TR-1C Torque measuring instrumentDetailed product description：

The TR-1C torque and speed measuring instrument uses a magneto electric phase difference torque sensor as the detection element, which can collect the torque, speed, and power of transmission machinery. The instrument displays the acquisition results on a digital tube and is equipped with an RS232 (or customized half duplex RS485) standard serial interface for communication with a computer. This instrument is an upgraded product of TR-1B torque and speed acquisition instrument.

1、 Technical specifications of TR-1C torque measuring instrument
1. Sampling period: 0.1 seconds, 1 second, 2 seconds, 4 seconds.
2. Torque collection range: 0~50000Nm
3. Range of speed acquisition (120 teeth for torque sensor and 60 teeth for external speed sensor):
Sampling period of 0.1 seconds:
① Torque sensor speed measurement: The collection range is 14~50000r/min.
② External speed sensor speed measurement: The collection range is 28~10000r/min.
Sampling period is 1 second:
① Torque sensor speed measurement: The collection range is 3.5~27000r/min.
② External speed sensor speed measurement: The collection range is 7~10000r/min.
The sampling period is 2 seconds:
① Torque sensor speed measurement: The collection range is 2.3~12000r/min.
② External speed sensor speed measurement: The collection range is 4.6~10000r/min.
The sampling period is 4 seconds:
① Torque sensor speed measurement: The collection range is 1.2~6000r/min.
② External speed sensor speed measurement: The collection range is 2.3~10000r/min.
4. Torque collection error: less than 0.1%
5. Speed acquisition error: less than 0.1%
6. Torque and speed analog output error: less than 0.5%
7. Torque signal amplitude: not less than 0.2V, not greater than 20V effective value
8. External speed signal amplitude: greater than 4V (pulse amplitude)
9. Input impedance of torque acquisition circuit: 10K
10. Input impedance of external speed acquisition circuit: 10K
11. Power consumption: less than 10w
12. Automatically identify and display positive and negative torque
2、 Introduction to front and rear panels
The front panel is equipped with three buttons: "Parameters", "Up", and "Down" to enable human-machine dialogue. Four light-emitting tubes, namely "Signal 1", "Signal 2", "Signal 3", and "External Speed", are configured to indicate the working status of the instrument. The "Signal 1", "Signal 2", and "Signal 3" lights indicate whether the corresponding signals have been input; The "external speed" light indicates the source of the speed measurement signal.
3、 System settings
The system needs to set the following parameters:
1. Torque range 2. Speed range 3. Sensor coefficient 4. Speed input selection 5. Number of teeth of torque sensor 6 Number of teeth of external speed sensor 7. Sampling period 8 Serial communication address 9 Torque reset to 10 Speed reset to zero
The "Parameters" key is a multifunctional key used to set 10 system parameters. The "up" button is used for torque zeroing and modifying system parameters; The 'down' button is used for speed zeroing and modifying system parameters.
When the instrument is powered on, two frames of information are displayed: the first frame shows the instrument model (tr-1c) and the instrument factory number (such as 5801); The second frame displays "torque range", "sensor coefficient", and "serial communication address" to check if the key parameters are correct.
Press the "Parameters" button once, and the system will enter the parameter setting state. At this time, F1 will be displayed in the power display window (as shown below),
XXXXX (torque range value) F1
Press the "Parameters" button again, and F2,... will be displayed until F10, where F1~F10 correspond to the above 10 parameters. When F10 is displayed, if you press the "Parameters" button again, a "-" will be displayed in the power position, and the system will store the top 10 parameters (not lost in case of power failure), and then automatically return to the working state.
Specific explanation:
Use the "Parameters" key to select parameters, and use the "Up" and "Down" keys to change the set values.
(1) Torque range F1
Used to set the range of torque, which is the range value of the torque sensor.
Its values are 1, 2, 5... 10000, 20000, 50000.
(2) Speed range F2
Used to set the range of rotational speed, calibrate the analog voltage output for rotational speed, and this value is the maximum value of the measured rotational speed signal. Its values are 1, 2, 5... 10000, 20000, 50000.
(3) Sensor coefficient F3
Used to set the coefficient of the torque sensor.
When the calibration coefficient of the torque sensor is "1 * * *", multiply the calibration coefficient by 5 and input the resulting value as the "torque sensor coefficient". When the calibration coefficient of the torque sensor is "7 * * *", "8 * * *", "9 * * *", input this calibration coefficient directly.
(4) Select F4 for speed input
Used to select the signal source for collecting rotational speed.
When "in" is displayed, it indicates that the signal for collecting speed comes from the torque sensor; When "out" is displayed, it indicates that the signal comes from an external photoelectric sensor, and the "external speed" light is on.
