Siemens SINAMICS S120 Manual page 316

Diagnostics
8.4 LEDs on the CBE20 Communication Board
Table 8- 8 Meaning of the Sync and Fault LEDs on the CBE20
LED Color
Fault –
Red
Sync –
Green
Table 8- 9 Meaning of the OPT LED on the Control Unit
LED Color
OPT –
Green
Red
Orange
314
State Description
Off If the link port LED is green:
The CBE20 is operating error-free, and data is being exchanged with the configured
IO controller.
Flashing - The watchdog timer has elapsed.
light - Communication has been interrupted.
- The IP address is incorrect.
- Incorrect or missing configuration.
- Incorrect parameter assignment.
- Incorrect or missing device name.
- IO controller not present/switched off but Ethernet connection present.
- Other CBE20 errors.
Steady CBE20 bus error
light - No physical connection to a subnet/switch.
- Incorrect transmission rate.
- Full-duplex transmission is not activated.
Off If the link port LED is green:
Control Unit task system is not synchronized with the IRT clock. An internal substitute
clock is generated.
Flashing Control unit task system has synchronized with the IRT clock and data is being ex-
light changed.
Steady Task system and MC-PLL have synchronized with the IRT clock.
light
State Description, cause
OFF Electronics power supply is missing or outside permissible tolerance range.
The CBE20 is defective or not inserted.
Steady CBE20 is ready and cyclic communication is taking place.
light
Flashing CBE20 is ready but cyclic communication is not running.
light Possible causes:
0.5 Hz - Communication is being established.
-At least one fault is present.
Steady Cyclic communication via PROFINET has not yet been established. However, acyclic
light communication is possible. SINAMICS is waiting for a parameterization/configuration
telegram.
Flashing The firmware download to the CBE20 has failed.
light Possible causes:
0.5 Hz - The memory card of the Control Unit is faulty.
- The CBE20 is out of order.
The CBE20 cannot be used in this state.
Flashing Communication between the Control Unit and the CBE20 is faulty.
light 2 Hz Possible causes:
- The CBE20 was removed following power-up.
- The CBE20 is defective.
Flashing Firmware is being updated.
light
0.5 Hz
Cabinet Modules liquid cooled
Equipment Manual, 04/2020, A5E37067587A