UM1970 STMICROELECTRONICS | Alldatasheet
Document overview
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Technical content
Datasheet sections
- 1 System overview
- 1.1 Main characteristics
- 1.2 Target application
- 2 Getting started
- 2.1 System architecture
- 2.2 Building the system
- 2.2.1 Hardware settings
- 2.2.2 Motor control connector pinout
- 2.2.3 DAC settings for debug
- 2.2.4 User LED
- 4 Schematic diagram
- 5 Bill of materials
- 6 Revision history
Getting started with the X-NUCLEO-IHM09M1 motor control connector expansion board for STM32 Nucleo Introduction The X-NUCLEO-IHM09M1 is a motor control connector expansion board for STM32 Nucleo. It provides an easy way to evaluate motor control solutions for three-phase motors by adapting the STM32 Nucleo board with an external ST motor control power board, thanks to ST morpho and motor control connector. The 34-pin motor control connector is compatible with all major ST motor control power boards, requiring an external digital section (MCU) to drive a three-phase motor. The DAC connector supports user code development and testing with easy access to the MCU peripherals. An LED is available for fault condition signaling or status indication. This document describes the procedure for configuring this STM32 NUCLEO expansion board to operate with the STM32 Nucleo board and run a voltage 3-phase brushless motor. The board is fully compatible with the ST Six-Step and FOC (field oriented control) firmware library. Figure 1: X-NUCLEO-IHM09M1 motor control connector expansion board
1 System overview
1.1 Main characteristics
The information listed below shows the board specification data and the main parameters set for the X-NUCLEO-IHM09M1 expansion board for STM32 Nucleo: ST motor control connector (34 pins) compatible with major ST motor control power boards STM32 Nucleo support, thanks to ST morpho connectors Compatible with six-step and FOC motor control firmware library by ST Debug connector for DAC, GPIOs, etc. Fully populated board conception with test points LED for fault signaling or status indication Potentiometer available (i.e. for speed reference) PCB type and size: PCB material - FR-4 layout - double layer copper thickness - 35 μm overall board dimensions - 70 mm x70 mm RoHS compliant
1.2 Target application
3-phase motor driver
2 Getting started
2.1 System architecture
A generic motor control system can be broken down into the following three major blocks: 1. Control block - accepts user commands and provides motor control signals to drive a motor. The X-NUCLEO-IHM09M1 adapter connects an STM32 Nucleo board with a power board requiring an external digital section. 2. Power block - is normally in a 3-phase inverter topology and contains all the necessary active power and analog components to perform low voltage PMSM/BLDC motor control. 3. Motor - 3 phase brushless motor. Figure 2: System architecture
2.2 Building the system
The X-NUCLEO-IHM09M1 adapts the STM32 Nucleo to ST motor control power boards requiring an external digital section to perform three-phase PMSM/BLDC motor control. For regular board operation, it must be plugged on top of an STM32 Nucleo board (control block) via the ST morpho connector as shown below.
Figure 3: X-NUCLEO-IHM09M1 plugged on STM32 Nucleo The interconnection between the STM32 Nucleo board and the X-NUCLEO-IHM09M1 expansion board is designed for full compatibility with a wide range of STM32 Nucleo boards, with no solder bridge modification required. The stacked solution is ready to operate in connection with a power board compatible with a standard 34-pin flat cable.
2.2.1 Hardware settings
D1 – LED for fault or status indication Table 1: Connectors Part name Function J7 34-pin motor control connector J1 DAC/GPIO output CN7 ST morpho connector CN6 Arduino UNO R3 Connector CN8 Arduino UNO R3 Connector CN10 ST morpho connector CN5 Arduino UNO R3 Connector CN9 Arduino UNO R3 Connector D1 LED
Figure 4: X-NUCLEO-IHM09M1 – top layer with silk-screen The X-NUCLEO-IHM09M1 is equipped with ST morpho connectors - male pin headers (CN7 and CN10), which can be used to connect expansion boards to the STM32 Nucleo board. All signals and power pins of the MCU are available on the STMicroelectronics morpho connector. For further details please refer to user manual UM1724, section 5.12 - STMicroelectronics morpho connector available on website www.st.com. Table 2: ST morpho connector – CN7 Pin Default Signal Solder Bridge Notes
