Programmable Frequency and Voltage Regulated Power Supply

1.Programmable Functions

• General Functions – allows setting of a set of voltage, frequency, time, and operating output parameters;
• Step-function feature – allows you to configure multiple sets (up to 30 sets) of step voltage, frequency, and duration; the system will then operate according to these configured steps; additionally, you can set the number of cycles and the cycle interval time;
• Gradient Function – allows you to configure multiple sets (up to 30 sets) of start voltage frequency, stop voltage frequency, start time, and operating time; the system will then automatically perform an output operation by adjusting the VF according to these settings;
• VF starting kinetic energy — For motor testing and high-power motor starting applications, a fixed-frequency variable voltage followed by variable frequency variable voltage mode can be configured to reduce the inrush current during startup;
• Special Curve Simulation – For complex voltage and frequency variations, the voltage-frequency curve can be configured within the system based on customer requirements or relevant test specifications.

2.Supports parallel redundancy functionality

• Supports dual-machine or multi-machine parallel expansion to increase system availability;
• Supports dual-machine redundant operation, thereby enhancing power supply reliability;
• The system supports independent operation with two or more units, as well as parallel expansion mode (for independent operation: each unit can set its frequency and voltage arbitrarily; for parallel operation).

3.Multi-purpose functionality

• Operates in standard three-phase output mode, providing a standard three-phase voltage with phase differences of 120° between each output phase;
• The device can also operate in single-phase mode; in this mode, the three single-phase output voltages, frequencies, and phases are identical. The three single-phase outputs can be connected in parallel externally to the power supply to function as a single-phase power source, thereby tripling the single-phase load capacity compared to traditional power supplies. The three-phase switching function requires only a single button press; no complex internal wiring adjustments are necessary. Additionally, the power supply features self-diagnostic and protection functions, effectively preventing output short circuits caused by erroneous switching between single-phase and three-phase modes;
• Three-phase separate control function: The frequency and output voltage of each individual phase can be adjusted independently; each of the three single-phase outputs can deliver different frequencies and voltages.

4.Three-phase phase angle adjustable function

• In the three-phase output mode, the phase angle of the three-phase output voltage can be adjusted over a range of 0–360° with an adjustment resolution of 1°;

5.RS232/RS485 communication interface

• Utilizing the MODBUS communication protocol, users can achieve centralized control via a computer or PLC to set operating commands for the inverter power supply, modify or read functional parameters, and retrieve the inverter power supply’s operating status and fault information.