Mounting Brackets; Ip Rating (Ingress Protection) - Control Techniques Commander SK2202 Getting Started Manual

Safety Product Mechanical
Information Information Installation
3.3

Mounting brackets

Model
Surface
size
2
3
4
5 & 6
3.3.1 Fitting of the Commander SK mounting
brackets on size 4, 5 and 6
Commander SK size 4,5 and 6 use the same mounting brackets for
surface and through-panel mounting.
The mounting bracket has a long section and short section.
Figure 3-17 Size 4, 5 and 6 mounting bracket
Short section
Long section
The mounting bracket must be fitted in the correct orientation with the
long section inserted into or attached to the drive and the short section
attached to the backplate. Figure 3-18 shows the orientation of the
mounting bracket when the drive is surface mounted and through-panel
mounted.
Figure 3-18 Orientation of the size 4, 5 and 6 mounting bracket
Commander SK size 5 and 6 also requires two top mounting brackets
when the drive is surface mounted. The two brackets should be fitted to
the top of the drive as shown in Figure 3-19.
Commander SK Size 2 to 6 Getting Started Guide
Issue Number: 2
Electrical Keypad and
Installation Display
Through-panel
x2 x1
x2
x4
x4
x2
Long section
Short section
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Quick Start
Parameters
Commissioning
Figure 3-19 Location of top surface mounting brackets for size 5 and 6
Hole
size
6.5mm
(0.256in)
8.5mm
(0.335in)
The maximum torque setting for the screws into the drive chassis is
10Nm (7.4 lb ft).
3.4

IP Rating (Ingress Protection)

3.4.1 Commander SK size 2, 3 and 4
The Commander SK size 2, 3 and 4 is rated to IP20 pollution degree 2
(dry, non-conductive contamination only) and/or NEMA 1. However, it is
possible to configure the drive to achieve IP54 rating and/or NEMA 12 at
the rear of the heatsink for through-panel mounting (some current de-
rating is required for size 2).
This allows the front of the drive, along with various switchgear, to be
housed in an IP54 and/or 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
backplate using the gasket provided.
Figure 3-20 Example of IP54 and/or NEMA 12 rating layout
IP54 and/or NEMA 12
IP20
and/or
NEMA1
In order to achieve the high IP rating at the rear of the heatsink with
Commander SK size 2, it is necessary to seal a heatsink vent by fitting
the IP54 insert as shown in Figure 3-21 on page 26.
Diagnostics Options Parameter List
enclosure
Gasket
seal
UL Listing
Information
Drive with
IP54 insert
and IP54
fan fitted
25