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Hailing Magnetic Powder Brake >> Complete Dynamometer System >> TR2B Torque and Speed Collector

Complete dynamometer system

Magnetic powder brake

Magnetic powder clutch

Tension control system

Photoelectric correction system

Magnetic particle

TR2B Torque and Speed Collector

The TR-2B torque and speed collector uses magnetic powder brake or magnetic powder clutch as a damping load, and uses tension and pressure sensors, photoelectric (or magnetoelectric) speed sensors as detection elements, and can collect torque, speed and power of power machinery. The instrument displays the acquisition results with a digital tube and is equipped with an RS232 (or custom half-duplex RS485) standard serial interface to implement communication with a computer or interface with a micro printer.

1. Technical indicators

1. Torque collection range: 0 ~ 50000Nm (determined by the range of the tension and pressure sensor)
2. Speed collection range: 0.5 ~ 20000r / min.
3. Torque collection error: less than 0.1%
4. Speed collection error: less than 0.1%.
5. Sampling cycle: 0.1 ~ 1 second
6. Power consumption: less than 10w

Panel introduction


The front panel is equipped with three parameters: "Parameter", "+" and "-". The "Parameter" button is used to select the parameters required by the system and the storage of parameters;

Third, the working principle

The torque of the power is equal to the length of the force arm times the force on the force sensor;
The speed of the power corresponds to the number of pulses output by the speed sensor.


Fourth, the system settings

The system needs to set the following parameters:

1. Torque range 2. Speed sensor teeth 3. Sampling period 4. Serial communication address 5. Serial communication selection 6. Timing print switch 7. Timing print time
The "Parameter" key is a multi-function key for setting 7 system parameters.
When the instrument is powered on, two frames of information are displayed, the first frame is the factory number; the second frame is the parameter value: "torque range", "speed sensor teeth", "serial port communication address", used to check whether the parameters are correct.
Press the "Parameter" key once, the system enters the parameter setting state. At this time, F1 is displayed in the power display window. Press the "Parameter" key again to display F2, which is displayed until F7, F1 ~ F7 correspond to the above 7 parameters. When F7 is displayed, if you press the “Parameter” key again, at this time, “——————” is displayed in the power display window, the system stores the above 7 parameters (not lost after power failure), and then automatically returns to work status.

Specific instructions:

(1) Torque range F1
Used to set the range of the torque. This value is the range of the torque sensor.
Press the "Parameter" key once to display F1. Use the "+" and "-" keys to change the setting value. The values are 1, 2, 5 ... 10000, 20000, 50000.

(2) Number of teeth of speed sensor F2
It is used to set the number of teeth of the speed sensor (the number of teeth is in the range of 1 ~ 5000). Use the “+” and “-” keys to change the set value.

(3) Sampling period F3
It is used to set the sampling period of the system (range: 0.1 ~ 1). Use the “+” and “-” keys to change the set value.

(4) Serial communication address F4
It is used to set the communication address of this machine. Use the “+” and “-” keys to change the setting. The range is 0-20. When not communicating with the computer, this parameter may not be set.

(5) Select F5 for serial communication
The communication port of the instrument is a multi-function port, which can interface with a computer or a micro printer.
In F5 state, use the "up" or "down" key to operate. There are two states: "Con" and "Pri".
"Con": communication with the computer; "Pri": interface with the printer.

(6) Timing print switch F6
In F6 state, use the "up" or "down" key to operate. There are two states of "on" and "OFF".

(7) Timing print time F7
In the F7 state, use the "Up" or "Down" keys to change the timing printing time.
Time printing interval (unit: second): display value × sampling period;

Five, sensor connection

(1) The signal wires of the force sensor are connected as follows:
Terminal 1: Shielded Terminal 2: 0V Terminal 3: Signal 1 Terminal 4: Signal 2 Terminal 5: + 5V

(2) The signal wires of the speed sensor are connected as follows:
Terminal 6: 0v Terminal 7: Signal terminal 8: + 12v

Calibration of torque


1. Connect the pull pressure sensor.
2. Install the torque calibration rod. The calibration rod is placed on the same side or the other side of the force sensor.
3. Turn off the power, press and hold the "Parameter" key, and then turn on the power to enter the "zero, full scale" debugging state, and the power display window displays "SEP";
4. Torque zero adjustment: without weight, when the displayed value of the torque display window is stable, press the "+" key, the power display window displays "SEP 0", and the instrument automatically records the "zero point" of the torque;
5. Torque full scale adjustment: Hang a standard weight on the calibration rod, so that the torque generated by the weight is the selected torque range value. When the displayed value in the torque display window is stable, press the "-" key, the power The display window displays “SEP 1”, and the instrument automatically records the “full scale” of the torque;
6. Step 4 and Step 5 are not sequential, but they must be operated simultaneously.
7. Remove the weight and torque calibration lever.

note:

1. During the torque calibration, the displayed value of the torque window is "relative torque value", and the range is: -10000 ~ 10000. If the "relative torque value" does not change with the change of external force during calibration, please check whether the sensor is disconnected and whether the sensor is damaged.
2. If the “zero” is calibrated, the relative torque value is “-E” or “E”, please check whether the sensor is disconnected; if the connection is correct, replace the force sensor. Move too big.
3. If the relative torque value is "-E" or "E" when calibrating at "full scale", please replace the force sensor. The possible reasons are:
(1) The sensor range is too small;
(2) The zero offset of the sensor is too large.

Connection of peripherals

The instrument provides an RS232 serial interface to communicate with a computer. The serial communication cable is connected as follows:

Eight, micro printer interface

The instrument is connected to the printer through an RS232 (or RS485) serial interface and outputs ASCII code.
Serial port communication format: Baud rate is 9600, no parity bit.
Printing style: 0.00000Nm 0.0000r / min 0.0000kW

Nine, micro printer interface

The instrument is connected to the printer through an RS232 (or RS485) serial interface and outputs ASCII code.
Serial port communication format: Baud rate is 9600, no parity bit.
Printing style: 0.00000Nm 0.0000r / min 0.0000kW

Ten, matters needing attention

(1) Set the "torque range F1" and "sensor tooth number F2" correctly, otherwise the acquisition result will be wrong.
(2) The positive or negative torque value indicates the rotation direction of the power.
(3) When "E" or "-E" is displayed in the display window, it means that the collected value is beyond the display range.
(4) In the “test state”, the “+” key is used for the compensation of “torque zero”. When the zero point is offset by zero, press "+" to correct the "torque zero point".
(5) In the "test status":
(A) When "Computer Communication" is selected, the "-" key is used to keep the measured value unchanged, which is convenient for recording. When on hold, the power indicator flashes. Press the "-" key again to exit the hold state;
(B) When “Micro Printer” is selected, the power indicator pulses flashing, and the “-” key is used for manual printing.

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