Product Overview

The Danfoss 195N2191 (VLT2980PT4B20) is a high-capacity frequency converter from the VLT 2900 series, designed to manage high-power motor control in demanding industrial environments. This drive is optimized for heavy-duty applications such as large centrifugal pumps, high-inertia conveyors, and industrial mixers that require consistent torque regulation and long-term reliability. By modulating motor frequency and voltage, the 195N2191 reduces mechanical wear and lowers energy consumption, serving as a critical asset in maintaining high uptime and operational efficiency in industrial manufacturing facilities.

Technical Configuration

The 195N2191 utilizes a proven architecture focused on durability and ease of integration into existing automation infrastructures.

• Hardware Architecture: Engineered for 3-phase 380 - 480 VAC supply inputs, the unit is constructed for high-load performance. Its chassis is designed for cabinet mounting, balancing power density with the robust thermal management required for high-kW applications.
• Operational Control: Featuring VVC+ (Voltage Vector Control) technology, the drive ensures stable performance under varying load conditions, protecting the system against common electrical faults such as phase loss and thermal overloads.
• System Protection: The integrated design includes robust circuitry to safeguard both the drive and the connected motor, ensuring the system remains protected even during rapid acceleration or deceleration cycles.

Technical Specifications

FAQs

Is this drive suitable for retrofit applications in legacy control panels?

Yes, the VLT 2900 series is a standard choice for retrofitting older installations. However, due to its size and weight, ensure the control panel's structural integrity is sufficient for a 17 kg device and verify that existing cabling complies with the power requirements of this unit.

Does this model include braking functionality?

The "B" designation in the model string signifies an integrated brake chopper, which is essential for applications requiring controlled deceleration of high-inertia loads. An external braking resistor must be sized appropriately based on your specific duty cycle.

How do I ensure the drive remains cool during continuous operation?

Due to its high power rating, the 195N2191 generates significant heat. It must be installed in a vertical orientation with at least 150 mm of clearance above and below the drive to facilitate proper airflow. In enclosed cabinets, forced-air ventilation is mandatory to prevent thermal derating.

Engineering Guidelines and Best Practices

• Cable Shielding: To comply with electromagnetic compatibility (EMC) standards and minimize interference with control signals, always use shielded motor cables. Terminate the shield at both the drive housing and the motor terminal box using 360-degree metallic clamps.
• Maintenance: Regularly inspect the cooling fan and heatsink for dust or particulate accumulation. A clean airflow path is essential for the longevity of the drive's internal components.
• Safety: Before performing any maintenance, isolate the power supply and ensure the DC-link capacitor bank has fully discharged—typically verified by the internal status LEDs extinguishing.