C) = 0x201E0000 In_duty=50.183%
[41884] CURRENT_DUTY (0x0512) = 0x201E0000 Curr_duty=50.183%
[41890] SET_DUTY (0x0522) = 0x20028000 Set_duty=50.015%
[41895] MOTOR_SPEED_PU (0x05CE) = 0x0A0D085E Motor_Spd=2512.727, Max_speed=16000
[41903] DC_BUS_POWER_PU (0x0714) = 0xE3384000 Motor_Pwr=449.692, Max_power=1000

3. We connect eBike battery power to the 8329 EVM.
When the motor fault occurs, it trigger the short circuit protect light signal on the battery.
And the battery cut off the power immediately.

4. We have mounted the MCT8329 on our EVB, and the situation is same.

one more thing:
In slow first mode:
a. We can startup from 0% to 10%~100% step 10%, they are almost successful.
However, we run on 10% then speed up to 80% or 90% or 100%, it short circuits immediately.
run on 20% and speetup to 90%, 100%: short circuits
run on 30% or above to any duty: safe

b. We found the deceleration to be very slow. However, when I set FAST_DECEL_EN=1, the deceleration is very fast, but it short circuits immediately.

below are the parameters for duty=0%

[motor 0+ok]
[8329_dump+ok]
[1964992] ISD_CONFIG (0x0080) = 0x7F404D06
[1964996] MOTOR_STARTUP1 (0x0082) = 0x6C9265B8
[1965001] MOTOR_STARTUP2 (0x0084) = 0x5A18B294
[1965006] CLOSED_LOOP1 (0x0086) = 0x3025E600
[1965010] CLOSED_LOOP2 (0x0088) = 0x02A1A428
[1965015] CLOSED_LOOP3 (0x008A) = 0x34C92001
[1965019] CLOSED_LOOP4 (0x008C) = 0x001AC953
[1965024] CONST_SPEED (0x008E) = 0x30010000 KP=768/10000, KI=256/1M, Loop_mode=0 1:spd,2:pwr
[1965033] CONST_PWR (0x0090) = 0x1F403E80 M_spd=16000, M_pwr=1000
[1965039] FAULT_CONFIG1 (0x0092) = 0x71783624
[1965044] FAULT_CONFIG2 (0x0094) = 0x7C85C00A
[1965048] 150_DEG_TWO_PH_PROFILE (0x0096) = 0x24DB7200
[1965054] 150_DEG_THREE_PH_PROFILE (0x0098) = 0x48DB6946
[1965059] REF_PROFILES1 (0x009A) = 0x032184A6
[1965064] REF_PROFILES2 (0x009C) = 0x34C80AFC
[1965068] REF_PROFILES3 (0x009E) = 0x4787D70C
[1965073] REF_PROFILES4 (0x00A0) = 0x000C9932
[1965077] REF_PROFILES5 (0x00A2) = 0x1F6BF200
[1965082] REF_PROFILES6 (0x00A4) = 0x00708000
[1965086] PIN_CONFIG1 (0x00A6) = 0x20600002
[1965091] PIN_CONFIG2 (0x00A8) = 0x3E0020AA
[1965095] DEVICE_CONFIG (0x00AA) = 0x27100008
[1965100] GD_CONFIG1 (0x00AC) = 0x000200FC Dir= Uni, CSA=0
[1965105] GD_CONFIG2 (0x00AE) = 0x00000000
[1965110] GATE_DRIVER_FAULT_STATUS (0x00E0) = 0x00000000 Fault:
[1965116] CONTROLLER_FAULT_STATUS (0x00E2) = 0x00000000 Fault:
[1965122] SYS_STATUS1 (0x00E4) = 0x01980000 Volt_mag=40.800, Motor_Spd(eHz)=0.000%
[1965130] ALGO_CTRL1 (0x00E6) = 0x00000000
[1965134] DEVICE_CTRL (0x00E8) = 0x00000000
[1965138] SYS_STATUS2 (0x00EA) = 0x60010000 motor_idle State=0x6, Motor_Spd(eHz)=0.000
[1965146] SYS_STATUS3 (0x00EC) = 0x00000000 BUS_Curr=0.000A, BATT_POW=0.000W
[1965153] INPUT_DUTY (0x040C) = 0x00000000 In_duty=0.000%
[1965159] CURRENT_DUTY (0x0512) = 0x00000000 Curr_duty=0.000%
[1965165] SET_DUTY (0x0522) = 0x00000000 Set_duty=0.000%
[1965170] MOTOR_SPEED_PU (0x05CE) = 0x00000000 Motor_Spd=0.000, Max_speed=16000
[1965178] DC_BUS_POWER_PU (0x0714) = 0xEEB54000 Motor_Pwr=270.187, Max_power=1000

0 Joshua Horlander Cruz over 2 years ago in reply to realman wang

TI__Mastermind 24860 points

Hi Realman,

I will aim to get back to you by next Thursday at the latest,

Regards,

Joshua

0 realman wang over 2 years ago in reply to Joshua Horlander Cruz

Prodigy 20 points

Any news?

0 Joshua Horlander Cruz over 2 years ago in reply to realman wang

TI__Mastermind 24860 points

Hi Realman,

I am still looking into this issue. Thank you for your patience.

Regards,

Joshua

0 realman wang over 2 years ago in reply to Joshua Horlander Cruz

Prodigy 20 points

It's been two weeks, any solutions?

0 Joshua Horlander Cruz over 1 year ago in reply to realman wang

TI__Mastermind 24860 points

Hi Realman,

realman wang said:
We try to use IPD to startup, the motor shakes for 1~2 seconds and then 0xE2 reports 0xA0000000: IPD frequency fault.

Please try adjusting the IPD current limit alongside the IPD frequency. If the motor inductance is too high for the IPD current limit or frequency or if the IPD frequency is to high for the current limit this could lead to a IPD frequency fault. Please see section 7.3.20.12 of the datasheet for more information.

realman wang said:
4. 0xEC current is always 0xffff, battery power is wrong value

realman wang said:
2. 0x417 seems be a negative value and it keeps 0x80000000 if duty >40%

I assume you meant to refer to register 0x714? Please see the latest recommendation in this post: https://e2e.ti.com/support/motor-drivers-group/motor-drivers/f/motor-drivers-forum/1276831/mct8329evm-why-are-the-values-of-current-and-power-weird.

realman wang said:
We found the deceleration to be very slow.

To increase deceleration please increase the CL_DEC value if CL_DEC_CONIF is set to 0b otherwise the closed loop deceleration rate is determined by the value in CL_ACC.

For the short circuit issues you are seeing, please try increasing the deadtime insertion by adjusting the DIG_DEAD_TIME register. Please see section 7.3.2.1 of the datasheet for more information.

If this does not help please capture GHx, GLx, and SHx and see if cross conduction is occurring.

Regards,

Joshua

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MCT8329EVM: I2C registers show wrong values