NORD Drivesystems BU0570 - Manual (Page 8)

EtherCAT bus module for NORD frequency inverters SK 5xxE
8 Subject to technical amendments BU 0570 GB-0312
2 Modules
2.1 SK 5xxE frequency inverters
By the use of various modules for display, control and parameterisation, the SK 5xxE can be easily adapted
to various requirements.
Alphanumerical display and operating modules can be used for simple commissioning. For more complex
tasks, various connections to a PC or an automation system can be selected.
The technology unit (Technology Unit, SK TU3-…) is connected externally to the front of the frequency
inverter and is therefore easy to access and replace at any time.
In the delivery condition (without technology unit) 2 LEDs (green/red) are visible externally. These indicate
the actual device status.
The green LED indicates that the mains voltage is present and operational, while a flashing code that
increases in speed shows the degree of overload at the frequency inverter output.
The red LED signals actual error by flashing with a frequency which corresponds to the number code of the
error (Manual BU 0500 Section 6).
Fig. 2 Frequency inverters with SK TU3- optional modules (selection)
WARNING
NOTE
Modules should not be inserted or removed unless the device is free of voltage. The slots may
only be used for the intended modules.
Installation of a technology unit separate from the frequency inverter is not possible. It must be
connected directly to the frequency inverter.
LED
red/green