09.2008 Communication / PROFIBUS
Siemens AG 6SE7087-6QX70 (Version AK)
SIMOVERT MASTERDRIVES Compendium Motion Control 8.2-117
8.2.10 Diagnosis and troubleshooting
With regard to basic parameterization, please note the differences in
diagnosis and troubleshooting to the types of unit with the older function
classes FC (CU1), VC (CU2) and SC (CU3). These differences are
described below.
In order to make these differences clear, the parameter numbers and
other deviations are either printed in dark gray or have a dark-gray
background.
8.2.10.1 Evaluating the possibilities of hardware diagnosis
There are three LED displays on the front of the CBP:
♦ red: CBP operating
♦ yellow: Data exchange with the basic unit
♦ green: Transfer of useful data via the PROFIBUS
Diagnostic LEDs give the user rapid information on the status of the CBP
at any particular instant.
More detailed diagnostic information can be read out directly from the
diagnostics memory of the CBP by means of a diagnostic parameter.
During normal operation, all three LEDs light up synchronously and for
the same length of time (flashing)!
The stationary status of an LED (on or off) indicates an unusual
operating status (parameterization phase or fault)!
LED Status Diagnostic information
Red Flashing CBP operating; voltage supply on
Yellow Flashing Fault-free data exchange with the basic unit
Green Flashing
Fault-free cyclical useful data traffic with a master,
class 1, via PROFIBUS
Table 8.2-20 LED display of the CBP
LED Status Diagnostic information
Red
Yellow
Green
Flashing
Flashing
Off
No cyclical useful data traffic with a master, class 1,
via PROFIBUS –DP
due to e.g. EMC interference, bus connector pulled
out, polarity reversal of connections, node number
not supplied with useful data by the master.
Acyclical useful data traffic with a master, class 2
(DriveES, DriveMonitor, SIMATIC OP) does not
affect the green LED.
Table 8.2-21 Online operation without useful data
NOTE
LED displays
NOTE
To Next Page
Loading...
Need help?
General