Catalog

Description

55 – 800 kW

1140 V

The converter of MFC810 series is designed for controlling induction motors with a rated voltage of 1000/1140 V. Its modular design, three-level inverter topology, and liquid cooling system allow for the installation of converters from this series in areas with limited room. The inverter consists of three independent power modules (one for each phase), a common rectifier circuit, and a separate control module. The enclosure is delivered after discussion with the customer.

Specifications:

• Input voltage: 3 x 1140, 45-66 Hz
• Output: 0-400 Hz, 3 x 0-1140 V
• Control:

– scalar U/f (linear/quadratic);

– vector (with/without a sensor).

• Indication and control panel with a detachable LCD display
• Built-in PLC controller
• Built-in winding calculator
• Built-in controller for groups of pumps or fans
• PID controller
• RS232/RS485 built-in communication module (MODBUS)
• Option of control over operation and parameter settings via communication channel
• Programmable constant speeds
• Motor potentiometer function
• Option of direct connection of the incremental encoder (5V signal)
• Elimination of programmable resonance frequency bands
• Specific shapes and slopes of the speed setting  characteristics (linear, “S” curve)
• Torque control capability
• Motor parameter identification

Programmable Control Structure:

– switchable control options (A, B);

– speed setting (control panel, analog input, PID controller, motor potentiometer, PLC block);

– start/stop (control panel, digital inputs, PLC block);

– programmable digital inputs: start/stop, direction, operation lock, external fault, fault rectification;

– programmable digital outputs: ready, operating, fault, warning, radiator temperature exceeded, set or maximum speed reached, current limit reached, PLC block output;

– programmable analog outputs: frequency, rotation speed, output current, output voltage, load level, PLC block output.

• Operational time measuring
• Real-time clock (optional)
• Locking and diagnostic system
• Keyboard protection with access control system