Siemens SINAMICS S120 - Page 193

Diagnosis
Diagnostics using LEDs
6-193
E Siemens AG, 2004. All rights reserved
SINAMICS S120 Installation and Start-Up Manual, 12/04 Edition
Table 6-2 Control Unit 320 – description of the LEDs after booting, continued
LED RemedyDescription, causeStatusColor
– OFF
Cyclic communication has not (yet) taken place.
Note:
PROFIBUS is ready for communication when the
Control Unit is ready (see LED RDY).
-
DP1
(PROFIBUS
Continuous Cyclic communication is taking place. -
(PROFIBUS
cyclic
operation)
Green Flashing
0.5 Hz
Full cyclic communication is not yet taking place.
Possible causes:
S The master is not transmitting setpoints.
S No global control (GC) or master sign-of-life is
transmitted during isochronous operation.
-
Red Continuous Cyclic communication has been interrupted. Remedy fault
OPT
– OFF
Electronics power supply is missing or outside
permissible tolerance range.
Module is not ready.
Option board not installed or no associated drive
object has been created.
-
OPT
(OPTION)
Continuous Option board is ready. -
(OPTION)
Green Flashing
0.5 Hz
Depends on the option board used. -
Red Continuous
At least one fault is present in this module.
Option board not ready (e.g. after power-on).
Remedy and
acknowledge
fault
MOD
– OFF Reserved -
MOD
Green Continuous Reserved -