Digital Controller

Using the advanced microprocessor as a core, jjr1000 series digital soft start controller can control high-power thyristors components, it has limiting current start, voltage ramp starting, soft stop functions, setting parameter automatically according to the load, and it has kinds of protection on over-current、over-load、open-phase and so on. The output voltage of the soft start device increases along with the defined ruls, shut off the thyristor module after making the controlled motor torque finish the starting process with the optimized acceleration curves, let bypass ac contactor work instead
typical application introduction
(1) water pump---making use of the pump control function, when start or stop, it can reduce the flow liquid surge into pump water hammer phenomenon, saveing the costs of system maintenance.
(2) ball mill---making use of voltage ramp starting, reduce the abrasion of gear torque, and lessen maintenance work, it saves time and expenses also.
(3) fan---making use of soft starter instead of traditional motor starters, reduces the belt abrasion and mechanical shock, saving the cost of maintenance.
(4) compressor---making use of limiting current to achieve a smooth start, reduce motor heating, and extend the service life.
(5) crusher---making use of motor shaft lock protection and rapid protection against mechanical failure or obstruction to cause motor overheating and burnt.
(6) conveying machinery---making use of soft starting and preset low speed running, to achieve start process smoothly and gradually, avoiding product shifting and liquid overflow.