Siemens SINAMICS S120 Manual page 190

Control Units
6.2 Control Unit CU310 DP (PROFIBUS)
LED Color
Orange
OUT>5 V -
Orange
MOD -
190
Status
Flashing Firmware CRC error.
2 Hz
off Electronics power supply is missing or outside
permissible tolerance range.
Power supply v5 V
Continuous Electronics power supply for measuring system
available.
Power supply >5 V.
Important:
Make sure that the connected encoder can be
operated with a 24 V power supply. If an encoder
that is designed for a 5 V supply is operated with a
24 V supply, this can destroy the encoder
electronics.
off Reserved
Description, cause
Manual, (GH6), 07/2007 Edition, 6SL3097-2AL00-0BP2
Remedy
Make sure that the
CompactFlash card
has been inserted
properly.
Replace the
CompactFlash Card.
Replace Control Unit.
Carry-out a POWER
ON.
-
-
-
AC Drive