NORDAC FLEX (SK 200E ... SK 235E) – Users Manual for Frequency Inverters
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BU 0200 en-US-4920
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3.2 Optional modules
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The device can be easily adapted to various requirements by using function-extending modules and
modules for display, control and parameterization.
Alphanumeric display and control modules (
Section 3.1 "Control and parameterization options ")
can be used for simple commissioning by changing parameters. For more complex tasks, connection
to a PC system can take place with the aid of the NORDCON parameterization software.
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3.2.1 Internal customer units SK CU4-… (installation of modules)
Internal customer units allow the scope of functionality of devices to be extended without changing the
size. The device provides one mounting slot for one appropriate option. If other optional modules are
required, use the external technology units for these (
Section 3.2.2 "External technology units
SK TU4-… (module attachment)").
Figure 22: internal customer units SK CU4 … (example)
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The bus interfaces require an external 24 V power supply and are therefore also ready for operation if
the device is not supplied with line voltage. Parameterization and diagnosis of the bus interface is
therefore possible independently from the variable frequency drive.
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