Water Pump Motor Control 15KW 3-Phases VFD Frequency Inverter AC Drive
Technical characteristics
Drive motor type:Ac asynchronous motor, Ac permanent magnet synchronous motor
Four control modes:PG vector control(FVC), PG-free vector control(SVC),
V / F control, Torque control
Speed control range:PG vector control(FVC)1:1000
PG- free vector control(SVC)1:200
V / F control 1:50
Speed control accuracy:PG vector control (FVC)±0.2%
PG- free vector control (SVC)±0.5%
Starting torque:PG vector control(FVC):180 % rated torque/0.01Hz
PG- free vector control (SVC)150% rated torque/0.25Hz
Torque control accuracy:PG vector control (FVC)±5%
PG- free vector control (SVC)±8%
Multi-motor switching: Two groups of motor parameters can realize the switching control of the two motors.
Motor overheating protection:Optional IO expansion card, analog A / 3 can accept input from the motor temperature sensor
Supports multiple encoders:Supports differential, open collector, uvw, rotary transformer, sine and cosine encoder
Torque limitation and control: the "excavator" feature, automatically limits the torque during operation to prevent frequent overcurrent trips. Closed-loop mode can realize torque control.
Product advantages
Extended Equipment Life and Reduced Maintenance
Single-speed starting methods start motors abruptly, subjecting the motor to a high starting torque and to current surges that are up to 10 times the full-load current. Variable speed drives, on the other hand, gradually ramp the motor up to operating speed to lessen mechanical and electrical stress, reducing maintenance and repair costs, and extending the life of the motor and the driven equipment.
Soft starts, or reduced-voltage soft starters (RVSS), are also able to step a motor up gradually, but drives can be programmed to ramp up the motor much more gradually and smoothly, and can operate the motor at less than full speed to decrease wear and tear. Variable speed drives can also run a motor in specialized patterns to further minimize mechanical and electrical stress. For example, an S-curve pattern can be applied to a conveyor application for smoother decel/accel control, which reduces the backlash that can occur when a conveyor is accelerating or decelerating.
Problems Caused by Full-Voltage Starters
At the instant of energization, the locked rotor (zero-speed) is about 600% of full-load running current This heavy current then drops off gradually as the load breaks loose, and the motor comes up to speed, but causes unacceptable voltage sag on the power system, adversely affecting other loads. It can also cause shock damage and long-term excessive wear on the motor. Using this starting method may force the utility to impose a limit on the size of motors you can use, since across-the-line starting causes problems upstream into the utility's system, creating problems for other customers. The switching surges of abruptly starting and stopping create stress on the motor insulation.
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Water Pump Motor Control 15KW VSD Pump Control 3 Phase VFD AC Drive Inverter Images
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