Mechanical Installation 3-5
3.5.2 Flush Mounting (Form 22X)
Form 22X drives may be flush mounted to a subpanel inside an enclosure or directly to
an enclosure wall. The units require a cutout in the panel or enclosure wall to allow air to
vent out the back. Allow clearance behind the cutout for airflow as recommended in
Table 3-1. Mount the drives using at least six 5/16" (8 mm) bolts or studs. Rest the bottom
mounting slots on the bolts or studs while securing the top.
3.5.3 Flange Mounting
A drive may also be flange-mounted with its heat sink protruding through a cutout in the
enclosure wall. This allows heat to be dissipated outside the enclosure. A mounting
flange is provided with 1100, 1110, and 1130 drives, with Form 17N, 30, and 34 1105
drives, and with Form 17 1120 drives. It is available as a factory-installed option with
Form 12N 1105 and 1120 drives and Form 9N 1200 drives. Factory-installed mounting
adapters are also available for reusing existing cutouts when retrofitting certain units (see
Table 3-2). Allow the recommended clearance behind the heat sink and fans for airflow
(see Table 3-1). Certain low-power Form 13 models do not have finned heat sinks and
must be mounted flush with the surface.
Mount Form 9N, 12N, 13, 17, 17N, 17X, and 30 drives using #10 (5 mm) bolts or studs
with nuts. The number of bolts or studs required varies with the size of the drive. Form
22X drives use sixteen #10 (5 mm) studs through the holes in the heat sink flange. The
corner studs of each unit must pass through the console; others may be welded. Form 34,
34X, 48, and 48X drives have 1/4"-20 mounting studs protruding through both sides of
the heat sink that require (12) 5/16" (8 mm) mounting holes. Secure the unit across the top
and bottom using six additional 1/4" (6 mm) bolts with nuts. Refer to the flange-mounting
diagrams for hole locations and cutout dimensions. Retrofit adapters use the same hole
patterns as the drives they replace. Chassis units are designed to provide NEMA 4 (IP66)
integrity when flange-mounted inside a suitable NEMA 4 enclosure using the gasket
provided.
Table 3-2—Flange-Mounting Retrofit Adapters
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