As shown in the figure, the hoist fault alarm circuit. The alarm is composed of a sensor, a 555 monostable trigger, an alarm circuit, and the like. The sensor is a magnetron switch composed of a permanent magnet and a reed pipe, and the former is fastened to the driven wheel, and the latter is fixed at a specific position. The monostable flip-flop consists of IC (555), R, C2, and so on. The alarm circuit is composed of a relay, a light emitting diode, and the like.
High Bay Light Led Driver
Constant current LED driver, UL dimmable transformer, With global manufacturing standards and various certifications including CE, UL and FCC, our lighting products are sold in domestic market and are exported to various international markets including US, UK, France, Germany, Australia, Africa, Korea etc. We offer a wide range of LED lighting solutions which includes LED Linear Lighting or System, , LED Lams, LED High bay lights etc. Maximize beauty of your workplace with our beautiful Warehouse Lighting, Workshop Lighting, Supermarket Lighting and Factory lighting solutions.
Application: Specifically for high bay light,High Power Led Driver above 100W,normal for outdoor for waterproof, AC100-277V, 0-10V/PWM/RX dimming,short circuit protection,class 2 satety output design, passed the UL/FCC/TUV/RCM/CB/CE Certified. Europe and North America market.
Parameter:
Input voltage: 100-277vac
IP degree: IP65
FAQ:
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When the rotation speed is normal, C1 is charged every time one revolution, because the magnetic control switch is closed. Adjusting the potentiometer W1 makes the charging voltage on C1 slightly higher than 1/3 VDD, and the output terminal (3 feet) of 555 is kept low, and the corresponding LED 1 is illuminated. When the driven wheel speed is lower than the normal speed due to the fault, the corresponding discharge time of the capacitor C1 is lengthened, so that the voltage on it is lower than 1/3 VDD, 555 is inverted, and the output is high. At this time, the relay J connected to the output terminal (3 feet) is sucked, thereby controlling the relevant process equipment of the intermediate relay. Simultaneously. The LED 2 that displays the fault is lit.
This circuit is based on the fact that when the hoist is overloaded or the drive pulley is loose, the speed of the driven wheel will be slower, and the relationship between the trigger level of 555 and the RC charge and discharge time constant is designed, thus having the function of fault alarm. 
output voltage: 25-143vdc
current: 100mA-8000mA.
Power factor: >0.9
Dimming:0-10V / PWM / RX / DALI.
>=50000hours, 3-5 years warranty.
certificate: UL CE FCC TUV SAA ect.
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Answer: Fahold focused on LED controllers and dimmers from 2010. We have 28 engineers who dedicated themselves to researching and developing LED controlling and dimming system.
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