5 Parameter
BU 0155 en-3520 71
5 Parameter
Connection of the supply voltage may directly or indirectly set the drive unit into motion. This may
cause an unexpected movement of the drive unit and the connected machine. This unexpected
movement may cause severe or fatal injuries and/or material damage.
Unexpected movements may be due to several causes, e.g.
• Parameterisation of an “automatic starting”,
• Incorrect parameterisation,
• Control of the device with an enabling signal from a higher level control unit (via IO or bus signals),
• Incorrect motor data,
• Release of a mechanical holding brake,
• External influences such as gravity or other kinetic energy which acts on the drive unit.
To avoid any resulting hazard, secure the drive or drive chain against
(mechanical blocking and/or decoupling, provision of protection against falling, etc.). Ensure that there
are no persons within the area of action and the danger area of the system.
Unexpected movement due to changes in the parameterisation
Parameter changes become effective immediately. Under certain conditions, dangerous situations
may occur, even when the drive is in standstill. Functions such as P428 “Automatic starting” or P420
“Digit inputs” or the “Brake off” setting can put the drive in motion and put persons at risk due to
moving parts.
Therefore:
• Changes to parameter settings must only be made when the Motorstarter is not enabled.
• During parametrisation works, precautions must be taken to prevent unwanted drive movements
(e.g. lifting equipment plunging down). The danger area of the system must not be entered.
The relevant parameters for the device are described in the following. The parameters are accessed
using a parametrisation tool (e.g. NORDCON software or control and parametrisation unit, see also
( Section 3.2 "Control and parametrisation options ") and therefore makes it possible to adapt the
device to the drive task in the best possible way. Different device configurations can result in
dependencies for the relevant parameters.
The parameters can only be accessed if the control unit of the device is active.
Depending on the device configuration, the control voltage can be supplied via an optional plug
connector. As an alternative, the device may be equipped with a power supply unit (option: “-HVS”)
that generates the required 24 V DC control voltage by applying the mains voltage (see 2.3.2
"Electrical connection of power unit").
Connections and any priority circuits with the potentiometers (P1…) and the DIP switches (S1 and S2)
are described at the suitable positions and must be considered (P130).
Parameter changes have an immediate effect on the RAM memory only and are therefore volatile, To
secure these changes, a copy order (P550) must be triggered after the parameter adjustment. This
transfers the data to the permanent memory (flash memory) of the device.
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