NORD Drivesystems BU0590 - Manual (Page 12)

PROFINET bus module for NORD frequency inverters SK 5xxE
12 Subject to technical amendments BU 0590 GB-0312
DS
Green LED
DE
Red LED
Meaning
Off Off The technology unit does not have a power supply
Off Flashing 1...7x
Cycle 0.25sec
Pause 1s
The technology unit has a fatal system error
Flashing
Cycle 0.50 sec
Off Technology unit OK but no FI (frequency inverter) detected
Causes  The FI has no power supply or the technology unit is not
correctly plugged in
On Flashing 1x
Cycle 0.25sec
The FI is in an error condition
On Off Technology unit OK and FI detected
Table 7 Description of the DS and DE LEDs