2 Assembly and installation
BU 0250 en-3021 31
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2.2.2 Configuration variants
The field distribution frequency inverter is designed so that it can be configured according to the
individual requirements of the drive application. Because of this, extensive interfaces are provided on
the FI, which are exclusively implemented in the form of plug connectors. As with the equipment of the
device, the arrangement of these interfaces also depends on the configuration of the FI and therefore
differs greatly. Precisely one type of option can be selected for each option slot.
SK CU4- optional modules are used for the functional extension of the FI, for example with additional
IOs or connection to a field bus system. Communication between this module and the inverter is
implemented via the system bus. Via the option slots Z1 to Z4 the functions which are required by the
customer are connected to the relevant M12 plug connectors.
The following tables illustrate which features can typically be combined and what influence these have
on the relevant option slots.
For the use of initiators or actuators, the associated parameters and the relevant factory settings can
be read out.
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2.2.2.1 Configurable options
The following integrated features can be configured. Selection of the options must be made when the
frequency inverter is ordered. Subsequent changes to the configuration are not possible.
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Actuator-sensor interface with “AS-i” connector option
Actuator-sensor interface with “ASS” connector option
Actuator-sensor interface with “AUX” connector option
Actuator-sensor interface with “AXS” connector option
Integrated braking resistor
Integrated brake rectifier for controlling a 205 V DC brake
Plug-in EEPROM for additional data backup
Heat sink with attached fan (only for devices < 2.2 kW)
Integrated brake rectifier for controlling a 180 V DC brake
Integrated 24 V power supply
Internal STO input The digital output of an integrated fail-safe module (e.g. SK CU4-PNS) is
connected to this input in order to trigger the function “Safe Torque Switch-off” (STO).
With the aid of the -TIDIO option, the digital IOs of the frequency inverter are connected to the
corresponding IOs of an SK CU4- installed in the FI.
If the frequency inverter is equipped with a maintenance switch, the auxiliary contact of the
maintenance switch (if present) can be integrated into the frequency inverter and evaluated
(maintenance switch “Switch setting ON / OFF).
RS232/RS485 interface: USB port in place of the RJ12 port.
Note: Parameter boxes cannot be connected to the USB port. In this case parameterisation and
diagnosis is only possible via a PC with NORDCON software.
As standard, frequency inverters with powers > 1.5 kW are equipped with an attached fan. The equipment code (-FANO) is then not
explicitly stated in the type code.
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