1 PC10 NTC bypass R17
2 PC11 Dissipative Brake/OCP disable R19
3 PC12
4 PD2
5 VDD
6 E5V
7 BOOT0
Pin Default Signal Solder Bridge Notes
8 GND
9 NC/PF6
11 NC/PF7
12 IOREF
13 PA13
14 RESET
15 PA14
17 PA15 Encoder A/ Hall H1 R27
19 GND
20 GND
21 PB7
22 GND
23 PC13
24 VIN
25 PC14
27 PC15
28 PA0 Curr_fdbk_PhA R4
29 PH0/PF0/PD0
30 PA1 VBUS_sensing R5
31 PH1/PF1/PD1
32 PA4 DAC_Ch R18 N.M.
33 VLCD/VBAT
34 PB0 VL_PWM R15
35 PC2 Temperature feedback R10
36 PC1 or PB9 Curr_fdbk_PhB R9
9: Solder bridges for further details
37 PC3 Potentiometer R28
38 PC0 or PB8 Curr_fdbk_PhC R7
9: Solder bridges for further details
Table 3: ST morpho connector – CN10 Pin Default Signal Solder Bridge Notes
1 PC9
2 PC8
3 PB8
4 PC6
5 PB9
6 PC5
7 AVDD
8 U5V
9 GND
11 PA5 GPIO/DAC/PWM R21
only: pin PA5 is on CN10/pin 30 and PB13 is on CN10/pin 11
12 PA12
13 PA6 DIAG/ENABLE/BKIN1 R3
only: pin PA6 is on CN10/pin 28 and PB14 is on CN10/pin 13
14 PA11 DIAG/ENABLE/BKIN2 R1
15 PA7 UL_PWM R12
only: pin PA7 is on CN10/pin 26 and PB15 is on CN10/pin 13
16 PB12
17 PB6
18 PB11/NC
19 PC7
21 PA9 VH_PWM R8
22 PB2 LED RED R14
23 PA8 UH_PWM R6
24 PB1 WL_PWM R16
25 PB10 Encoder Z/ Hall H3 R25
26 PB15
only: pin PA7 is on CN10/pin 26 and PB15 is on CN10/pin 13
27 PB4 PWM/DEBUG R20
Pin Default Signal Solder Bridge Notes
28 PB14 DIAG/ENABLE/BKIN1 R2
only: pin PA6 is on CN10/pin 28 and PB14 is on CN10/pin 13
29 PB5 GPIO/DAC/PWM R23
30 PB13 GPIO/DAC/PWM R22
only: pin PA5 is on CN10/pin 30 and PB13 is on CN10/pin 11
31 PB3 Encoder B/ Hall H2 R24
32 AGND
33 PA10 WH_PWM R11
34 PC4
35 PA2
36 NC/PF5
37 PA3
38 NC/PF4
2.2.2 Motor control connector pinout
Figure 5: Motor control connector J7 (top view) The X-NUCLEO-IHM09M1 expansion board supports motor control via the J7 34-pin connector, which provides all the required control and feedback signals to and from an ST motor power-drive board. The signals available on this connector include emergency stop, speed or position feedback, three-phase motor current, bus voltage sensor and heatsink temperature sensor from the motor.
Table 4: ST motor control connector J7 pin assignments Pin Default Function
1 PA6/PA11 DIAG/ENABLE/BKIN1
2 GND Dissipative brake/OCP disable
3 PA8 UH_PWM
4 GND
5 PA7/PB15 UL_PWM
6 GND
7 PA9 VH_PWM
9 PB0 VL_PWM
10 GND
11 PA10 WH_PWM
12 GND
13 PB1 WL_PWM
14 PA1 VBUS_sensing
15 PA0 Curr_fdbk_PhA
16 N.C.
17 PC1 Curr_fdbk_PhB
18 N.C.
19 PC0 Curr_fdbk_PhC
20 N.C.
21 PC10 NTC bypass
22 N.C.
23 PC11 Dissipative brake/OCP disable
24 N.C.
25 E5V
26 PC2 Temperature feedback
27 N.C. 28 3V3 29 N.C. 30 N.C.
31 PA15 Encoder A/ Hall H1
32 N.C.
33 PB3 Encoder B/ Hall H2
34 PB10 Encoder Z/ Hall H3
2.2.3 DAC settings for debug
For debugging purposes, it is possible to use the DAC peripheral and configure the motor control library in order to drive the signal. For instance, the PA4 pin is accessible through the ST morpho connector or J1 connector and it is typically connected to DAC_CH1. Other pins are available at the J1 connector according to the STM32 Nucleo board used.
