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Alarms, faults and system messages
9.1 Operating states indicated on LEDs
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
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Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
9.1
Operating states indicated on LEDs
The LED RDY (Ready) is temporarily orange after the power supply voltage is switched-on.
As soon as the color of the LED RDY changes to either red or green, the LEDs signal the
inverter state.
Signal states of the LED
In addition to the signal states "on" and "off" there are two different flashing frequencies:
6ORZIODVKLQJ
4XLFNIODVKLQJ
V
Table 9- 1
Inverter diagnostics
LED
Explanation
RDY
BF
GREEN - on
---
There is presently no fault
GREEN - slow
---
Commissioning or reset to factory settings
RED - fast
---
There is presently a fault
RED - fast
RED - fast
Incorrect memory card
Table 9- 2
Communication diagnostics via RS485
LED BF
Explanation
On
Receive process data
RED - slow
Bus active - no process data
RED - fast
No bus activity
Table 9- 3
Communication diagnostics via PROFIBUS DP
LED BF
Explanation
off
Cyclic data exchange (or PROFIBUS not used, p2030 = 0)
RED - slow
Bus fault - configuration fault
RED - fast
Bus fault
- no data exchange
- baud rate search
- no connection
Summary of Contents for SINAMICS G120 CU230P-2
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