U-shaped gantry crane electrical control system debugging method

gantry crane commissioning main steps are as follows:
1. The PC via RS-232 interface with the PLC on the Service port connection. FCB software defined using the PLC UO address, according to the door of the operating characteristics of the preparation and control of process control procedures; writing good programs are stored in the PLC within FPROM, PLC program from the FPROM then read to the RAM to run.
2. Set the transmission mechanism in the PLC address. DB section of the program defined by DRB00 module on the drive point DRIVEBUS address can define up to 12 addresses.
3. Inverter parameter. The motor before it needs to be put into operation identification operations, the identification run is completed, the drive motor according to the identified parameters to establish a digital model, and based on the model of the motor control.
Fourth, the effect of reconstruction
After transformation, the door has the following characteristics:
1. Motor mechanical properties harden, accurate positioning, improve unloading efficiency.
2. Run, Kai, smooth braking, acceleration or deceleration shock decreases, improve safety and prolong the service life of machinery.
3. Remove the eddy current brake, electrical braking by the inverter, reducing energy consumption, but also reduces the amount of maintenance.
4. Mechanical brake in the motor speed approaches zero speed input, so the mechanical brake brake pad life is greatly extended.
5. bridge gantry crane  The original winding induction motor speed control resistor removed; shorted collector ring converted squirrel cage motor use, saving the cost of replacing the motor.
6. Reduce the amount of AC contactors, stepless.
7. Combined with PLC and inverter own protection, detection, fault alarm and other powerful features that enhance the stability of electric control system.
       After the scene were used to detect the amplitude SU2, lifting, opening and closing the stability, grab rated load 16t, set the overload capacity of 120%, when the load reaches 110% × l6t alarm, reaching 118% × l6t a block Lifting 1.5s stop lifting, grab overload protection to achieve accurate digitization. Grab the full load in third gear lifting drops can accurately stop fighting without falling phenomenon. Grab, luffing smooth acceleration and deceleration, the basic realization of variable speed. Change Hezui accurately stop at 9m, has not yet found together due to amplitude overshoot 8m caused by the failure repair.
        After field tests were used to detect the amplitude SU2, lifting, opening and closing the stability,hoist gantry crane grab overload protection to achieve accurate digitization. Grab the full load in third gear lifting drops can accurately stop fighting without falling phenomenon. Grab, luffing smooth acceleration and deceleration, the basic realization of variable speed. Change Hezui accurately stop at 9m, has not yet found together due to amplitude overshoot 8m caused by the failure repair. After transformation to achieve energy feedback, saving 30% than the original system. Transformation of the former system needs to be replaced once every quarter and the main contactor auxiliary contactor contacts, the contacts are expensive and consumes a lot of manpower during installation, maintenance, cost up to 30,000 yuan / month. After transformation,overhead bridge crane the inverter requires only periodic cleaning and maintenance, saving maintenance costs, the statistics for each quarter, cost savings more than 120,000 yuan.