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跑偏開關PST-A-20-35-參數電壓400V是用于檢測帶式輸送機運行過程中輸送帶跑偏程度并進行報警以及自動觸發緊急停機的種保護裝置。是用于檢測帶式輸送機運行過程中輸送帶跑偏程度并進行報警以及自動觸發緊急停機的種保護裝置。使用跑偏開關可防止昂貴的輸送帶受損害以防止進步的工礦事故和人生傷害。兩跑偏開關在安全運行輸送系統里是的保護裝置，其廣泛應用于鋼鐵廠、火力發電廠、水泥廠、化工廠、港口等。

跑偏開關PST-A-20-35應用范圍                                                        
常規皮帶輸送機，包括平皮帶輸送機和槽形皮帶輸送機
地下、索道支撐皮帶輸送機
輪船裝卸系統、堆取料輸送機
本系列跑偏開關具有兩動作功能。動作用于報警，二動作用于自動停機。膠帶機在運行中，當膠帶跑偏且與本開關立輥接觸時，立輥自轉，若跑偏量繼續加大，則擠壓立輥發生偏移。當立輥偏轉角度超過20°時，開關動作，輸出報警信號。當立輥偏轉角度超過35°以上時，二開關動作，輸出停機信號。開關信號用于報警，如果將此信號與跑調整裝置相接，即可實現不停機狀態下的跑偏自動調整。二開關信號用于停機，將此信號接至控制線路中，即可實現重度跑偏狀態下的自動停機。當故障排除后，輸送帶離開立輥正常運轉時，立輥可自動復位。
Deflection switch PST-A-20-35 application range

Conventional belt conveyors include flat belt conveyors and trough belt conveyors

Underground, ropeway support belt conveyor

Ship loading and unloading system, stacker and reclaimer conveyor

This series of off-track switches has two levels of action function. The first action is used for alarm, and the second action is used for automatic s. When the rubber belt machine is in operation, the vertical roller will rotate when the rubber belt is deviated and in contact with the switch vertical roller. If the deviation continues to increase, the extrusion vertical roller will be deviated. When the deflection Angle of the vertical roll exceeds 20°, the first stage switches to output alarm signal. When the vertical roll deflection Angle exceeds 35° or above, the two-stage switch action will output the s signal. The first stage switch signal is used for alarm. If the signal is connected with the running adjustment device, automatic deviation adjustment can be realized under the condition of not sping. Secondary switch signal is used for sping. Connect this signal to the control line to realize the automatic s under the state of heavy off-track. When the conveyor belt leaves the vertical roller for normal operation after troubleshooting, the vertical roller can reset automatically.