NORD Drivesystems BU0020 - Manual (Page 36)

PROFIBUS DP – Supplementary manual options for NORD - Frequency Inverters
36 BU 0020 GB-2612
2.3.7 Installation of the SK TU2 technology unit
WARNING
Modules must not be inserted or removed unless the device is free of voltage. The slots
may only be used for the intended modules. Installation remote from the frequency inverter
is not possible. It must be connected directly to the frequency inverter.
Failure to comply with this may result in an electric shock, which my cause serious injury
and the destruction of the frequency inverter and the module.
Installing the technology unit
1. Switch off the mains voltage,
observe the waiting period.
2. Unscrew the 6 fastening screws of
the blind plate land remove the
blind plate (Fig.1).
3. Attach the PE connection on the
inside of the technology unit which is
being installed (Fig. 2). Fit the seal
together with the technology unit
on the surface of the frequency
inverter. Ensure that the connector
strip makes 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) and with the torque
stated in the table.
Screw 4 Screw 3
Screw 2 Screw 1
Screw 6 Screw 5
Fig. 1
Fig. 2
Frequency inverter size Screw size Tightening torque
Size 1
M4 x 8 1.5Nm ± 20%
Size 2
ATTENTION
Note the earthing cable!
Make sure the earthing line is plugged into the plate of the standard device and each
technology unit. This cable must be connected when installing the technology unit to
ensure it is fully earthed. Operation is not permitted if there is no secure PE connection to
the frequency inverter and to the technology unit!