VLT 2975 (VLT2975PT4B20) Danfoss Frequency Converter

Product Overview

The 195N2198 (195N2198) is a robust VLT 2900 series frequency converter, specifically the VLT 2975 model, engineered for high-performance motor control in automated production lines. In heavy-duty industrial applications such as conveyor synchronization, packaging machinery, and centrifugal pumps, this drive delivers precise torque and speed regulation. Designed to maximize cabinet space and minimize thermal load, the VLT2975PT4B20 ensures consistent operation under varying load conditions. Its integration into a control architecture is a strategic move to enhance energy efficiency and reduce mechanical wear on motor-driven systems, thereby securing the long-term reliability of the production floor.

Technical Configuration

The hardware profile of the 195N2198 is optimized for reliability and high-speed processing in 400 V industrial networks.

• Power Logic: As a VLT 2975 model, it is designed for a power rating typically suited for mid-range industrial loads, providing the necessary current to drive three-phase asynchronous motors.

• Mains Integration: The "T4" designation indicates compatibility with three-phase 380-480 VAC input, covering the majority of global industrial power standards.

• Protection Architecture: The "B20" code signifies an IP20 protection rating, making it ideal for installation within clean, dry control panels where centralized airflow can be managed.

• Control Performance: Features advanced motor control algorithms that allow for high dynamic response and stable low-speed torque, essential for precision positioning and startup under load.

Technical Specifications

Technical FAQs

Can the 195N2198 be mounted side-by-side without clearance?

The VLT 2900 series supports "bookstyle" mounting; however, because the VLT 2975 generates significant heat during full-load operation, a minimum horizontal gap or forced enclosure ventilation is recommended to prevent thermal tripping during peak ambient temperatures.

How do I restore the drive to factory settings?

The unit can be reset through the LCP (Local Control Panel) by selecting the specialized initialization parameter. This is a critical step when repurposing a drive for a different motor application to ensure no legacy PID or limit settings interfere with the new process.

What is the maximum cable length supported for motor connections?

For unshielded cables, the limit is typically 50 meters, while shielded cables (required for EMC compliance) should not exceed 25-50 meters without an output filter to prevent high-frequency voltage spikes from damaging the motor insulation.

Engineering & Installation Guide

• EMC Shielding Protocol: To ensure compliance with industrial emission standards, use shielded motor cables. The shield must be connected to the metal backplate of the cabinet using a high-frequency decoupling clamp. Avoid "pigtails" at the ground terminal, as they act as antennas for high-frequency noise that can interfere with sensitive PLC signals.

• Input Protection: Install high-speed semiconductor fuses or a dedicated motor circuit breaker upstream of the 195N2198. This protects the drive's internal IGBTs from catastrophic failure in the event of a short circuit on the motor side.

• Harmonic Mitigation: In installations with multiple drives, consider the total harmonic distortion (THD). If the transformer is near capacity, adding an external AC line reactor can significantly improve the power factor and reduce the heat load on the input transformers.