Motor Control ICs Forum Discussions

I am designing BLDC controller for Air cooler application using IMC101T-T038, the motor performance during startup is not consistent the motor starts smoothly at times but sometimes during the startup, when the issue is observed the motor is stationary at a position for few seconds and then starts rotating slowly with making high noise.

Attaching the MCE Wizard file for reference.

Please suggest any solution.     @Krupashankar @Sahil_K @LinGuohui 

Hello,

I am using IMI111T-046 to control a motor. I have also writen a script that runs on IMI111T that performs current filtering, a simple low pass filter that then populates a global variable with filtered current value. All of configuration and programming was done using iMotion Solution Designer.

My question is, how can I access this variable via user UART from a master microcontroller? What is the FB ID and Register ID where this variable is available? 

Regards,

Jure 

Thank for your precise and fast response"PFC Control Registers in iSD Script Editor ".

for the second question: I wrote "GPIO21 == 0" in MCEWizard and rewrite it "FB_GPIO.GPIO_Status.GPIO21 == 1" in iSD. and I also wrote " GPIO19_OUT = 0" in MCEWizard and rewrite it "CLEAR_BIT(FB_GPIO.GPIO_Set,9) in iSD. was the transformation correct? if not please correct me. sincerely.

Hi

i used MCE Wizard (script coding) before and the PFC registers, for example PFC_ACPOWER. Now im using iSD and i want to transfer the old script to it, but the challange is that I dont know how to define PFC registers. 

i read the " How to Migrate from MCEWizard / MCEDesigner to iMOTION™ Solution Designer"
but in this document the PFC registers are not introduced. please let me know if there is document that could help me to redefine the registers? 

for the moment in in need to know what to define PFC_ACPOWER. could you tell me how to define it without error in iSD Script Editor?

Hello,

I understand that the iMotion product line includes the iMotion link, which allows users to program and debug boards for development purposes.

However, I have moved on to the production step of our product, and was looking for a way to program firmware and software onto multiple iMotion chips at once, as using the iMotion link to program one chip at a time feels inefficient. What steps could I take from here to more efficiently mass program iMotion chips? Is there a product I could use, or a certain method?

Thank you,

Alex

Hello, I am designing a circuit to control a brushless motor of 311VDC / 2A @ 15000rpm. I have decided to use the IMC302A-F064  controller, currently without utilizing the FP stage, along with the IGCM10F60GA  IPM model. However, I have a single question. In the evaluation modules you offer, I haven't seen any type of protection against reverse voltages that the BLDC motor might generate in the event of disconnecting the 220VAC power supply while the motor is still rotating. Therefore, I thought it would be a good idea to implement a basic protection in my design. I would like to know if you could review my final design that I'm presenting belo

There are some stages that raise doubts for me. For example, is the protection circuit with the MOSFET necessary? Are the connections for voltage measurement on the ITRIP pin correct? Are the RC filters really necessary? I included them based on your design, but I'm not entirely convinced of their necessity. Should I keep them?

I would be very grateful if you could review my design and let me know if there are any errors, in addition to addressing the questions mentioned above.

Note: DC_BUS = 290V - 311VDC

Regards.

我想使用这个评估版，于是我看了EVAL_IMD700A_FOC_3SH 18 V brushless DC motor drive board，但是有点疑惑，如下两个图片

第一个图片是在文档的第49页，表格里显示RS1、RS2、RS3三个采样电阻阻值为100毫欧，但是第二张图片的原理图里又显示他是10毫欧，所以真确配置是10毫欧吗？

还有就是为什么有的选项在UI(BPA Motor Control Workbench)中是不可以选择的，但是文档的表格里显示配置为Active FW，这该怎么办？就是下图中的PWM freewheeling mode，左边是表格，右边是UI配置界面。

我想使用这个评估版，使用UI配置开发板，但是栅极驱动的参数看不明白，UI中虽然给了提示，但是还是看不明白，有没有正确的配置或者更加详细的资料去参考配置这个开发板？

Hi everyone,

      kindly clarify my doubts in imc101t-f048 controller.

1) Based on the current sensing range single shunt and leg shunt will differ? why I am asking this I have a custom board with a leg shunt configuration. when I put "REF-Vacuum-C101-2ED" s  current sensing values 

R8=220k,R6=22k, R8//R6=>R19=20K, shunt resistor 2mohm,offset =300mv, gain=10, motor 1 current input scaling=20mv/A current sensing range is -15A to 150A,   I got a gate kill error.

Then I adjust these values R8=22k,R6=22k, R8//R6=>R19=11K, shunt resistor 2mohm,offset =1.65v, gain=5.5, motor 1 current input scaling=11mv/A current sensing range is -150A to 150A then its works fine.

i) my doubt is if we use leg shunt method then the offset should be VDD/2 or not ?

ii) leg shunt method current sensing range both -ve and +ve  current sensing should be  same or not? in this scenario adc range only 0 to 1.65v , how can i increase my sensing range to 0 to 3v (offset 300mv) .

iii) how -ve current is injected in motor and how its measured because all lower switch is opened, there is current flow in the shunt then how its measured

     thanks in advance