Introduction of Sunland inverter

1. Obtain accurate motor parameters from low to high parameters at different frequencies, and establish motor models of corresponding frequency bands in different frequency segments, so that the inverter can control the motor from low to high.

2. V/F control

(1) Able to select 15 pre-set V/F curves suitable for use;

(2) Any V/F curve can also be set;

(3) The 15 types of V/F curves can be summarized into the following types:

1) Constant torque characteristics: it is a general use of curves, like a linear conveyor belt, and a constant torque application place that has nothing to do with speed;

2) Decreasing torque characteristics: such curves are used in load situations where the speed is 2 power-related like fans and water pumps;

3) High starting torque: the wiring interval between the inverter and the motor is long (about 100m or more), and the output torque is required to be large (elevator load) when starting, and an AC reactor is inserted in the input or output of the inverter, and the motor below the motor is used to run with a larger ratio;

4) Constant output power operation: It is the curve of the frequency above 50Hz to make it run, and the frequency above 50Hz is the constant voltage.

Introduction of Sunland inverter

3. Two sets of motor parameters

Able to set two sets of intact motor parameters independently, and can use multi-function external terminals to select motors,

It has a variety of protection functions such as over-current, over-voltage, over-temperature, over-load and under-voltage. When a fault occurs, the inverter will immediately alarm and jump away, the corresponding fault type will be displayed on the LED monitor, and the motor will automatically stop rolling. When the fault is eliminated, press the STOP key or enter the RST reset command of the control circuit terminal to release the alarm jump state. Overvoltage: 1. Fault code: E002 (overvoltage when accelerating), E003 (overvoltage at constant speed), E00A (overvoltage when stopping), E00B (overvoltage when decelerating) 2. Possible causes: (1) The input voltage is abnormal; (2) The deceleration time is too short; (3) The selection of braking equipment is not suitable; (4) The load moment of inertia is too large. 3. Solution: (1) Check the input power supply; (2) Set the deceleration time from the beginning; (3) Select braking equipment from scratch; (4) Reduce the moment of inertia. Undervoltage: 1. Fault code: E0012, or cause: (1) The input voltage is abnormal; (2) There are large-capacity loads running on the same line; (3) Internal faults of the inverter; 3. Solution: (1) Check the input power supply; (2) reduce the line load capacity; (3) Contact the inverter repairer, dealer or manufacturer. Overcurrent: 1. Fault code: E004 (overcurrent when accelerating), E005 (overcurrent at constant speed), E006 (overcurrent when decelerating) 2. Possible reasons: (1) Short circuit between motor connection terminals; (2) Sudden load change; (3) The acceleration time is too short; (4) Motor stalling; (5) Internal defects of the inverter; 3. Solution: (1) Check the output line and load; (2) reduce the line load capacity;

Introduction of Sunland inverter

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