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DRV8461SPWPR 数据表(PDF) 60 Page - Texas Instruments |
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DRV8461SPWPR 数据表(HTML) 60 Page - Texas Instruments |
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60 / 117 page  START STALL DETECTION AUTOMATIC LEARNING MANUAL DRVOFF = 0 Spin Motor with desired DIR, STEP nFAULT = 0? SPI READ Fault status YES NO DRVOFF = 0 Spin Motor with desired DIR, STEP STL = 1? NO Stop Motor SPI WRITE CTRL4 = 0xB0 YES, Motor Stalled nFAULT = 1? EN_OUT = 0 Inves gate Fault Condi on NO YES Clear Fault Stall Motor SPI READ DIAG Status 2 STL_LRN_OK = 1? nFAULT = 0? SPI READ Fault status YES NO STL = 1? Other Faults take ac on NO Stop Motor SPI WRITE CTRL4 = 0xB0 YES, Motor Stalled nFAULT = 1? EN_OUT = 0 Inves gate Fault Condi on NO YES Clear Fault SPI WRITE Ini alize Registers 4.5V VM 65V MODE = 1 Wait tWAKE nSLEEP = 1 EN_OUT = 0 SPI WRITE CTRL4 = 0x3C Set Desired VREF EN_OUT =1 Spin Motor with desired DIR, STEP Stall Motor for > 16 Electrical Cycles SPI READ DIAG Status 2 Stop Motor Remove Stall Clear Fault Spin Motor with desired DIR, STEP SPI READ Fault status SPI READ Fault status Stop Motor Clear Fault Stop Motor Clear Fault Other Faults, Take ac on SPI WRITE CTRL5, 6 = STALL_TH CTRL4 = 0x1C Set Desired VREF EN_OUT = 1 Spin Motor with desired DIR, STEP NO YES, Learn Success Re-learn Clear Fault SPI_READ CTRL7 and CTRL8 Registers to get TRQ_COUNT while spinning at the desired speed. Start with a STALL_TH of TRQ_COUNT/2 and ne tune for reliable Stall detec on. Figure 7-43. Stall learning flowchart DRV8461 SLOSE98 – DECEMBER 2022 www.ti.com 60 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: DRV8461 |
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