Overview
This...
Key Features
- Evaluation of the Motor control with the suitable controller board
- Power option up to 48V and 30A main supply current
- MOSFET power stage supporting 3-phase BLDC motors
- Current measurement on 2-phases (3 phase measurement is optional)
- On-board temperature sensor and 1-wire bus connector for additional sensors
- Encoder input capable of receiving both single ended and differential signals
Figure 1: Top view of the PCB.
Block Diagram
Figure 2: Block diagram of the board.
General Safety Instructions
- This product should be operated only by qualified electrical specialist.
- Never leave operating board unattended.
- There is a possible risk of burns due to the hot surfaces while operating the Board. Reason for this may be the high currents in the motor driving outputs.
- All externally connected power sources must be SELV protected (Separated or Safety Extra Low Voltage).
- All wiring and installation should be performed only with all external power sources switched OFF or disconnected.
- No rewiring or mechanical setup changes should be performed while the board is operating.
- The product is rated for indoor dry environment use only.
- The product is intended to be used only in horizontal position on a non-conducting and non-inflammable surface.
- The mechanical setup must ensure that device is firmly fixed in place and prevent accidental or unwanted movement of its parts.
Signals, Interfaces and Pins
Control Board Connections
Figure 3: PCB connectors J8 and J9.
| Signal names | Connector J8 | Connector J9 | Connector J17 |
|---|---|---|---|
Digital Supply to EDPS | Pin 6, 12: +3.3V | Pin 6, 12: +3.3V Pin 5, 11: GND | Pin 5, 6, 21, 22: +3.3V Pin 1, 2, 25, 26: GND |
Motor Driver PWM Signals to EDPS High and Low Side control signals
| Pin 1: G1H - Ch.A HighSide | Pin 11: G1H - Ch.A HighSide | |
| ADC Clock Signal to EDPS | Pin 1: SCLK | Pin 23: SCLK | |
| Encoder Digital Signals from EDPS | Pin 8: ENC_A | Pin 20: ENC_A | |
| Motor Current ADC "raw" Signals from EDPS (usable with FPGA IP) | Pin 2: SDI1 - Current Ch.A | Pin 19: SDI1 - Current Ch.A | |
| Supply Voltage ADC "raw" Signal from EDPS (usable with FPGA IP) | Pin 7: SDIV - from DC_LINK | Pin 24: SDIV - from DC_LINK | |
| 1-Wire bus for temperature measurement | Pin 10: EXT1 - 1-Wire Bus 1 Pin 4: EXT2 - 1-Wire Bus 2 | Pin 4: EXT1 - 1-Wire Bus 1 | |
| Pins not connected | None | None | Pin 13, 14 |
Table 1: Description of the PCB connectors J8 and J9.
Motor and Power Connections
There are two options available for the motor and power concept:
| Detail | Option 1: Reference Motor Board with DC +12V Supply | Option 2: Customer Motor at individual DC +5..48V | Comments |
|---|---|---|---|
| Motor Supply | From DC +12V Input J7 via fuse F3 via Motor Reference Board to J5 of Drive board | From customer DC power supply to J6 via F1 on Drive Boad | |
| Motor Connection | Motor wires connected to cage clamps on Motor Reference Board J5 (A), J4 (B), J3 (C) | Motor wires connected to bolt screw terminals on Drive Board J2 (A), J3 (B), J4 (C) | |
Encoder Connection Single Ended | From encoder pins via 6-pin Pmod to Drive Board J10: Pin 1: GND | From motor to Drive Board to J11 (single/differential): Pin 2: +5V Supply | Jumper Settings for encoder signals.
|
Encoder Connection Differential | J11 differential with 100R terminated: Pin 2: +5V Supply Pin 3: GND Pin 5: ENC A negativ Pin 6: ENC A positiv Pin 7: ENC B negativ Pin 8: ENC B positiv Pin 9: ENC I negativ Pin 10: ENC I positiv |
|
Table 2: Description of the Motor and Power connector.
On-Board Temperature Sensor
There is a on-board 1-Wire temperature sensor DS18S20Z+ from Maxim located in the middle of the PCB for optimal readings.
Addional 1-wire sensor(s) can be connected to the connector J16:
Figure 4: 1-wire sensors connector J16.
- Pin 1(DQ), 3 (GND),5 (+3.3V) at the same 1-wire bus as the onboard one
- Pin 2(DQ), 4 (GND),6 (+3.3V) at a separate 1-wire bus
Power and Power-On Sequence
DC 12V power supply for the Motor and Driver board
The power source must be SELV (Separated or safety extra-low voltage) protected.
The motor drivers and the reference motor on the pre-mounted motor board TEC0060 are supplied by this voltage.
The internal +5V digital supply is generated from this +12V supply.
DC 5...48V power supply for the Motor only
SAFETY INSTRUCTIONS:
External power supply for the motor must be SELV (Separated or safety extra-low voltage) protected.
This option is
- only allowed to be used for electrical specialist for the used electrical voltage and power conditions
- only allowed to be used under electrical laboratory conditions
- only allowed to be used in horizontal position on a non-conducting and non-inflammable surface
- only allowed to be used with a wiring, which fulfills the current rating for the maximum possible currents.
- only allowed to be used with a suitable current limiting circuit
- The maximum continuous current must not exceed 30A.
- The delivered fuse "Littelfuse Tpye 142.5631.5302" must be used as current limiter between connector J5 and J6.
- To limit the current for smaller motor loads an ADDITIONALLY appropriate current limiter can be used e.g. a current limited power source or a fuse integrated in the wiring.
