Under speed switch is a reliable, counter-rotating speed and other rotation Simple and universal monitoring device for the device. When the current speed signal is detected to be lower than the normal speed range, the switch output switch signal is used for alarm or shutdown. No moving parts, no wear, long safety life, integrated structure, centralized control, easy setup or troubleshooting. Installation: The underspeed slip switch is installed on the conveyor driven wheel or other side of the shaft that can equal the actual belt running speed. The driven wheel or the side of the shaft should be welded with a sensing surface for the underspeed slip switch (the induction surface must be made of ferrous material). The cross section of the induction surface is not less than 50mm × 50mm, and the maximum distance between the underspeed slip switch and the induction surface is 25mm. The sensing surface provides a pulse signal for the underspeed slip switch, and the driven wheel rotates one revolution of the sensing surface through an underspeed slip switch region to generate a pulse signal. When a pulse signal is generated, the pulse indicator on the underspeed slip switch panel will flash once. It is necessary to ensure that there are no metal objects on the side of the driven wheel that can generate a pulse signal from the underspeed slip switch, except for the sensing surface. Settings: Press the SET button first to display the digital flashing, press again and then press the SET button to display the digital flashing, then press the button to display: 1, 2, 3. The key adjusts the value of the slip and then presses the SET button to set the success. Working principle: The underspeed slip switch is used to detect the rotation speed of the tail wheel of the belt conveyor, and the switch has no contact with the tail shaft. When the tail shaft rotates with the belt conveyor, the sensing piece is driven, and the sensing signals generated by the sensing piece and the detector are input to the control circuit. After being amplified, the count is performed after shaping, and the count value is compared with the preset number to determine the speed of the tape. When the speed is lower than the slip speed, the circuit outputs a corresponding switch signal to stop the host. This switch adjusts the speed value. Technical indicators: 1, working power: AC220V 2, temperature range: -20 ° C ~ +70 ° C 3, start delay: about 10 seconds 4, detection distance: the maximum distance from the detector to the sensing block Sn: 20mm 5 Contact capacity: 240V/AC, 3A, one set of normally open output, one set of normally closed 6, speed: 30-999 rev / min Frequency: 50-60Hz Power slip SET First press SET button to flash digitally, then press To display: 1, 2, 3. Press the key again to display the digital flashing, press the key to adjust the slipping value, and then press the SET key to set the success. 123456 220V ~
