[ADIWorld Health Industry Carnival] 1. TMC4671 chip features and board introduction

皓月光兮非自明

[ADIWorld Health Industry Carnival] 1. TMC4671 chip features and board introduction [Copy link]

 

1. TMC4671 chip features and board introduction

TMC4671 Features

Fast control: built-in FOC controller with 25k~100kHz PWM generator

Support modes: torque control, speed control, position control

Supported motors: BLCD, PMSM, stepper motor, brushed motor, voice coil motor

Supported feedback: open loop position generator, digital incremental encoder, dual feedback digital incremental encoder, digital Hall input sensor, analog encoder/analog Hall sensor, multi-turn position counter

Control interface: SPI, UART, Step/Dir control interface

Features of Shijian TMC4671+TMC6100 Board

Maximum input: DC 50V 10A RMS【J1】

Communication interface: CAN [P7], RS485 [P2]

Debug interface: SWD/TT [J2] L, RTMI [J3]

Motor interface: BLCD [P1], PMSM [P1]

Limit interface: limit switch [J5]

Feedback interface: incremental encoder [J4], Hall signal [J6], analog encoder [J7]

Control interface: SD card program control [J8], external PWM control [J8]

Figure 1 TMCL-IDE page

The rated current of the motor we use is 4A. It is preferred to set the relevant registers in the current limit configuration to prevent the coil from being damaged during the configuration.

Figure 2 TMC4671 data sheet P96~P97

By querying the TMC4671 register manual, we can see that in the Limits group of TMC4671, according to the motor adjustment parameters, this time a 24V100W brushless motor is used, and the input uses an adjustable power input DC 24V 3.5A, so the voltage output ratio (0x5D) is set to 100%, that is, 16bit (0xFFFF) = 32767. The maximum current is set to 4A.

Table 1 Registers used by Limits in TMCL-IDE

Reg.	Bit	Range	Desc.	Val.
0x5D	s16(15:0)	-32768~32767	Voltage output ratio	32767
0x5E	u16(15:0)	0~65535	Max. Current	4000
0x5F	u16(15:0)	0~65535	Max. acceleration	3000
0x60	u32(31:0)	0~65535	Max.Speed	3000
0x61	s32(31:0)	-2147483647~2147483647	Lower limit	-2147483647
0x62	s32(31:0)	-2147483647~2147483647	upper limit	2147483647

Jacktang

The rated current of the motor we use is 4A

The maximum current is set to 4A

Reminder: the rated current is not the maximum current.

秦天qintian0303

This board is a third-party customized version, which is equivalent to refining the functions of the official board. In fact, it is mainly used to control three-phase motors.

皓月光兮非自明

Qintianqintian0303 posted on 2024-3-17 19:58 This board is a third-party customized model, which is equivalent to refining the functions of the official board. In fact, it is mainly for the control of three-phase motors

Yes, there is no interface for stepper motor or DC motor, so I didn't prepare three-phase motor, and I started to try it a week later.