- All
- Product Name
- Product Keyword
- Product Model
- Product Summary
- Product Description
- Multi Field Search
Views: 623 Author: Site Editor Publish Time: 2023-10-24 Origin: Site
1.1 Product Features
Name: DS-S015M-C 15kg metal tooth standard digital steering gear
Item | Specification |
Operating Voltage | 6.0-7.4V DC |
No Load Speed | ≤0.18sec./60°at 6.0V |
≤0.15sec./60°at 7.4V | |
Stall Current | ≤4.5A at 6.0V |
≤5.2A at 7.4V | |
Stall Torque(static) | ≤20.0kgf.cm at 6.0V |
≥25.0kgf.cm at 6.0V | |
Pulse Width Range | 500 ~ 2500us |
Operating Travel Angle | 180° 土 10° |
Mechanical Limit Angle | 210° |
Weight | 58g |
Case Material | PA66+30%纤 |
Gear Set Material | Metal gear |
Motor Type | Core motor |
Note: The unit of torque is kgf.cm and the unit of speed is sec/60°.
1.2 Structural Dimensions
Figure1 Dimensions of the steering gear
1.3 Electrical Connection
1.3.1 Pin Definition
Figure 2 Steering gear pin drawing
1. Brown -GND ground cable
2, red -VCC power cord
3, orange -PWM control line
1.3.2 Control logic
PWM control technology has become the most widely used control mode of power electronics technology with its advantages of simple control, flexibility and good dynamic response. PWM control technology is the technology of modulating the width of the pulse, that is, by modulating the width of a series of pulses, the required waveform (including shape and amplitude) can be obtained equivalent.
Electrical Schematic Diagram：
FIG. 3 Schematic diagram of steering gear circuit
Control signal parameter：
Signal Period： 20000us
Pulse Width： 500μs-2500μs
Signal high voltage： 3V-3.3V
Signallow voltage： 0.0V-0.45V
Figure 4 Control signal diagram
PWM actuator control generally requires a time base pulse of about 20ms, the high level part of the pulse is generally 0.5ms-2.5ms, the Angle control pulse part in the range, the total interval is 2ms, the Angle control relationship is shown in Figure 2.5.
Figure 5 Angle control relationship diagram
1.4 Usage Instructions
1.4.1 Cable Connection Procedure
1, the steering gear interface 1 is connected to the blue debugging board A position (according to the circuit diagram to distinguish the pin and positive and negative electrode), if there are more than one steering gear can be connected to other positions A;
2. Connect interface 2 to the position of blue debug board B, as shown in Figure a;
3. Adjust the TTL/485 end of the USB-serial port adapter to the TTL end and connect to the PC end (the PWM steering gear adapter with built-in PWM and TTL protocols will automatically identify the PWM protocol for communication, otherwise, please use a special PWM test stand for steering gear debugging. The debugging board cannot be powered by the computer and the power supply at the same time. Remove the red power cable of port 2 before powering on the power supply.
4. After the power port is connected, the Servo Control V1.0.0.3 steering gear test platform is opened, as shown in Figure b.
1.4.2 Procedure
1. Open desheng Servo Control V1.0.0.3 steering gear test platform after wiring is completed.
Select the corresponding window of the steering gear in the port list, set the baud rate (enter the product target baud rate in the other Baud rate values, the default value is 115200), click to open the port and set parameters to control the steering gear.
3. Open the port and click Read. If read/write fails, check whether the wiring steps are correct or whether the port list is selected correctly. If you want to view the current parameters of different servos, select the port list corresponding to different servos and read it again.
4. Set other parameters of the steering gear according to the characteristics of the steering gear. After parameter setting, click Write. If the writing succeeds, the parameter setting fails.
5. After the parameter setting is complete, click the steering gear to restart, set the signal period according to the PWM signal parameters (default is 20000us), adjust the signal pulse width and click Send to control the steering gear to adjust the Angle position. At 180° For example, when the PWM signal pulse width changes from 1500us to 500us, the steering gear changes from 90° Position turn 90° counterclockwise; When the PWM signal changes from 1500us to 2500us, the steering gear changes from 90° The position is rotated clockwise by 90° The Angle. Wait for all tests to complete and click Close port.
1.5 Common Faults
1.5.1 Faults
Undesirable phenomenon | Possible cause |
non-function | The signal line is damaged, the motor is disconnected, the chip is false welded, the program is not burned or burned incorrectly |
Slow reaction, severe fever | Motor overcurrent, replace the steering motor |
Turn in one direction and get stuck | The positive and negative terminals of the motor or potentiometer are connected incorrectly |
Heavy hand feel | Gear assembly is not smooth, bottom cover pressed to PCBA, short circuit damage inside the motor, excessive grease |
Steering gear jitter | Gear assembly is not smooth, potentiometer damage, program problems |
Loud noise | Gear less oil, stuck teeth, skipping teeth, teeth damage |
Large current | The line sequence or motor line is reversed, the gear is stuck, the bottom cover is short with PCBA, and the tooth box is tight, resulting in the parameter mismatch and can not go to the target position |
Steering engine won't return to center | Potentiometer damaged or poor incoming material, potentiometer and output tooth connection is large, output tooth and customer rocker arm or connecting rod is large or stuck |
Torque deviation is large | There is deviation between selection and specification requirements, and the gear is overheated and worn for a long time |
Large angular deviation | Potentiometer damage or poor incoming material, potentiometer and output tooth connection virtual position is large, the control signal does not meet the specification requirements |
1.5.2 Frequently Asked Questions
Question 1: The steering gear is fixed on the product, and the positioning deviation is large with the housing?
Answer 1: The steering gear assembly is positioned at the center of the output tooth circle, and the ear holes on both sides are fixed as far as possible.
Question 2: The plastic gear of the steering machine is not impact resistant, easy to skip teeth?
Answer 2: It is necessary to consider the steering gear of the clutch tooth to apply, to avoid the external impact of the product is greater than the blocked torque.
Question 3: The output teeth of the steering gear are damaged by external impact, and the output teeth are not strong enough?
Answer 3: Try to use the steering wheel and product structural parts to support the external impact, to avoid the small output teeth to bear its impact greater than the steering gear torque.
1.5.3 Precautions
1, please use within the range of working voltage and current, do not overvoltage or overcurrent, so as to avoid burning out or internal damage to the steering gear.
2, please strictly follow the wiring procedure before wiring, so as not to have no function or can not work normally.
3, the use of large torque steering gear must be careful to prevent personal injury caused by misoperation.
4, remember not to add a new steering gear to the bus when the steering gear is working.
5, this product is a high-precision product, do not manually turn the steering wheel or swing arm, so as to avoid internal damage.
6, PWM steering gear installation before the power to confirm the back and then install the steering gear, so as to avoid the wrong Angle position of the steering gear after installation.
7, do not run the steering gear under ultra-high load, try to choose the appropriate running torque.
