Description
The head unit is a control device for power modules.
To connect, you need to supply power (+12V and GND) and connect the CAN bus (CAN1_H and CAN1_L).
The CAN bus is connected using the “line” topology. Those. the wire goes from one module to another. The star connection is not supported by the CAN standard. On the end modules, the dip switch is set to the “On” position.
Appearance of the device board
The dashes under the inscription “Auger” (location 1) indicate that there is no connection with the auger motor control module.
If there is no connection with the control module of the motor of the plate and vibrator, dashes will appear under the corresponding inscriptions (locations 2 and 3).
Power adjustment, on/off.
The device is turned on by pressing the left encoder.
The left encoder adjusts the duty cycle of the auger. Adjustment is carried out in both positive and negative directions in 10% increments. The right encoder adjusts the duty cycle of the plate motor in 5% increments. Briefly pressing the encoders turns off the corresponding motors. A long press on the left encoder turns off the device.
Button 5 allows you to turn on the vibrator motor for a certain time. Currently the time in the firmware is set to 70 seconds. After this time, the motor will be automatically turned off. While the motor is running, the display shows the time remaining until the motor turns off.
Extended information on power modules
To enable extended information on the module, press button 1.
As an example, the figure shows information on the second module.
Location 1 – indicates the current set duty cycle of the plate motor.
Place 2 – indicates the actual power that the device is trying to supply to the motor. Because If we observe a voltage drop, the device automatically reduces the duty cycle to maintain the specified voltage level on the motor. If the reading differs from the specified duty cycle by more than 2 units, then there are problems and the device lowers the duty cycle. The internal duty cycle in the power module varies in 2% increments, so in some cases there may be a discrepancy in the readings (a difference of 1%) which is not an error or malfunction. The duty cycle of the vibrator motor is not displayed, because it is always either 0% or 100%.
Place 3 – current power consumed by the device. (for a module with two motors this is the total power of the two motors). Because The consumption of the digital part of the module is extremely low, so this power can be considered as the power supplied to the motors.
Place 4 – voltage at the device input. Because a threshold of 10 volts is set – the device indicates that attention should be paid to this parameter – “!”.
Location 5 – board temperature according to temperature sensor readings. If exceeded, “!” will be displayed. The readings of this sensor do not claim to be accurate. Its purpose is to ensure that the device shuts down at high temperatures.
Place 6 – current consumed by the device at the current time.
Engine hours
The operating hours of each engine can be viewed by pressing button 2.
Engine hours are calculated with an accuracy of 10 seconds. Those. recording to non-volatile memory occurs every 10 seconds.
Specifications:
12/24 DC Motor Control System
– Engine speed control, programmable with or without the possibility of reverse;
– Automatic calibration of current sensors:
Current limit: 100% to 10%.
– Ambient temperature: -15°C / +40°C (alarm at temperatures above 80°C);
– Availability of LEDs to monitor system status;
– Switching frequency: 10 kHz;
– Availability of housing;
– Accounting of engine operating hours, recorded in non-volatile memory;
– Ability to set different current limit values;
– The presence of a temperature sensor to protect against overheating;
– Rated load current 10-100 A / Limit current 105 A.
Control via CAN bus. Length up to 40-50 meters
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