VFD66 User Guide 11
Issue Number: 2 www.johnsoncontrols.com
Safety information Rating data
Mechanical
installation
Electrical
installation
De-rating
Keypad and
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Parameters Diagnostics
Technical
specifications
UL Listing
Observe the following the guidelines when mounting a VFD66 drive:
• Mount the VFD66 drive on a vertical surface with the heatsink fins oriented vertically
and the conduit holes facing down.
• Provide a minimum of 4 in. (102 mm) clearance around the heatsink.
• Ensure that output power wiring between the VFD66 drive and the motor does not
exceed 50m (165 ft).
Mount the VFD66 drive in a location protected from condensation, explosive vapours,
corrosive gas, water, and dust.
3.1 Accessing the interior
Remove the terminal access cover by removing the terminal cover screw (see Figure 3-
1) to access terminal blocks, ground connections, EMC filter link and MOV link (see
Figure 4-1, Figure 4-2, Figure 4-3 and Figure 4-4).
NEMA 1 enclosure
Follow the following steps to remove the terminal cover:
1. Remove the terminal cover screw and push upwards on the front of the cover.
2. Pull outward on the top of the terminal access cover.
Enclosure
The drive is intended to be mounted in an enclosure which prevents access except by
trained and authorized personnel, and which prevents the ingress of contamination. It is
designed for use in an environment classified as pollution degree 2 in accordance with
IEC 60664-1. This means that only dry, non-conducting contamination is acceptable.
The VFD66 drive can generate and dissipate significant heat. Mount the drive on a metal,
concrete or cinder block mounting surface. Mounting the VFD66 drive on surfaces made
of wood or other heat-sensitive material may result in damage to the mounting surface.
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