Mechanical Installation 3-1
3 Mechanical Installation
3.1 Overview
Proper mechanical installation of the drive is essential for safe, reliable operation and to
simplify electrical wiring and maintenance. This chapter provides information and
instructions for determining the best mounting location, selecting an enclosure, planning
a layout, and installing the unit.
3.2 Forms
Drives are classified into twelve different forms according to their physical size and
construction. These forms correspond, for the most part, to different heat sink sizes and
sometimes to different box sizes or mounting methods. Refer to Table 3-3 through Table
3-8 near the end of this chapter to determine the form of a unit based upon its voltage,
torque, and power ratings.
3.3 Installation Site Considerations
It is important to chose a mounting location that protects the drive from harmful
environmental conditions while, at the same time, safeguarding personnel from the
dangerous voltages of the drive system.
3.3.1 Enclosure
A drive can be supplied either as an unmounted open chassis, an unmounted enclosed
unit, or mounted within a larger enclosure as part of a packaged drive system
incorporating additional components. Open-chassis (IP00) units must be mounted inside
an enclosure for safety. The integral enclosures provided with Form 9N, 12N, 13N, 17N,
and 17X drives provide NEMA 3R (IP23) protection and can be converted to NEMA 4
(IP66) using the solid gland plate provided with the enclosure. Form 13, 17, 22X, 30, 34,
34X, 48, and 48X enclosures provide NEMA 1 (IP20) protection. Both open-chassis and
enclosed versions of all models may be either foot- or flange-mounted.
Figure 3-1 through Figure 3-5 provide the physical dimensions and mechanical layouts of
the drives. Refer to these figures when planning your layout. For simplicity, only the
dimensions of enclosed drives are shown. Chassis units occupy approximately the same
space.
Attention
To provide protection against electrical shock, chassis units must be
mounted in an enclosure meeting at least the requirements of Protective
Type IP20 (or NEMA equivalent) according to EN60529 and with top
surfaces meeting at least the requirements of IP40 (or NEMA equivalent).
It is recommended that a key or tool be required to open the enclosure and
that enclosure doors be interlocked with the electrical supply disconnect.
To Next Page
Loading...
Need help?
General
