131L9771 Danfoss
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MPN: FC-102P2K2T4E20H2XGXXXXSXXXXAGBPCXXXXDX
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The Danfoss 131L9771 is part of the VLT FC 102 HVAC Drives series and supports a mains voltage of 380 to 480 VAC with three phase power. It features a graphical local control panel, has an IP20 protection level, and includes an integrated RFI filter for improved operation. This drive allows for normal cabinet mounting on A, B, and C frames and comes equipped with a LonWorks MCA 108 option and an MCB-105 relay card.
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Product Description:
The 131L9771 is an AC drive manufactured by Danfoss for the VLT FC 102 HVAC Drives series. Within building automation systems, it adjusts the speed of centrifugal fans, pumps, and compressors so that airflow, temperature, or pressure follows demand while reducing electrical consumption and mechanical wear. By matching motor speed to the actual load instead of running connected equipment at full output, the drive supports steadier process control in air-handling units, circulation loops, and similar HVAC installations. This type of variable-speed operation can also reduce throttling losses and lower mechanical stress on connected fan and pump assemblies.
This model is powered from a three-phase supply and accepts 380–480 VAC, a range that suits common low-voltage distribution networks used in commercial facilities. The enclosure has IP20 chassis protection, so the drive is intended for installation inside a ventilated control panel rather than in an exposed location. Option slot A carries the LonWorks MCA 108 interface, allowing the drive to communicate on a LonWorks building network, while slot B is fitted with a MCB-105 Relay Card for interlocks and status signaling. Input power is supplied through three line terminals because the unit uses three-phase power. Normal cabinet mounting across A, B, or C frames simplifies retrofits, and the drive has no brake chopper, so deceleration depends on the programmed ramp. The PCB is uncoated.
The local interface is a graphical local control panel that provides parameter access without external tools and lets the user review status information directly at the drive. Cable routing uses standard cable entries, and the unit has no secondary adaptation kit, no C0 or C1 motion options, and no D-slot accessory. Conducted emissions are limited by the built-in RFI filter, so extra line filtering is unnecessary for many installations. The drive is supplied with the latest standard software release, and the standard language pack is already loaded. On the network, the unit reports series identifier 102 and the VLT HVAC Drive product group code.
Frequently Asked Questions about 131L9771:
Q: What type of A Option communication interface does the 131L9771 VLT FC 102 HVAC Drive have?
A: This unit is equipped with a LonWorks MCA 108 card for A Option communication compatibility.
Q: What is the supported mains voltage for the Danfoss 131L9771 drive?
A: The 131L9771 operates with a mains voltage range of 380 - 480 VAC.
Q: What power phase does the Danfoss 131L9771 VLT FC 102 HVAC Drive use?
A: It features a three-phase power configuration for industrial applications.
Q: What type of control panel does the 131L9771 VLT FC 102 HVAC Drive come with?
A: This model includes a graphical Local Control Panel (LCP) for easier user interface and control.
Q: What level of environmental protection does the Danfoss 131L9771 provide?
A: The drive has an IP20 / Chassis protection level, making it suitable for mounting inside electrical cabinets.
