First, the main purpose and scope of application: 
 This product is suitable for testing in the operation of the conveyor belt and slip between the main drum, to prevent accidents caused by skidding, the product is also suitable for a number of interlocking tape machine or shut down,. For stall detection. 
 First, the model shows: 





 Second, the technical parameters: 
 1, detection with a speed range: 0.05-9.99 / sec. 
 2, working Voltage: AC 220V 50HZ. 
 3, Contact capacity: AC 380V 5A. 
 4, Power consumption: 10W 
 5, output: There are two detection circuits, each with a changeover contact output. 
 6, the distance sensor and control box is not greater than 100 meters. 
 7, the protection level: sensor: IP65; control box: IP54 
 Third, the main structure and characteristics: 
 1, the product from the sensor head and control box, control box from the circuit board, panel, display, micro-touch switch and wiring terminal. 
 2, this product has a control box detects two tape speed. (Note: a sensor head to be purchased separately in order to achieve this function) 
 3, such as the detection circuit can be used all the way to short the terminals 10 and 13, to achieve the two outputs. 
 Fourth, the installation: 
 This product should be installed in the control box on the rack or from the tape machine heads close monitoring on the walls (not greater than 100 meters). Sensor head mounted above the belt conveyor belt and the belt running under the relatively stable place. Sensor head is installed in two ways: one is the sensor head welding machine tape roller holder in the beam below. Another user-selectable one angle (40 × 40 or more) to do the beam, in the middle of a fight two angle holes φ16 hole spacing see the belt conveyor idler spacing, this angle roller bracket fixed to the bolt can be. Figure 1 Outline and installation dimensions 
 V. How it works: 
 In the course of the product by two photoelectric sensor with speed signal, and then enter the control box, the microcomputer (CPU) with a speed calculated to send the actual LED display, with both pre-(entered with speed) comparison, if it is in the boot process, when the belt speed below the set value, the controller only with speed, without any treatment. When the belt speed is higher than the set value, the process starts over. The controller enters the normal operation, the face should be light (green) light. (Note: This product is in the startup process and conveyor system to work when the relay is released). Then the controller with a speed lower than the set value corresponding to the relay, signal, while the corresponding indicator (red), indicating that the belt slipping. Two input and output of each independently. 
 Note: (set value = nominal belt speed × 80%; 80% is the user-defined) 
 Sixth, the use and maintenance of: 
 1, use: 
 a, before using this product, you must first understand the product instruction manual. Before the bottom of the use and operation. 
 b, the first sensor head cable leads to the three wires (red, yellow (black), blue) follow the instructions and control box terminal block is connected to No. 9, 10 number, that is red → 9, yellow ( black) line → 10, → 11 connected to the blue line. If the 2nd sensor head, then connect it to the terminal block No. 12, 13 numbers, check the correct connection is completed and approved only after the power controller was working after power standby state. LED digital display of the left, there are two red LED marked with letters "A" and "B" A red LED lights to show the "A" road test status. Red light-emitting diode B, shows the "B" road test status. LED digital display shows "×.××" time for the tape drive speed. 
 c, in the control box panel LED digital display below the square membrane with four buttons: the "Select" key, "Shift" key, "add" button, and "programming" key. In the above prompt to enter the programming mode, press the "programming" health, this time into programming / modification status, then, point press the "Add" button to set the value to modify the location, its value ranges from 0 → 9, After setting the value, and then press the "shift" key, flashing a bit to the left, the move to the left shift cycle, modified to increase the value 0 → 9 cycles. 
 d, left panel LED digital tube up and down two red light-emitting diodes, as shown above on top of "A" road, below the "B" road, in the setting, attention should be set where the value should be the same way. 
 e, in the programming mode press the "Select" button to enter the normal working condition. In normal operation, press the "program" button, click on the left "A" red LED lights, LED third flashing, this will set the "A" road. Double-click the left "B" red LED lights, LED third flashing, this will set the "B" road. 
 f, the input belt conveyor belt speed skid point: if the user's tape machine with a rated speed of 3.50 m / s (ie 3.50m / S), with a speed rated if that decreased by 20% for spin speed, then is the point 2.80 m / s, first press the "programming" health, we could see the flashing LED in the third, using the "add" button to set the value 0 after setting. And then "shift" key left one, and use the "Add" button to set the value of 8, do the same method to the first input 2, the double-click "programming" button, click "Select" button with speed numeric input to complete. This value is also stored within the microprocessor. Then, if B inputs, you can use the same method to set the value into another way to set and modify. 
 g, the right panel there are LED digital tube 4 LEDs from top to bottom, a group of two, on top of "A" road group, below the "B" road group, "A" Road and "B" road group Each one red and one green light-emitting diode 2, when the green LED is lit, indicating the actual belt speed higher than the set value, if the red LED is lit, it indicates that the belt slipping, the signal will be output. If the four LEDs are lit when the controller during the boot process. 
 h, normal operation, press "Select" button to display the other way with the speed of the display. If no "B" input display "0.00." In the tape machine working LED digital display shows the number, he incurs the detected speed of the belt conveyor belt. 
 i, this product has been the controller at the factory settings, set the A road 1.0m / s, B Road, 1.5m / s, be sure to use the user modify the value detected by the tape machine to set up value, be sure to use must modify its value to detect the tape drive to be rated with a speed value, the user attention! 
 j, in order to ensure reliable operation of the detector, the detector in the power controller was only with the speed without any treatment, when the belt is running with the speed to normal after work. Long-term power supply can be powered with electric motors at the same time. (Such as long-term power supply when the motor stops 10 seconds after the shock relay released into standby mode.) 
 2, maintenance: 
 (1) Upon detection of a real-time detector with a speed below the set value and output corresponding signals to maintain, to be instant with a speed higher than the set value, or belt electromechanical relay machine stops for 10 seconds after the shock release. Waiting for the next belt testing electrical machine operation to continue. 

 (2) detection and control of the internal detector circuit used in all integrated circuit, thereby greatly improving the detection accuracy and reliability of detection, but in use, the parameters must be given technical parameters, the detector in order to stabilize to work. 
 (3) to periodically check the sensor head installation screws, without loosening. Sensor head and control box connection cables are reliable, distance no greater than 100 meters, sensor head should be relatively reliable contacts with the belt. Test wheel should be run with the belt and the corresponding rotation. 
 (4) detector used in case of failure and abnormal, please do not open, contact with manufacturers and timely consultation. 
 (5) If you need such as: light skid, heavy skid signal output or 4-20mA output, etc., please contact us to order non-contact speed detector, these products have more features. DH-F1-type secondary instrument is installed in the form, DH-F2-type form is the installation wall.