NORD Drivesystems BU0300 - Manual (Page 35)

3.2 Technology unit overview
BU 0300 EN Subject to technical alterations 35
3.2.1 Mounting the technology unit
The mounting of the technology unit must be implemented as follows:
1. Switch off the mains voltage, observe the waiting period.
2. Undo the 6 fastening screws on the blind plate and remove the blind plate (see Fig. 1 on next page).
3. Attach the PE connection on the inside of the technology unit being mounted (see Fig. 2 on next page).
Fit the seal together with the technology unit on the surface of the frequency inverter. Ensure that the
multipoint connector has full contact.
4. Lightly tighten all 6 fastening screws.
5. Now tighten the 6 fastening screws in the specified sequence from 1 to 6 (see Fig. 1 on next page) and
with the torque given in the table.
Frequency inverter size Screw size Tightening torque
Size 1
M4 x 8 1.5Nm ± 20%
Size 2
Fig. 1: Technology unit fastening screws Fig. 2: PE connection on the technology unit
Screw 3 Screw 4
Screw 6
Screw 2 Screw 1
Screw 5
ATTENTION
Operation is not permitted if there is no secure PE connection to the frequency inverter and to the
technology unit!