Product Overview

The Danfoss 136N8926 (FC-051PK37T4E20HXXXCXXXSXXX) VLT Micro Drive FC 51 represents a highly compact and reliable variable frequency drive engineered for precision motor control in demanding industrial environments. Designed for efficiency in sectors such as water treatment, HVAC systems, food and beverage processing, and material handling, this drive minimizes operational downtime through its robust hardware design and integrated diagnostic capabilities. The 136N8926 model offers a power rating of 0.37 kW (0.50 HP) and is optimized for three-phase 380-480 VAC supply voltages, ensuring seamless integration into existing plant infrastructure where space-saving footprint and high performance are mandatory requirements.

Suffix Breakdown

The catalog number FC-051PK37T4E20HXXXCXXXSXXX is structured to define the hardware configuration and functional capabilities of this specific unit:

• FC-051: Indicates the VLT Micro Drive FC 51 series.
• PK37: Defines the power rating as 0.37 kW / 0.50 HP.
• T4: Specifies a three-phase mains voltage range of 380-480 VAC.
• E20: Denotes the IP20 / Chassis enclosure rating, suitable for control cabinet mounting.
• HX: Confirms the drive is configured without an integrated RFI filter.
• B: Integrated brake chopper for dynamic braking applications.
• X: No Local Control Panel (LCP) included.
• C: Coated PCB for enhanced resistance to harsh or humid environments.
• X: No additional mains options or specialized adapters selected.
• SXXX: Standard latest release firmware.

Technical Specifications

FAQs

What are the primary differences between this drive and legacy Danfoss models?

The FC 51 series is specifically optimized for compactness and cost-effectiveness in small-scale applications, offering superior VVC plus control compared to traditional V/Hz drives while maintaining full backward compatibility in logic signaling.

Is it possible to operate this unit in temperatures below 0 deg C?

Yes, the drive can operate at reduced performance down to -10 deg C, provided that proper ventilation and de-rating protocols are applied according to the installation manual.

Does this model include a built-in RFI filter?

No, the H-suffix in the configuration indicates that this specific unit is provided without an integrated RFI filter.

What is the logic signaling voltage level for the control terminals?

The unit supports both PNP and NPN logic levels with a signal range of 0 - 24 VDC.

Installation and Operational Guidelines

• Thermal Management: Ensure a minimum clearance of 100 mm above and below the drive to facilitate adequate airflow. In closed cabinet installations, forced ventilation is mandatory if the ambient temperature exceeds 40 deg C to ensure component longevity.
• Wiring and Shielding: To comply with electromagnetic compatibility standards and prevent signal noise interference, use shielded motor cables. The cable shield must be connected to the metal chassis of the drive using the provided cable clamps for a 360-degree connection.
• Safety Precaution: Always disconnect all power sources and wait for the DC bus capacitors to discharge (minimum 4 minutes) before attempting any wiring modifications or terminal adjustments. Ensure the drive is grounded properly according to local electrical codes to prevent potential shock hazards or equipment damage.