ZJSHUYI Soft starter maintenance faults and solutions.www.shuyitop.com; ...

Soft starter input power failure 1. Check whether the input power is normal step by step. First, check whether the input power of the soft starter is normal. If the input power is abnormal, check whether the fuse is blown and whether the circuit breaker is out of phase. 2. If it is determined that the input power supply is normal, first consider replacing the soft-starting motherboard. This fault has occurred many times due to the quality of the motherboard. The soft starter panel has a black screen and no display 1. For such faults as blurry screen and black screen, most of them are quality problems, and the only way is to replace the soft-start motherboard. 2. If there is no display on the panel, first check whether the soft start control power supply (AC 220V) is normal. If the power supply is abnormal, then measure whether the fuse is blown, whether the circuit breaker is out of phase, and whether the control power line is disconnected. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsApp: 008613355775769 #softstarter #motorsoftstar #softstarters #Bypasssoftstarter#Onlinesoftstarter #SoftStarterRepair#softstartermarket #softstarterprice #builtinbypasssoftstarter #ZJSHUYI #Chinashuyi #shuyitop

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ZJSHUYI Usually the soft start system is composed of softstart device. w...

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Usually the soft start system is composed of softstart device, peripheral circuit and motor load. Therefore, the objects protected by the soft start system are also the soft start device, peripheral circuit and motor load. The purpose of protecting the soft start system is to ensure the safe and reliable operation of thyristor components, #softstarter equipment and circuits, and not damage or cause safety accidents under various abnormal working conditions. The premise of #softstarter protection is that the design of the soft starter itself should be correct. The thyristor components are correct and used correctly, the drive circuit and the control circuit are reasonably designed and matched with each other, so that the device can work in a good state. These measures are the basis for the safe and reliable operation of the soft starter. Only under this premise, can the devices, circuits, and equipment fail less and not fail from the inside, and the optimized system design should aim ...
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ZJSHUYI Classic case of inverter maintenance failure.www.shuyitop.com; ...

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Foreword: Inverter repairers must keep in mind that the inverter module and the drive circuit are strongly related to failures. When the inverter module bursts and damages, the drive circuit is bound to be damaged by impact. The damage of the inverter module may also be caused by the failure of the drive circuit. Therefore, whether it is a failure of the drive circuit or the inverter output circuit, it must be The inverter output circuit and the drive circuit are thoroughly inspected together. The power-on test of the main circuit must be carried out under the premise that the drive circuit is normal and can output six excitation pulses normally. Inverter power failure A 132KW inverter has a black screen fault. Part of the wire drawing machine stopped in the wire drawing workshop, and restarted production after half a month. As a result, the inverter went black after being powered on. It was judged that the switching power supply was faulty on the spot. The inverter was removed, and th...
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