series soft starter overload, overcurrent and overheat protection water pump protector
1. Product features
Customized parameters can be directly selected through simple programming to apply load type
Three starting parameters are optional, which is convenient for one motor soft starter to start different motor loads
The startup detects the motor feedback voltage to achieve closed-loop control to ensure that the motor starts successfully under various working conditions and different loads
Three starting modes: Voltage ramp starting mode can get the maximum output torque. Constant current soft starting mode can limit the maximum starting current. Direct starting soft starting mode can directly start the motor soft starter
Programmable delay starting mode, programmable Chain control
No phase sequence requirements for the input power supply
Starting time and parking time can be modified digitally
Has a variety of protection functions: overcurrent, three-phase current imbalance, overheating, phase loss, Motor overload protection
Dynamic fault memory function, easy to find the cause of the fault
The maximum starting current and maximum operating current can be searched online
Fully dynamic control monitoring of the fieldbus starter, easy to assemble Net
Chinese character display function: C LCD screen displays various working condition parameters. There are text prompts in programming and fault conditions
2. Introduction to typical product applications
The water pump uses the soft stop function to alleviate the water hammer of the pump when it stops, saving the cost of system maintenance.
The ball mill uses a voltage ramp to start, reducing gear torque wear and maintenance workload, saving both time and expense.
The fan reduces belt wear and mechanical impact, saving maintenance costs.
The compressor uses current limiting to achieve smooth start, reduce motor heating and extend service life.
The belt conveyor achieves a smooth and gradual starting process through soft start, avoiding product displacement and liquid spillage.
3. Technical characteristics
． Main circuit working voltage: C/(~)
． Main circuit operating current:
． Main loop frequency: /([forbidden words])
． Control circuit power supply: C[forbidden word](.)
． Soft start rise time:~:
． Soft stop time:~
． Impact time: .~.
． Impact voltage: ~
． Current limiting multiple: .~.
． Initial voltage: ~
． Cooling method: natural cooling/air cooling (online operation)
． Communication method: R serial communication (bR/optional)
． Number of starts ≦ times/hour
4. Working principle
>
The control core of R
is a microprocessor. This microprocessor control system can start and protect the motor. The microprocessor performs phase angle trigger control on CR to reduce the voltage applied to the motor, and then smoothly increases the motor rotation by controlling the voltage and current applied to the motor. torque until the motor accelerates to full speed. This starting method can reduce the starting impulse current of the motor and reduce the impact on the power grid and the motor itself. At the same time, it also reduces the mechanical impact of the mechanical load device coupled to the motor to extend the service life of the equipment and reduce failures and shutdowns. >
R
It has five starting modes: current limited starting mode, voltage ramp starting mode, kick mode, current ramp starting mode, and voltage and current limiting double closed-loop starting. >
Voltage mode>
Used to determine the initial torque of the motor (when the frequency is constant, the motor torque is proportional to the square of the applied voltage). >
Setting range:. Current impact and mechanical impact need to be considered when adjusting. If set too high, the initial current impact and mechanical impact may be too high. In voltage mode, the current will change according to the load, but the maximum value is limited to times of the rated current, which can reduce the starting current by increasing the starting time. When the load is light or no-load, the starting process will be completed even if the set rise time is not reached due to the accelerated establishment of potential energy of the motor>
Current limiting start>
Confirm the motor The highest current allowed during starting. >
Setting range: [Motor rated current] Please consult the manufacturer for the extended range. When the setting value is higher, the motor will draw larger current from the main circuit and accelerate quickly. If the setting value is too low, the motor will still not be able to reach full speed after acceleration. Generally, it is appropriate to set it so that it does not stall. In order to make the starting current reach the limit value quickly, the starting time should not be set too long.
KLR1000 series soft starter overload, overcurrent and overheat protection water pump protector