Johnson Controls VFD68BFD-2 Frequency Drive

The Johnson Controls VFD68BFD-2 is a robust variable frequency drive designed for precise HVAC fan speed control in single-phase input residential and light commercial applications. This 230 Vac, 1 HP (0.75 kW) unit features a NEMA 1 fan-cooled enclosure, ensuring reliable performance by maintaining optimal internal temperatures during high-torque operations. Engineered as a direct replacement for VFD66AAA-1 and VFD66AAA-2 models, the VFD68BFD-2 allows for seamless field retrofits without complex reconfiguration of existing mounting hardware. It utilizes advanced pulse width modulation (PWM) technology to vary motor speed based on 0-10 VDC or 4-20 mA control signals, significantly improving system efficiency and reducing mechanical stress on the compressor and fan motor. For technicians, the VFD68BFD-2 frequency drive provides a straightforward interface for setting minimum and maximum frequency limits, ensuring the system operates within safe parameters while maximizing energy savings and maintaining precise pressure or temperature setpoints.

• Direct Drop-in Replacement: Simplifies service calls by replacing obsolete VFD66AAA-1 and VFD66AAA-2 units with identical footprints and wiring logic.
• Enhanced Thermal Management: The integrated fan cooling within the NEMA 1 enclosure prevents overheating in high-duty cycle applications.
• Versatile Input Compatibility: Accepts standard industry analog signals, making it compatible with most building automation systems (BAS) and standalone controllers.
• Improved System Longevity: Soft-start capabilities reduce inrush current, protecting the motor windings and extending the lifecycle of the HVACR system components.

Can the VFD68BFD-2 be used with 460V motors?
No, this specific model is rated for 230 Vac input and output. For 460V applications, a different series unit must be specified to match the motor plaque voltage.

Is this drive suitable for outdoor mounting?
The VFD68BFD-2 features a NEMA 1 rating, which is intended for indoor use protection against dust. If installing outdoors, it must be housed within a secondary weather-proof enclosure.

How do I calibrate the speed range for my specific fan?
The drive includes onboard potentiometers or digital parameters to set the low-end and high-end hertz, allowing you to match the VFD performance to the specific CFM requirements of the air handler or condenser fan.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.