Siemens SINAMICS S120 - Page 192

Diagnosis
Diagnostics using LEDs
6-192
E Siemens AG, 2004. All rights reserved
SINAMICS S120 Installation and Start-Up Manual, 12/04 Edition
LEDs after the Control Unit has booted
Table 6-2 Control Unit 320 – description of the LEDs after booting
LED
Color Status Description, cause Remedy
– OFF
Electronics power supply is missing or outside
permissible tolerance range.
-
G
Continuous
The module is ready for operation and cyclic
DRIVE-CLiQ communication is taking place.
-
Green
Flashing
2 Hz
Writing to CompactFlash card. -
Continuous At least one fault is present in this module.
Remedy and
acknowledge
fault
Red
Flashing
0.5 Hz
Boot error
Check whether
CompactFlash
card is plugged
in correctly
Replace
CompactFlash
card
Replace
Control Unit
POWER ON
RDY
Green/
Red
Flashing
0.5 Hz
Control Unit 320 is ready.
No software licenses.
Obtain licenses
(READY)
Continuous
DRIVE-CLiQ communication is being
established.
-
Orange
Flashing
0.5 Hz
Unable to load firmware to RAM.
Check whether
CompactFlash
card is plugged
in correctly
Replace
CompactFlash
card
Replace
Control Unit
POWER ON
Flashing
2 Hz
Firmware checksum error (CRC error).
Check whether
CompactFlash
card is plugged
in correctly
Replace
CompactFlash
card
Replace
Control Unit
POWER ON