Testing And Diagnosis On The Bus Coupler; Reading The Diagnostic Display On The Bus Coupler - Aventics PROFIBUS DP Instrucciones De Servicio

AVENTICS | PROFIBUS DP | R412009414-BDL-001-AE
7.3

Testing and diagnosis on the bus coupler

7.3.1 Reading the diagnostic display on the bus
coupler
The LEDs on the front panel of the bus coupler show the
messages from Tab. 13.
O
Before commissioning and during operation, regularly
check bus coupler functions by reading the diagnostic
displays.
Tab. 13:

Reading the diagnostic display on the bus coupler

LED Signal Description
UL/ Green Logic supply available
DIA
Red Valve or sensor supply overload (group diagnosis)
Off No logic supply available
U Green Valve supply U
Q1
Red Low voltage (12 V < U
Off Valve supply U
U Green Valve supply U
Q2
Red Low voltage (12 V < U
Off Valve supply U
BF Green Slave is in "data exchange mode",
i. e. the slave has been parameterized and is
accessed by the master in cycles (RUN).
Red Bus error, the bus connection is trying to find the
baud rate. Possible causes:
W
Bus cable is not attached
W
Master has been switched off
1)
This display appears only as long as the overloaded output is controlled.
Commissioning/Operation
ok
Q1
< 21.6 V/20.4 V)
Q1
< 12 V
Q1
ok
Q2
< 21.6 V/20.4 V)
Q2
< 12 V
Q2
83
1)