- only allowed to be used with appropriate connectors at the M5 screw connectors, which means M5 cable lugs must be used and fastened according to technical standards.
- only allowed to be used, if the "Drive Boad high current signals" conducting up to 30A nominal, are covered by isolating, mechanically stable, non-inflammable (UL V-1 or better) material
The "Drive Board high current signals" are the motor outputs A, B, C and Fuse F1 Connectors J5 an J6 and further internal connections shown white marked in the following picture:
- It is mandatory to use the delivered isolating cover of the PCB made of plexiglass as a minimum protection. Use holes H1, H9, H3 and H4 with the delivered 10mm spacers when mounting.
Board with isolating transparent plexiglass cover - top view.
Board with isolating cover - side view - The used cable lugs need to be isolated in the area outstanding the outer border of the Drive Board.
Make sure that the "Isolating Cover PCB" is overlapping the conducting material by a minimum of 20 mm.
Initial operation
To use a separate power supply for the motor supply perform the following steps:
- Disconnect the reference motor board TEC0060 by unmounting its screws and the encoder cable from J10
- Mount the delivered 30A fuse to the connectors J5 and J6 with the delivered M5 screws
- For lower supply current requirements, caused by the power rating of the used motor, a fuse with a lower and suitable current rating integrated in the supply wiring is recommended.
- Connect with cable lugs the +DC 5..48V to J6 and the corresponding GND to J1.
- The cable length is limited to 3m.
- Connect the three motor phases to J2 (A), J3 (B) and J4 (C).
- The cable length is limited to 3m.
- Optional: connect the encoder to J10 or J11 and set jumper field according to signal specification: differential or single ended. See section TODO for details.
Power-On Sequence
Any power sequence of the three supply sources is allowed:
- +3V3 Supply from the Control Board, generated by Control Board supply
- +12V and
- optional +5..48V Motor Supply
Reference Motor Board TEC0060
For easy connection of the reference Motor and Encoder to the Driver board a special Motor Adapter Board TEC0060 is included in the EDDP Kit.
Reference Motor
The reference motor is manufactured by Anaheim Automation. The order code for the motor with the encoder already mounted is BLWR111D-24V-10000-1000SI. Please note that the encoder is not available separately. The nominal motor voltage is DC 24V, however, only 12V is supplied by the Reference Motor Board, which results in reduced performance.
The datasheet for the motor can be found at
http://www.anaheimautomation.com/manuals/brushless/L010234%20-%20BLWR11%20Series%20Product%20Sheet.pdf
The datasheet for the encoder can be found at
http://www.anaheimautomation.com/manuals/accessories/L010390%20-%20Single%20Ended%20Encoder%20with%20Index%20Channel.pdf
Technical Specifications
Absolute Maximum Ratings
| Parameter | Min | Max | Units | Notes |
|---|---|---|---|---|
DC +12V supply | 0 | 15 | V | |
| DC +5..48V supply | 0 | 50V | V | |
| DC +3V3 supply | -0.5 | 6 | V | |
| PWM Input | -0.5 | 6 | V | |
| ADC Digital Input | -0.5 | 3.8 | V | DC +3V3 = 3.3V |
| Encoder Input | -10 | 15 | V |
Recommended Operating Conditions
| Parameter | Min | Max | Units | Notes |
|---|---|---|---|---|
DC +12V supply | 11.5 | 12.5 | V | |
| DC +5..48V supply | 5 | 48 | V | |
| DC +3V3 supply | 3.0 | 3.6 | V | |
| PWM Input | 0 | DC +3V3 supply | V | |
| ADC Digital Input | 0 | DC +3V3 supply | V | |
| Encoder Input | -7 | 12 | V |
Electrical characteristics
DC +3V3 supply = 3.3V
| Parameter | Min | Max | Units | Notes |
|---|---|---|---|---|
| PWM Input Logic High Level | 2.2 | V | ||
| PWM Input Logic Low Level | 0.8 | V | ||
| ADC Digital Input Logic High Level | 2.7 | V | ||
| ADC Digital Input Logic Low Level | 0.6 | V | ||
| ADC Digital Output Logic High Level | 3.2 | 3.3 | V | Io=-200μA |
| ADC Digital Output Logic Low Level | 0 | 0.4 | V | Io=+200μA |
| Encoder Input Logic High Level (Differential) | -0.2 | V | ||
| Encoder Input Logic Low Level (Differential) | -0.01 | V | ||
| Encoder Input Logic High Level (Single Ended) | 2 | V | ||
| Encoder Input Logic Low Level (Single Ended) | 0.6 | V |
Physical Dimensions
Board size: 100 mm × 166 mm. Please download the assembly diagram for exact numbers.
PCB thickness: 1.75 mm +/-10%
Highest part on PCB: approximately 17 mm. Please download the step model for exact numbers.
All dimensions are shown in mm. Additional sketches, drawings and schematics can be found TODO: here.
Operating Temperature Ranges
0°C - 70°C, cooling might be required, depending on environment and airflow.
References
All resource links for other relevant documents and websites are available from Trenz EDDP Web Hub:
Revision History
Hardware Revision History
| Date | Revision | Notes | PCN Link | Documentation Link |
|---|---|---|---|---|
| 2017-08-14 | 04 | Initial public revision |
Hardware revision number is printed on the PCB board in the bottom right corner.
Document Change History
Date | Revision | Authors | Description |
|---|---|---|---|
| Antti Lukats, Andrei Errapart | Initial version |
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