NORD Drivesystems BU0180 - Manual (Page 30)

SK 180E Manual for frequency inverters
30 Pre-series version BU 0180 GB-0914
2.6 Electrical connection
WARNING THE DEVICES MUST BE EARTHED.
Safe operation of the devices requires that is installed and commissioned by qualified personnel
in compliance with the instructions provided in this Manual.
In particular, the general and regional installation and safety regulations for work on high voltage
systems (e.g. VDE) must be complied with, as must the regulations concerning correct use of
tools and the use of personal protection equipment.
Dangerous voltages can be present at the motor connection terminals even when the inverter is
switched off. Always use insulated screwdrivers on these terminal fields!
Ensure that the input voltage source is not live before setting up or changing connections to the
unit.
Make sure that the inverter and motor are specified for the correct supply voltage.
NOTE: As with other signal cables, thermistor cables must be laid separately from the motor cables.
The housing cover must be removed from the SK 1x0E in order to make the electrical connections. Proceed
as follows:
1. Switch off the mains supply and if necessary check and observe the waiting period.
2. Loosen the 4 Allen screws (4 mm).
3. Carefully lift the housing cover vertically from off the housing box.
4. The electrical connections and the option slots are now freely accessible.
5. Replace the cover
6. Evenly tighten the Allen screws in a cross-wise direction (for tightening torques, please refer to
Section 2.1.3).