Soft start control system of construction lifter
A technology for construction lifts and control systems, applied in starter parts and other directions, can solve the problems of high price of variable frequency control systems, short service life of motors, and large current shocks, and achieve high operational reliability, prolong service life, and reduce shocks. Effect
Inactive Publication Date: 2012-05-16
江苏三上机电制造股份有限公司
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Problems solved by technology
[0002] The existing construction elevators are generally controlled by direct start when starting, with large current impact, large vibration, and short service life of the motor; while the existing frequency conversion control system is expensive and complex in structure
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[0013] A soft start control system for a construction hoist, comprising a soft starter 2 that receives commands from a master commander 1, the soft starter is connected with a dummy load 3 that is connected in the early stage of the soft starter and disconnected after the motor is connected; the soft starter Connect with the operation output delayer 4, the operation output delayer is connected with the contactors 6, 7 that control the forward and reverse rotation of the motor 5, and the contactors 6, 7 that control the forward and reverse rotation of the motor are connected with the motor 5, and the motor 5 is set There is an electromagnetic brake coil 8; the soft starter is connected with the soft stop self-protection circuit 9 connected with the motor. The soft starter is connected to the bypass output circuit 10 which disables the system when the bypass output is present. The soft starter is connected with the fault output circuit 11 that controls the disconnection of the p...
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The invention discloses a soft start control system of a construction lifter, comprising a soft starter which receives the order of a master device. The soft starter is connected with dummy load which is accessed in the earlier state of the starting of the soft starter and is disconnected after a motor is accessed; the soft starter is connected with an operation output delayer; the operation output delayer is connected with a contactor which controls the motor to carry out forward / reversal rotation; the contactor which controls the motor to carry out forward / reversal rotation is connected with the motor; the motor is provided with an electromagnetic brake coil; and the soft starter and a soft stop self holding circuit connected with the motor are connected. The control system has reasonable structure, has the function of soft start and soft stop, lowers starting current impact, prolongs the service life of the motor, increases riding comfort level, improves working efficiency and moreimportantly has high operation reliability, small maintenance workload, low cost and high cost performance.
Description
Technical field: [0001] The invention relates to a start-up control system of a construction hoist. Background technique: [0002] Existing construction elevators generally adopt direct start-up control when starting, with large current impact, large vibration, and short service life of the motor; while the existing frequency conversion control system is expensive and complex in structure. Invention content: [0003] The purpose of the present invention is to provide a construction hoist soft start control system with reasonable structure, soft start, effectively reducing the impact of starting current and prolonging the service life of the motor. [0004] Technical solution of the present invention is: [0005] A soft start control system for a construction hoist, characterized in that: it includes a soft starter that receives commands from the master commander, and the soft starter is connected with a dummy load that is connected in the early stage of the soft starter a...
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IPC IPC(8): H02P1/04
Inventor 葛启辉郁建华
Owner 江苏三上机电制造股份有限公司