ZJSHUYI Soft starter parameter setting instructions and skills(1). www.s...

1. Startup Curve - Set the time for voltage boost at startup Description: Ramp boost soft start. This starting method is the simplest, it does not have current closed-loop control, and only adjusts the conduction angle of the thyristor to increase it as a function of time. The disadvantage is that, due to the unrestricted current, when the motor is started, sometimes a large inrush current is generated to damage the thyristor, which has a great impact on the power grid and is rarely used in practice. Start-up time can be adjusted within 1-30 seconds. 2. Stop curve - set the speed of voltage drop at stop time Description: When the motor stops, the traditional control method is completed by instantaneous power failure. But there are many applications where momentary shutdown of the motor is not allowed. For example, if the pump system of high-rise buildings and buildings is stopped instantaneously, it will produce a huge "water hammer" effect, which will damage the pipes and even the pumps. In order to reduce and prevent the "water hammer" effect, the motor needs to be stopped gradually, that is, soft stop. The use of a soft starter can meet this requirement. The soft stop function in the soft starter is that after the thyristor receives the stop command, the conduction angle is gradually reduced from full conduction, and the process transitions to full shutdown after a certain period of time. The parking time can be adjusted from 0 to 30s according to actual needs. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsApp: 008613355775769 #softstarter #motorsoftstar #softstarters #softstartechnology #softstartermarket #softstarterprice #ac powersoftstarterwithbuilt-inbypass #threephaseforacmotor #builtinbypassseriesratedacsoftstarter #builtinbypasssoftstarter #singlephasemotorsoftstarter

评论

发表评论

此博客中的热门博文

ZJSHUYI Maintenance requirements for frequency converters. www.shuyitop....

图片
Maintenance requirements in the day-to-day operation of the frequency converter 1. Check whether the cooling system is normal, and clean the dust of the air filter. 2. Check whether the screws, bolts and other fasteners of the inverter are loose, and perform necessary tightening; for the parts with soldering and crimping terminals, check whether there is corrosion, discoloration, cracks, damage, etc., and also check the frame Whether the structural parts are loose, whether the conductors and wires are damaged, etc. 3. Check whether the connection of the control circuit board is loose, whether the capacitor is leaking, whether the lines on the board are rusted, broken, etc. 4. Check whether the filter capacitor is leaking and whether the capacitance is reduced. 5. Check whether the insulation resistance is within the normal range. www.shuyitop.com; Tel/Fax: 0086-577-62840011 WhatsApp: 008613355775769 #VFD #INVERTER #frequencyinverter #frequencyconverter #shuyitop #converter ...
阅读全文

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

图片
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 ...
阅读全文

ZJSHUYI Classic case of inverter maintenance failure.www.shuyitop.com; ...

图片
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...
阅读全文