Manual

1 General
BU 0180 GB-0914 Pre-series version 17
1.7 Version with protection class IP55 / IP66
The frequency inverters and additional modules are available in protection classes IP55 (standard) or
IP66 (optional). The protection class IP66 must always be stated when ordering!
There are no restrictions or differences to the scope of functions in either protection class. In order to differ-
entiate the protection classes, modules with protection class IP66 are given an extra “-C” (coated  coated
PCBs) in their type designation.
e.g. SK 180E-750-340-B-C
IP55 version:
The IP55 version of the external frequency inverter is the standard version. Both versions (motor-mounted,
installed on the motor or wall mounted on the wall bracket) are available. In addition, all adapter units,
technology units and customer units are available for this design.
IP66 version:
In contrast to the IP55 version the IP66 version is a modified option. Both versions (motor-integrated, close
to motor) are also available. The modules available to the IP66 design (adapter units, technology units and
customer units) have the same functionalities as the corresponding IP55 design modules.
NOTE
The modules for the IP66 design are identified by an additional "-C" and are modified
according to the following special measures!
Special measures:
impregnated PCBs,
Powder coating RAL 9006 (white aluminium) for housing
Low pressure test
NOTE
For all versions, care must be taken that the cable and the cable gland are carefully
matched. Wherever possible, the cables should be inserted so that water is deflected away
from the device (if necessary use loops). This is essential to ensure that the required
protection class is maintained.