2.2.4 User LED
The X-NUCLEO-IHM09M1 provides a programmable LED (D1) connected on pin PB2. It can be used to signal motor status, faults, etc. This pin must be configured at the user level and driven by the application code written by the user.
MC FOC SDK – Configuration guide for X-NUCLEO-IHM09M1 UM1970
3 MC FOC SDK – Configuration guide for
The X-NUCLEO-IHM09M1 expansion board for the STM32 Nucleo is compatible with the motor control (MC) FOC SDK (firmware library and Workbench software graphical user interface), and no hardware modification is needed to run the motor with this control algorithm. During MC FOC SDK pin configuration, please adhere to the indications in Table 2: ST morpho connector – CN7 and Table 3: ST morpho connector – CN10. Connection of the STM32 Nucleo board with the MC Workbench software graphical user interface (GUI) is possible through a virtual COM embedded in the STM32 Nucleo board that allows the use of the USART2 on PA2 and PA3 pins directly from the same USB type A to Mini-B USB cable used for STM32 Nucleo programming. For further information regarding MC FOC SDK, please consult the STSW -STM32100 documents on the ST website: www.st.com.
4 Schematic diagram
Figure 6: X-NUCLEO-IHM09M1 schematic: PWM Figure 7: X-NUCLEO-IHM09M1 schematic: Hall/encoder sensor Figure 8: X-NUCLEO-IHM09M1 schematic: currents Figure 9: X-NUCLEO-IHM09M1 schematic: DAC
Figure 12: X-NUCLEO-IHM09M1 schematic: Arduino UNO R3/ST morpho connector
5 Bill of materials
Table 5: BOM part I Item Qty Ref. Part / value Voltage / Watt / Ampere Type / technology 1 1 D1 red LED standard - SMD 2 1 J1 Stripline m. 1x3 3-way strip line- male 2.54 mm 3 1 J2 ring test point 1 mm 4 2 CN7,CN10 CONN 38 elevated socket ST morpho connector 38 pin (19x2) 5 2 CN6,CN9 CONN8 8 pin elevated socket 6 1 CN5 CONN10 10 pin elevated socket 7 1 J7 motor control connector 34 way IDC straight boxed header 8 1 CN8 CONN6 6 pin elevated socket 9 26 R1,R2,R3,R4,R5,R 6,R7,R8,R9,R10,R1 1,R12,R13,R15,R16 ,R17,R18,R19,R20, R21,R22,R23,R24, R25,R27,R28 0 Ω 0.1 W SMD resistor 10 1 R14 510 Ω 0.1 W SMD resistor 11 1 R26 100 kΩ ½ W trimmer resistor
Table 6: BOM part II Item Tol. Package Manuf. Manuf. order code / order p/n Notes
1 SMD 0603 Lite-on LTST-C193KRKT-
2 TH 2.54mm pitch any
3 TH Vero
4 TH 2.54mm pitch Samtec ESQ-119-24-T-D alternative:4UCONN 08413 info: ASSEMBLY ON TOP 5 TH 2.54mm pitch Samtec ESQ-108-24-T-S alternative:4UCONN 15284 Mounting info: Female on top, male on bottom -NOT MOUNTED 6 TH 2.54mm pitch Samtec ESQ-110-24-T-S alternative:4UCONN 15286 Mounting info: Female on top, male on bottom -NOT MOUNTED
7 TH any any
8 TH 2.54mm pitch Samtec ESQ-106-24-T-S Alternative: 4UCONN 15282 Mounting info: Female on top, male on bottom -NOT MOUNTED 9 0603 ANY ANY 10 0603 ANY ANY 11 10% Bourns 3386G-1-104LF
6 Revision history
Table 7: Document revision history Date Version Changes 28-Oct-2015 1 Initial release.