(5) Number of teeth F5 of torque sensor
Used to set the number of teeth of the torque sensor. Scope: 1~250.
(6) Number of teeth F6 of external speed sensor
Used to set the number of teeth of the external speed sensor. When the external speed sensor is not needed to collect speed, this parameter can be omitted. Scope: 1~250.
(7) Sampling period selection F7
The optional values are 0.1 seconds, 1 second, 2 seconds, and 4 seconds.
(8) Serial communication address F8
Used to set the communication address of the local device, ranging from 0 to 30. When there is no communication, this parameter may not be set.
(9) Torque reset F9
In F9 state, use the "up" or "down" keys to reset the torque (clear the initial torque and add zero value). When "0" is displayed, it indicates that the initial torque compensation zero value of the system is zero; When displayed as empty, it indicates that the initial torque compensation zero value of the system is not zero. Zeroing the torque to zero can be used to collect the phase of the torque sensor (with a range of 100 and a coefficient of 7200), and the torque value displayed by the instrument is the phase of the sensor.
(10) Torque reset F10
In F10 state, use the "up" or "down" keys to reset the speed (clear the deducted initial speed value). When "0" is displayed, it indicates that the initial speed deduction value of the system is zero; When displayed as empty, it indicates that the initial speed deduction value of the system is not zero.
4、 Zero torque compensation
This operation is used to compensate for the initial phase of the sensor and the additional torque of the rotating component, and there are two methods.
(1) Activate the auxiliary motor of the torque sensor to generate an initial phase signal for zero compensation. After the zero filling is completed, turn off the auxiliary motor. This method is used to collect power components such as motors.
(2) Disconnect the load, start the main motor, and perform zero compensation. This method is used to collect transmission components such as gearboxes.
The method is: in the non parametric setting state, hold down the "up" button and do not release it until the displayed torque value is approximately zero (about 3 seconds). The system automatically performs torque zeroing and stores the zeroing value, without the need to perform this operation every time it is used.
5、 Zero speed compensation
This operation is used to deduct the initial relative speed value of the sensor.
If the small motor is started and there is no external speed sensor installed on the spindle, the actual spindle speed can be obtained by subtracting the small motor speed from the internal speed. The specific method is: do not start the tested object, set the spindle speed to 0, start the small motor, and in the non parameter setting state, hold down the "down" button without releasing it until the displayed speed value is approximately zero (about 3 seconds). The system automatically performs speed zeroing and stores the zeroing value, without the need to perform this operation every time it is used.
6、 Connection of sensors
(1) Connect the two signal wires of the torque sensor to the "Signal 1" and "Signal 2" sockets of the instrument, which have no directionality.
(2) Connect the signal line of the speed sensor to the "Signal 3" socket of the instrument. Do not connect this signal when an external speed sensor is not needed to collect speed. The pin configuration of this terminal is:
1 pin:+12V 2 pins: signal 3 pins: ground
When the sensor is running, the "Signal 1", "Signal 2", and "Signal 3" indicator lights are on, indicating whether the corresponding signal connections are correct.
7、 Analog output
(3) The "analog" output terminal outputs two analog voltages, corresponding to the collected values of torque and speed. When the collected values of torque (or speed) reach the range, it outputs a DC voltage of 5V. The pin configuration of this terminal is:
1 pin: torque analog 2 pins: ground 3 pins: speed analog
8、 Connection of peripherals
This instrument provides an RS232 (or RS485) serial interface for communication with other devices. The serial communication port (DB9) pins are as follows:
RS232 interface: 2-pin: TXD, 3-pin: RXD, 5-pin: ground
RS485 interface: 2-pin: A, 3-pin: B, 5-pin: ground
9、 Precautions
(1) Correctly set the "torque range F1", "sensor coefficient F3", "speed input selection F4", and "torque sensor tooth count F5", otherwise the collected results will be incorrect.
(2) Fill in zeros using the correct method.
(3) When the speed of the torque sensor is low (about less than 50r/min), the output signal amplitude of the torque sensor is very small, which may cause the instrument to not collect correctly, resulting in unstable torque and speed values. At this time, it is advisable to turn on the auxiliary motor of the torque sensor to increase the relative speed of the sensor.
(4) Selection of Sampling Period
Usually, a sampling time of 1 second is used for sampling. However, if the operating conditions are not very stable or there are periodic fluctuations, and a stable average sampling value is desired, the sampling period can be set to 2 seconds or 4 seconds. When it is necessary to collect the changing process of faster operating conditions, a sampling period of 0.1 seconds can be selected. If the signal frequency is not high enough, increasing the sampling rate is meaningless.