Table of Contents
Safety information
Introduction
5.8
Enclosing drive for high environmental protection
The standard drive is rated to IP20 pollution degree 2 (dry, non-conductive contamination only) (NEMA 1). However, it is possible to configure the
drive to achieve a higher IP rating at the rear of the heatsink when through-panel mounted.
This allows the front of the drive, along with various switchgear, to be housed in an IP55 (NEMA 12) enclosure with the heatsink protruding through
the panel to the external environment. Thus, the majority of the heat generated by the drive is dissipated outside the enclosure maintaining a reduced
temperature inside the enclosure. This also relies on a good seal being made between the heatsink and the rear of the enclosure using the gaskets
provided.
Figure 5-38 Example of high IP through-panel layout
The main gasket should be installed as shown in Figure 5-38. Any screws / bolts that are used for mounting should be installed with M8 flat nylon
washers to maintain a seal around the screw hole.
See Figure 5-39 on page 69, sealing clamps are supplied in the through panel mounting kit to aid compression of the gasket.
NOTE
The heatsink fans have conformal coated PCBs and have sealant at cable entry points. Dripping, splashing or sprayed water can impede the
operation of the fan, therefore if the environment is such that the fan may be subjected to more than occasional dripping or sprayed water while
operational, then suitable drip protection covers should be employed.
68
System
Product information
configuration
IP55 (NEMA 12)
enclosure
IP20
(NEMA1)
Gasket seal provides
IP55 rated barrier to
maintain enclosure
rating after drive is
fitted.
Mechanical
Electrical
Installation
Installation
Unidrive M / Unidrive HS Modular Installation Guide
Technical data
UL Information
Issue Number: 5
Table of Contents
