131L9871 Danfoss
Wake Industrial LLC is not an authorized distributor of this product.
MPN: FC-101P18KT4E20H4XXCXXXSXXXXAXBXCXXXXDX
The Danfoss 131L9871 is part of the VLT FC 101 HVAC Basic Drives series and offers a power rating of 18.5 kW, or 25 HP. This three-phase VLT HVAC Drive features a mains voltage range of 380 to 480 VAC, a coated PCB, and an IP20 protection level. It comes with an RFI class A1 (C2) filter and supports standard cable entries.
Internal Product Review
The 131L9871 is a Danfoss VLT FC 101 HVAC drive that stands out for stable motor control on 380 - 480 VAC three-phase power. Coated PCB construction and IP20/chassis protection support dependable cabinet installation in HVAC panels. The 25 HP rating makes the drive a strong fit for demanding fan and pump applications.
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Product Description:
The 131L9871 is an AC variable-frequency drive manufactured by Danfoss for the VLT FC 101 HVAC Basic Drives series. It regulates the speed of three-phase induction motors used with supply fans, exhaust fans, pumps, and similar equipment in building automation and light-industrial systems. Variable-speed operation allows the drive to adjust airflow or fluid flow according to demand without relying on mechanical throttling. This approach can reduce unnecessary motor operation when the connected equipment does not require full output.
This model delivers a continuous output of 18.5 kW for compatible motor loads. The input section accepts 380–480 VAC from a three-phase network, allowing direct connection to common low-voltage plant power systems without phase conversion. A built-in semiconductor bridge produces the variable-frequency output required to control motor speed. The drive does not include a brake chopper, so applications that require rapid stopping must handle regenerative energy through suitable external equipment. Motor terminals and control wiring are protected by an IP20 chassis enclosure intended for installation inside a ventilated panel. Electromagnetic interference is reduced by an integrated RFI class A1 (C2) filter designed for industrial environments. The printed circuit board has a protective conformal coating that improves resistance to moisture, dust, and airborne contaminants commonly found in HVAC installations.
Power and control cables are routed through standard cable entries on the underside of the chassis, helping organize wiring inside the panel. Because the drive is supplied with no local control panel, operating data and diagnostic information must be accessed through compatible remote tools or an external interface. The standard language pack provides parameter menus in commonly used languages for HVAC applications. The control arrangement supports remote speed references and system commands from building-automation equipment. Installation space must provide adequate ventilation around the chassis so internally generated heat can leave the enclosure. External protective devices and wiring should be selected for the connected motor, available mains supply, and operating conditions.
