Current status of the shaft gate control
Currently, with the development of our country's economy, gate axes have become very necessary and widely used. However, the gate control system part still has some limitations and disadvantages.
The two girder moving motors are typically powered directly from the grid without an inverter or soft start, resulting in the following problems:
- The engine can run at only one speed.
- Direct boot or Y-∆ causes a voltage drop in the system, directly affecting the quality of the electrical network.
- At start-up, the crane girder is easily twisted, reducing the safety of the operator.
- The process of starting and stopping is usually not smooth, affecting the service life of mechanical devices (gears, bearings, welds).
- Electrical energy is consumed a lot (especially loads that must start-stop frequently).
- Maintenance costs - high maintenance.
VFD-E inverter solution for shaft gate control
To solve the above problem, we offer the solution:
Improvement of border beam controlling axis gate
With the two crane girder moving motors controlled via VFD-E inverter, the shaft gate control system overcomes the following problems:
- Avoid causing voltage drop to the system, stable power quality. Smooth start and stop process, reduced noise, increase engine life.
- Multi-speed multi-speed capabilities help improve transport productivity.
- Increase the life of the welds on the girder and mechanical accessories such as gears, bearings... Reduce maintenance and maintenance costs.
- It is safer for workers to operate when the side beam is no longer vibrated.
- VFD-E inverter will error and stop when either motor malfunction. Increased safety for the system.
The outstanding features of VFD-E inverters for shaft gate control application
Image of VFD-E inverter's dominant features for shaft gate control application
- PLC features: integrated PLC with program capacity up to 500 Steps, so that you can program and operate the port system in the most flexible way without using an external PLC.
- Integrated V / f and Sensorless Vector control modes.
- Starting torque of 150% at 3Hz helps to start up the shaft gate system very smoothly, without any vibration.
- 150% overload capacity for 60s.
- Built-in interference filter (EMI filter), prevents interference during operation.
- Designed with modular form for easy maintenance and maintenance.
- Heat resistant up to 50oC.
- Integrated braking unit up to 15Kw capacity range.