Haidian, Changping, Shunyi vector wind models inverter frequency counter maintenance sales

Haidian, Changping, Shunyi | vector wind models drive | frequency counters | Maintenance | Sales do, Changping Weier Kai converter sales Changping vector wind models inverter cabinets custom production Changping Changping vector wind models Weier Kai Drive converter cabinet a higher probability of failure occurs mostly synchronous motor speed is higher than the actual speed, the motor in the power generation state, and the drive has no braking unit is installed, there are two situations can cause this failure. First, when the drive is dragging a large inertia load, the deceleration time is set relatively small, during deceleration, the inverter output speed faster, and the load is relatively slow deceleration resistance rely on itself, so that the load drag motor speed than the frequency inverter output corresponding to the rotational speed is even higher, the motor in the power generation state, and the drive is not energy feedback unit, thus increasing the inverter tributary of the DC circuit voltage beyond protection value, failure, and the machine often occur In the drying section, the process of this failure can increase the regenerative braking unit or modify the inverter parameters set in the inverter deceleration time longer. Second, the doer with a plurality of electric load, this failure may also occur, mainly due to the absence of load distribution. With two electric motors to drag a load, for example, when the actual speed of a motor is greater than the other motor synchronous speed, the high speed of the motor is equivalent to the prime mover, the low speed of the power generation state, causing malfunction. In the paper machine press section and often occurs in the wire section, the need to add processing load distribution control. It can drive characteristics in paper machine drive speed chain branch adjust softer. Overcurrent fault can be divided into acceleration, deceleration, constant speed overcurrent. It may be due to inverter deceleration time is too short, the load is mutated, the uneven distribution of load, output short circuit causes. Then generally by extending acceleration and deceleration time, reduce the load of mutations, plus dynamic braking components, load distribution design of the line to be checked. If you disconnect the drive load or overcurrent fault, indicating the drive inverter circuit has a ring, you need to replace the drive. Overload fault including the frequency overloads and electrical machinery overload. Which may be the acceleration time is too short, DC braking is too large, the grid voltage is too low, overloading and other causes. Usually by extending acceleration time and prolong braking time, check the grid voltage. Overloaded, the selected motor and the drive can not drag the load, it may be due to a mechanical cause poor lubrication. As the former must be replaced and the drive power of the motor; if the latter will have to carry out maintenance on production machinery.