Siemens SINAMICS S120 - Page 337

Diagnostics
7.4 LEDs on the CBE20 Communication Board
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A
337
Table 7- 9 Meaning of the OPT LED on the Control Unit
LED
Color
Status
Description, cause
Remedy
OPT – OFF Electronics power supply is missing or outside the permissi-
ble tolerance range.
Communication Board either defective or not inserted.
–
Green Continu-
ous light
Communication Board is ready and cyclic communication is
taking place.
–
Flashing
0.5 Hz
The Communication Board is ready, but cyclic communica-
tions is not running.
Possible causes:
• At least one fault is present.
• Communication is being established.
–
Red Continu-
ous light
Cyclic communication via PROFINET has not yet been
established. However, acyclic communication is possible.
SINAMICS is waiting for a parameter assign-
ment/configuration message frame.
–
Flashing
0.5 Hz
The firmware update into the CBE20 has been completed
with an error.
Possible causes:
• The CBE20 is defective.
• The memory card for the control unit is defective.
In this state, the CBE20 cannot be used.
–
Flashing
2 Hz
There is a communication error between the Control Unit
and the CBE20.
Possible causes:
• The board was removed following power-up.
• The board is defective.
Correctly insert the
board, if required,
replace.
Orange Flashing
0.5 Hz
Firmware is being updated. –