Working principle: The two-stage deviation switch NKPK1-12-30 is installed on both sides of the belt conveyor, 1-3 meters away from the front and rear ends of the belt conveyor. When the belt deviates, the edge of the belt presses against the gear wheel, forcing it to deflect and causing the limit switch to operate. To reduce friction between the gear wheel and the belt, the main body of the gear wheel is made of bearings. When a minor deviation accident occurs (15 °), the * group contacts of the DPP-K2/J two-stage deviation switch act, issuing an accident warning signal. When a serious deviation accident occurs (30 °), the second set of contacts of the DPP-K2/J two-stage deviation switch will activate, which can automatically stop the conveyor. Features: Simple and practical structure, stable and reliable performance, dust-proof, shockproof, moisture-proof, small size, light weight, long service life, easy installation, maintenance free. The output signal can be interlocked with on-site equipment and can also be delivered to microcomputer control systems. Power supply adaptability: 24~380V (passive switch quantity). Deviation switch NKPK1-12-30. Deviation switch NKPK1-12-30. Technical parameters: Working voltage: 24~380V; model; NKPK1-12-30 insulation resistance:>500M Ω; Output signal: Passive switch signal Environmental temperature: -20 ℃~+60 ℃; Environmental humidity: ＜ 90% Weight: 2Kg; Protection level: IP65, reset method: automatic reset& nbsp; Response time: ＜ 2mS Control contact capacity: 3-5A; Action power: 50± 10NHG-500K   HG-1000K  SC125x150,/SC125x150  HF-2  HF-5  /SC125x200  HF-10  HF-20  SC125x250,/SC125x250  HF-50    HF-100    HF-200  /SC125x300  HF-500/HF500  / SC125x350  /SC125x400  HF-1K  N02      N07    HT5         ()HG-1K  / SC100x500  /SC100x600   /SC100x700  HG-2K  /SC100x800  /SC100x900  /SC100x1000  HG-5K  HG-10K    HG-20K  HG-30K  HG-50K  HG-100K  /SC125x50     /SC80x1000  HG-5  /SC100x50  HG-10  /SC100x100  /SC100x150  HG-20  /SC100x200  /SC100x250     /SC100x300  HG-100  /SC100x350    HG-500/HG500  /SC100x400  /SC100x450  N05    N05/90    /SC80x150  /SC80x200  NK-10  /SC80x250  NK-20  /SC80x300  /SC80x350  /SC80x400  NK-30  /SC80x450  NK-50/NK50  /SC80x500  NK-100  /SC80x600  NK-200  /SC80x 700   NK-300  /SC80x800  NK-500  /SC80x900  /SC63x150  IRC-630  /SC63x300  /SC63x350  BDM-1  /SC63x400  NV-100c  /SC63x500  NV-100D  /SC63x600  /SC63x700  KD-5  /SC63x800  V-500-4  /SC63x900  /SC63x1000  V-830  /SC80x50  /SC80x100  V-810  XA-911  /SC50x600  XP-702ⅡZ   XP-3110  /SC50x700  XP-3160  / SC50x800  XP-707Ⅱ  / SC50x900  /SC50x1000  XA-370  /SC63x50  XP-707B  /SC63x100  /SC63x200  XP-311A  /SC63x250  XA-328id  PS-6AH/PS-6NH  PS-6/PS-6N  /SC40x900  /SC40x1000  /SC50x50  SZMJ－302  SZMJ-102  /SC50x100  PSY-2  /SC50x150  SZGM-01    /SC50x200  /SC50x250   ()HEWK-01  / SC50x300   BZX-1H1  /SC50x350  XP-311A  /SC50x400  XP-3140  /SC50x450  /SC50x500  /SC40x50  SZE-02  SZBS-1   Basic principle: When the conveyor belt deviates during operation, the conveyor belt touches the switch roller and causes the roller to deflect. When the roller deflection angle reaches level 1 switch angle, the switch sends an alarm signal. When the conveyor belt deviates seriously and reaches the second level switch angle, the switch sends a stop signal to automatically stop the conveyor belt due to deviation fault. When the deviation fault is eliminated and the tape machine is running normally, the switch vertical roller can automatically reset and return to the initial state< br/>