[Introduction] JRD-RQ series soft starter is not exactly advanced processor core, control power thyristor module, with limit start, voltage ramp start, soft stop function, parameters can be set according to the load on their own, and over-current, overload, lack of equal protection. Soft starter output voltage is set by law increased, so that the motor torque is controlled by optimizing the acceleration curve starting process is completed, the turn-off thyristor module, work by bypassing the AC contactor. [Features] ◆ intelligent soft start digital, single-chip loop control; ◆ advanced soft start controlling a voltage-controlled current limiting b; ◆ Parking ways: soft parking and free parking; ◆ start time, stop time, starting voltage can be set flexibly according to the load through the panel; ◆ no phase sequence of input power requirements; ◆ overcurrent, overload, overheating, unbalanced three-phase AC, lack of equal protection; ◆ motor provides a smooth gradual Starting the process, reduce the starting current impact of the grid, reducing vibration and noise devices, extending the service life of mechanical transmission, and improved working environment of workers; ◆ starting current can be adjusted according to the load, reducing start-loss, with minimal currents produce the best torque; ◆ convenient external control interface with a variety of functions: start control arrays extend; instantaneous stop control input; start delay relay output; fault relay output; ◆ 485 comes standard; ◆ 0- 20ma standard analog current output; ◆ new product structure, small size, reliable performance, installation, easy operation uses; ◆ Harvard style SCM has a strong anti-jamming capability, protection and control systems from strong electrical interference. Typical applications Introduction ◆ pumps use the pump control functions, stop when you start to reduce the impact of liquid pump water hammer phenomenon generated by the system maintenance cost savings; ◆ mill using the voltage ramp start, reducing wear gear torque, reduced maintenance workload, saving time and saving costs; ◆ fan to replace the traditional use of soft starter starters, reducing wear and tear of mechanical shock belts, saving maintenance costs ◆ compressor limiting use to achieve a smooth start to reduce motor heating prolong life; ◆ crusher use stall protection box fast protection against mechanical failure or obstruction caused by motor overheating and burning; ◆ conveyor soft start and preset low speed, to achieve a smooth, gradual start the process, avoid moving and overflow objects on the conveyor. Technical indicators and conditions of use ◆ Power supply: three-phase AC380V (± 10%), 50HZ; ◆ Applicable motor: 500KW following types of squirrel cage induction motor; ◆ starting voltage: (30% -70%) 380V; ◆ soft starting time: 0-60 seconds; ◆ soft stop time: 0-60 seconds; ◆ start limiting: limiting the range of 1-4.5 times the rated current; ◆ control: keyboard, an optional external control in two ways; ◆ start frequency : standard product recommendation per hour evenly spaced no more than 10 times; ◆ Cooling: natural cold; ◆ conditions: When the soft starter is connected with the use of English bypass contactor; ◆ Protection grade: IP20; ◆ seismic capacity: Altitude 3000 meters, vibration device 0.5G below; ◆ Ambient temperature: -30-55 ℃; ◆ Humidity: 95% without condensation or dripping water; ◆ use: indoor non-corrosive gases, non-conductive dust and well ventilated.