In the lifting industry, it is inevitable to face the emergency situation of equipment;
Power grid quality is not good, "pressure" Force mountain assembly has a small mood;
Hot weather and high temperature environment, easy to suffer from heat stroke to take high temperature vacation;
Occasionally encounter instantaneous power failure, no emergency plan chaos into a pot of porridge.
Lifting site has all kinds of temporary changes
The equipment went on strike
How can you delay a project and have an accident?
At this time, the need to lift a special converter to move a magic!
Electric hoist, construction lift, tower crane, gantry bridge crane, all hold
Lifting equipment type and configuration:
1. Building hoist = elevator, one frequency conversion control 2/3 motors
2. Tower crane = main hook + width (horizontal movement) + rotation
3. Electric hoist crane = main hook (secondary hook) + crane (horizontal movement)
4. Portal crane = main hook + crane (horizontal movement)
Application of lifting machinery in building construction
Construction lift, is often used in high-rise buildings to carry people and goods construction machinery, mainly used for high-rise building interior and exterior decoration work.At present, a large number of building elevators use frequency conversion control instead of the traditional power frequency control, so that the system operation is more stable, the safety and comfort of equipment has been greatly improved, at the same time, also reduce the failure rate of the system, improve production efficiency and save equipment maintenance cost.
At present, Powtran Technology has two special lifts for construction:
●PS500-L series construction lifting all-in-one machine
●PI500-L series dedicated inverter for lifting
Ps500-l series building construction Lifting all-in-one machine Features:
(1) Modular design, set inverter, GPRS monitoring system, intelligent microcomputer control board in one, easy to install the system, wiring more simple and fast, save the installation materials, easy to assemble and disassemble transportation, labor costs, etc.
(2) Intelligent operation platform, intuitive man-machine interface, simple and clear operation, reduce labor intensity and reduce potential accidents.
(3) Built-in brake unit, lifting weight restrictor, customers do not need to be configured separately, simple to use, high precision, reliable and durable.
(4) Built-in GPRS communication interface for remote monitoring.
(5) Hoisting special release brake timing sequence, safe and reliable.
(6) The inverter truly realizes the braking under the state of "zero speed". The flat layer is stable, the impact is small, the wear of gear is reduced, and the service life is greatly improved.
(7) Embedded installation in the cage, saving the internal space of the hanging cage.
(8) Flexible wiring for control lines. Plug and unplug terminals are used for control CARDS. Terminal wiring or aviation socket wiring can be selected for operation stations.
(9) Waterproof design of the whole machine, after rain proof experiment, IP54 waterproof grade.
(10) Easy installation, debugging and maintenance
PI500-L Special inverter for Lifting and Lifting:
(1) Unique lifting special parameter set, more suitable for the system needs
(2) Pi500L-G3B with built-in brake unit (external dimension is different from that of standard machine)
(3) Two sets of motor parameters built in can be switched according to customer (on-site) requirements
(4) Perfect lock brake detection function, contactor detection function, upper and lower limit protection function, upper and lower limit protection function and other fault protection functions, so as to keep the equipment away from danger.
(5) TI 32-bit DSP control system and the world's leading speed sensorless vector control technology can meet the needs of various applications of target industry customers.
Wiring diagram for PI500-L series construction Lifts:
Benefits of frequency conversion scheme for construction ladder:
● Improve efficiency, the highest speed can be improved, up/down can be switched directly, frequent inching;
● Comfort has been significantly improved, the speed of the suspension cage is almost zero brake action;
● Brake, output gear, small roller, contactor service life to extend, greatly reduce the maintenance cost;
● When the grid voltage is reduced, it will not be blocked due to insufficient output, and the input voltage of 380V±15% can work normally.
● Cost significantly reduced: PI500-L price < inverter + electric control cabinet.
Application of PI500-L in port Gate bridge crane
Crane is refers to in a certain range of vertical lifting and horizontal moving heavy lifting devices, also known as crane, crane and crane.Bridge crane is cross - mounted in large factories, mining workshops, storage yard, station yard, port dock.The crane runs longitudinally on the elevated track on both sides, which can make full use of the space below the bridge frame to transport goods without being hindered by ground equipment. It is a kind of lifting equipment with a wide range of use and the largest number.The characteristics of lifting equipment is intermittent work, that is, in a working cycle to take materials, migration, unloading and other actions of the corresponding mechanism is alternate work, because of the rapid development of modern logistics industry, the crane in the market to develop and use more and more widely.
PI500-L is specially designed for lifting and lifting industries. It adopts international advanced vector control mode to meet the requirements of safety, stability, reliability and efficiency.Mainly used in ports, mining machinery, factories and mining enterprises, construction machinery and other lifting machinery.
PI500-L series lifting special control (lifting) Features:
1. Power range: 0.4kW~800kW
2. Lock timing logic control
3. Perfect motor self-learning function
4. Master and slave control synchronization technology
5. Perfect RS485 communication function
6. The control loop power supply and the main power supply can be controlled separately
7. Motor control and switching functions of group 2
8. Pre-excitation and starting pre-torque compensation functions
9. Current vector control technology 0.5 Hz to achieve 150% torque output (no PG control)
10. Rich peripheral interface and powerful protection function
Application of PI500-L in electric hoist:
Electric hoist is a kind of special lifting equipment, installed in the crane, gantry crane, electric hoist with small volume, light weight, simple operation, easy to use and other characteristics, widely used in industrial and mining enterprises, storage, wharf and other places.
This type of crane is reformed by variable speed converter, which solves the problem that the crane speed cannot be adjusted in operation.In order to reduce the equipment cost, the main hook and the trolley of electric hoist crane adopt a common frequency converter scheme. The trolley and the main hook can not run at the same time by means of mechanical interlock and electrical interlock.
PI500-L series electric hoist special control features:
(1) Reliable brake control, fast shutdown, DC excitation, master-slave control and other technologies.It reduces the impact of motor on the mechanical system during starting and stopping, and improves the smoothness and comfort of the mechanical equipment during operation.It extends the service life of mechanical equipment, greatly improves the production efficiency and saves the maintenance cost of equipment.
(2) Wireless communication function can be configured according to customer requirements, data can be monitored through mobile phone or PC, and remote machine locking and unlocking operation can be conducted;
(3) The touch screen can be configured according to customer requirements, and the local intuitive observation and setting of parameters can be done;
PI500-L series electric hoist application wiring diagram:
Application of PI500-L in tower Crane
PI500-L series tower crane special control features:
(1) Flexible torque control, "soft middle with rigid" inching is strong and powerful, with fast response, and the big arm is stable and does not rebound;
(2) Application of rotary control macro: eddy current motor control mode, anti-torque control mode of ordinary motor, hydraulic coupling combined control mode;
(3) Adapt to multi-type motor control: rigid connection of eddy current motor, soft connection of hydraulic coupler;Rigid connection of torque motor.
(4) Operate at low speed, the gear shift is stable, the big arm is coherent and smooth, and there is no "stop" phenomenon.
Lifting machinery intelligent management system
Monitoring whether the lifting machinery is overweight or exceeding the moment of illegal operations, and record alarm information, real-time feedback to the project supervisors, prevent the occurrence of crane safety accidents, plays an important role in safety monitoring and management.
