NORDAC LINK (SK 250E-FDS ... SK 280E-FDS) – Users Manual for Frequency Inverters as Field Distributors
62 BU 0250 en-3021
4 Commissioning
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Unexpected movement
Connection of the supply voltage may directly or indirectly set the drive unit into motion. This can
cause unexpected movement of the drive and the attached machine, which may result in serious or
fatal injuries and/or material damage. Possible causes of unexpected movements are e.g.:
– Parameterisation of an "automatic start"
– Incorrect parameterisation
– Control of the device with an enabling signal from a higher level control unit (via IO or bus
signals)
– Incorrect motor data
– Incorrect encoder connection
– Release of a mechanical holding brake
– External influences such as gravity or other kinetic energy which acts on the drive unit
– In IT networks: Earth fault (short circuit to earth)
• To avoid any resulting hazard the drive or drive chain must b
e secured against unexpected
movements (mechanical blocking and/or decoupling, provision of protection against falling, etc.) In
addition, it must be ensured that there are no persons within the area of action and the danger
area of the system.
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4.1 Starting up the device
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To establish basic operation capability, after the mechanical installation of the device on a suitable
wall, the electrical connections must be made ( Section 2.3.2 "Electrical connection of power unit").
For devices without an integrated 24 V DC mains unit (option "integrated mains unit": "HVS") it is also
essential for the FI to be provided with a 24 V DC control voltage.
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Before recommissioning it must be ensured that the device is in its factory settings (P523).
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Functional adaptation to the application is carried out by setting the parameters of the FI. Control and
parameterisation units (SK CSX-3H or SK PAR-3H) or the NORD CON PC software are available for
this. The parameter settings are saved in the internal EEPROM of the frequency inverter.
The parameters are pre-set with typical values (factory settings). To establish basic operating
capability, typically only the correct motor data (P200 etc.) and if necessary the selection of the
operating mode (P300 etc.) need to be parameterised.
Individual adaptations to the drive application, communication settings for other devices or a control
unit, as well as optimisation of the operating characteristics must also be subsequently carried out by
parameterisation. ( Section 5 "Parameter")
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