Johnson Controls VFD68CHH-2 Frequency Drive

The Johnson Controls VFD68CHH-2 is a high-performance Variable Frequency Drive engineered specifically for HVACR applications requiring precise motor speed control. Operating at 460 Vac with a 3 Hp (2.2 Kw) capacity, this unit is housed in a Nema 1 fan cooled enclosure to ensure thermal stability during continuous operation. As a direct replacement for the VFD66FAA-2 and VFD66FAA-2C, it facilitates a seamless retrofit for legacy Johnson Controls systems. This HVAC VFD utilizes advanced pulse width modulation (PWM) to optimize fan speed control and pump motor regulation, significantly improving system efficiency and reducing mechanical stress. Its robust design is built for the demanding conditions of commercial mechanical rooms, providing reliable power conversion and frequency modulation. Contractors can expect straightforward integration with existing control logic, ensuring that VFD68CHH-2 specifications meet the rigorous performance requirements of modern air handling and fluid management systems.

• Direct Retrofit Compatibility: Engineered as the specific drop-in replacement for the discontinued VFD66FAA-2 series, simplifying field upgrades.
• Enhanced Thermal Management: The Nema 1 enclosure features integrated fan cooling to maintain internal component integrity under high-load conditions.
• Precise Voltage Control: Optimized for 460V 3-phase motor applications, providing stable torque and speed adjustment across the entire frequency range.
• Reduced Mechanical Wear: Soft-start capabilities minimize inrush current and torque spikes, extending the service life of connected drive components.

Common Questions

Is the VFD68CHH-2 compatible with older VFD66 series installations?
Yes, this unit is the manufacturer-designated direct replacement for both the VFD66FAA-2 and VFD66FAA-2C, matching the electrical footprint and primary control parameters.

What are the environmental requirements for the Nema 1 enclosure?
The Nema 1 rating is intended for indoor use in environments free of excessive moisture and airborne contaminants. The integrated fan requires adequate clearance for proper airflow.

How do I configure the drive for fan vs. pump applications?
The VFD68CHH-2 features programmable parameters that allow for custom V/Hz curves, enabling technicians to tune the drive specifically for centrifugal fan loads or constant torque pump requirements.

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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.