Control Via Profibus; Monitoring: Telegram Failure - Siemens SINAMICS DCM Operating Instructions Manual

Descriptions of functions
10.2 PROFIBUS
10.2.3

Control via PROFIBUS

"DP1 (PROFIBUS)" diagnostics LED
The PROFIBUS diagnostics LED is located on the Control Unit (CUD). It can be seen when
you remove the front cover of the SINAMICS DC MASTER. The table below outlines the
different meanings its states have.
Table 10- 4 Description of the LED
Color State
----- Off
Green Continuous
Green 0.5 Hz flashing
light
Red Continuous
10.2.4

Monitoring: Telegram failure

Description
Following a telegram failure and after a monitoring time has elapsed (t_An), bit r2043.0 is set
to "1" and alarm A01920 is output. Binector output r2043.0 can be used for a quick stop,
for example.
Once a delay time (p2044) has elapsed, fault F01910 is output and fault reaction OFF3
(quick stop) is triggered. If no OFF response is to be triggered, the fault response can be
reparameterized accordingly.
Fault F01910 can be acknowledged immediately. The drive can then be operated even
without PROFIBUS.
Figure 10-3
312
Cyclic communication has not (yet) taken place.
PROFIBUS is ready for communication and cyclic communication is taking place.
Cyclic communication is not yet running fully.
Possible reason: The master is not transmitting setpoints.
Cyclic communication has been interrupted.
Monitoring: Telegram failure
Description
SINAMICS DCM Control Module
Operating Instructions, 06.2010, C98130-A7067-A1-02-7619