Supplementary Manual DeviceNet for NORDAC SK 200E
30 Subject to technical amendments BU 0280 GB
3.1.2 Signal status LEDs
This manual only describes the LED signal statuses of the DeviceNet modules. Information for the frequency
inverter LEDs (SK 200E) can be found in the relevant manual (BU0200).
3.1.2.1 Module-specific displays
The status of the technology unit or the system bus is indicated by the LEDs DS and DE.
LED (green)
DS
Device State
LED (red)
DE
Device Error
Significance
... ... Slow flashing = 2Hz (0.5s cycle)
… Rapid flashing= 4Hz (0.25s cycle)
OFF OFF Technology unit not ready, no control voltage
ON
OFF Technology unit ready, no error, at least one frequency inverter is
communicating via the system bus
ON
Flashing 0.25s
Technology unit ready, however
one or more of the connected frequency inverters has a fault status
(see frequency inverter manual)
Flashing 0.5s OFF Technology unit ready and at least one further subscriber is connected
to the system bus, but
No frequency inverter on the system bus (or connection interrupted)
Address error for one or more system bus subscribers
Flashing 0.5s Flashing 0.25s
Flash interval
1 x - 1s pause
System bus is in status "Bus Warning"
Communication on system bus interrupted or
No other subscriber present on the system bus
Flashing 0.5s Flashing 0.25s
Flash interval
2 x - 1s pause
System bus is in status "Bus off" or
The system bus 24V power supply was interrupted during operation
Flashing 0.5s Flashing 0.25s
Flash interval
3 x - 1s pause
No system bus 24V power supply
(system bus is in status "Bus off")
Flashing 0.5s Flashing 0.25s
Flash interval
4 x - 1s pause
technology unit error present
Details: under parameter P170 or P173
OFF Flashing 0.25s
Flash interval
1…7
- 1s pause
System error, internal program sequence interrupted
EMC interference (observe wiring guidelines!)
Module faulty
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