NORD Drivesystems BU0270 - Manual (Page 71)

8 Additional information
BU 0270 GB Subject to technical amendments 71
8.2.3.3 Assembly tools
The observance of the tightening torques for making plug connections is of vital importance. For M12 plug
connectors, the optimum torque is 0.6Nm.
Suitable assembly tools are commercially available.
Supplier Designation Part no.
MURR Elektronik M12 wrench set for M12 round connectors with calibrated
torque of 0.6Nm
7000-99102-0000000
Franz Binder GmbH M12 torque wrench for M12 round connectors with
calibrated torque of 0.6Nm
07-0079-000
NOTE
In order to ensure a secure, sealed and vibration-proof connection, connecting components
with hexagonal fittings should be used.
Special tools enable tightening to a defined torque (operational reliability).
8.3 System bus
With NORDAC inverter technology, units or modules communicate via a dedicated system bus. With the
introduction of the SK 200E frequency inverter series and the associated components SK CU4-… and
SK TU4-… functions and interfaces were implemented in this system bus, which allow users to make useful
adaptations without having detailed knowledge of the function of the bus system (data allocation / error
handling, etc.).
A decisive advantage is provided by the fact that the system bus is no longer restricted to a single inverter and
a directly connected module, but rather that up to 4 frequency inverters can jointly use a BUS interface (e.g.:
EtherCAT). This increases the number of possible participants on a field bus system (by a factor of 4) with
comparatively low investment costs.
The system bus address of the BUS modules (SK CU4-… and SK TU4-…) is set to "5". The system bus
address of the up to 4 frequency inverters which can be connected are set by means of DIP switches (see
manual BU 0200) on the relevant frequency inverter, optionally between 32 / 34 / 36 and 38, whereby no
address may be doubly assigned within a system bus system.
M12-
wrench