JJR系列电机软起动器选型手册

JJR5000/

INTELLIGENT TYPE SOFT STARTER

3 modes of startup: Voltage sloped starting can reach maxi output torque, constant current starting mode can limit the startup current as much as possible, heavy-loading strating can get maxi startup torque.

Stopping mode: voltage sloped soft stop, free stop.

Programmable delay startup mode, programmable interlocked control, programmable fault link output.

Phase sequence is not required.

Startup time and stop duration can be changed from program.

Multi protection functions: over-current, three-phase unbalance, overhea-ting, phase failure, motor overload.

Dynamic fault record, it is easy to find out the fault point, record 5 faults at maximum.

It can measure maxi starting current and maxi working current online

Full dynamic control and monitoring starter of local bus, easy to shunt with the network(optional)

Chinese display: LCD can display various value, there has chines word instruction for program and faults.

During the start or stop of the three-phase squirrel cage asynchonous motor. there are still some problems. For example, the impact imposed on the dray system by impact torque during full pressure starting, and the impact imposed on the power network by starting current. In addition, if the voltage of the motor exceeds the rated voltage, the iron loss will increase; while if it is below the rated voltage, the copper loss of the motor will increase, If the drag system loses the torque suddenly when the motor stops running, the intertial sliding stop-running of the system should be overcome only by frictional troque, hen many problems will occur in the drag system, for example, the water hammer phenomena of the water pump and so on.

The starting method of traditional motor is to adopt Y- starter and self-coupling reduced voltage starter. which can only reduce the impact on the power network imposed by the starting current of the motor and to guarantee the reliable starting of the motor. but the above could not solve other problems. JJR series motor soft starter adopts intelligent digital control to carry out automatic control on the motor by useing mono chip computer as the intelligent center and the controllable silicon module as the executing component. It is to be applied to squirrel cage asynchronous motor control with various loads. and helps the motor to start smootly under any operation conditions so that it protects the dragg syystem. reduce under any operation conditions so that it rotects the drag system, reduce the impact on the power network imposed ty the starting current and ensure the reliable starting the motor, It also helps the motor to stop running smoothly with a reduced speed and eliminate the anti-intertial impact of the drag system. The complete system construction price and to improve system reliablity. It is compatible with various functions of all starting equipments and is the idealist new generation of Y- starters and self-coupling reduced voltage starters and mangetic control voltage dropped starter.

exquisite intelligent