Belt conveyor is a kind of continuous conveyor, which is one of the most important types of stationary or escorted cranes. The belt conveyor is a continuous conveyor equipment that uses friction to convey the dynamics, and uses belts, steel belts, steel fiber belts and chemical fiber belts as a kind of adaptability and traction operations for conveying materials and traction operations. The soft-start installation of the belt conveyor is operated by a PLC system to stop the control, braking and operation stop control. PLC (Programmable PLC Controller, abbreviation: PLC) control system has the following functions:
1. The PLC can calculate the actual load at that time according to the sum of the load current of the drive motor when the belt conveyor stops each time. When starting again, PLC can choose how many motors are needed when the belt conveyor starts, and choose the starting closure table that is more suitable for this load, that is, the combination of the motor starting acceleration stage, so that the drive motor outputs the appropriate torque, and ensures that the conveyor starts smoothly according to the acceleration required by the plan, and the closure table can be calculated according to the formula, and can also be stored in the PLC in the form of a table.
2. The current gauge is selected to switch the starting resistance of the drive motor by a one-time maintenance method to ensure that the reliable start can be stopped under various load conditions.
3. The shutdown process of the belt conveyor can also be suspended, so that the shutdown characteristics can be satisfied with the planning and pleading, and the impact of the conveyor during the shutdown process can be reduced. The electrical backstop feature is planned on the uplink conveyor to prevent the conveyor from slewing and rolling when the conveyor is stopped with load. In the degree of large inertia, the belt conveyor uses DC energy consumption braking skills, cooperates with the adjustment of the rotor resistance of the motor, and controls the braking characteristics of the belt conveyor.
4. Complete the software-based drag system control. The selection of PLC control and binary resistance planning makes the control of the motor starting process have a certain adaptability to the load change. The softwareization of a large number of jobs can reduce the amount of debugging work, improve the sensitivity of correction work, and make parameter correction convenient.
5. On the side of the delivery system composed of multiple belt conveyors, the PLCs of each belt conveyor are connected to each other through the communication network to form an advanced control system. The communication network completes the mission of instruction transmission, data exchange, operation status monitoring, etc.
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Check whether there are any abnormal changes in the sound of the motor during operation, including whether there is vibration during the operation of the motor.
Routine inspection item 2 of Delta inverter problem repair:
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Repair of Delta inverter problemsView items
Daily inspection item 1 of Delta's inverter problem repair:
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