298
Fault tracing
3ADW000379R0501 DCS550 Manual e e
display
Control Panel
word
active when
usually slower than the one of the drive). Check:
−
ComLossCtrl (30.28), FB TimeOut (30.35),
CommModule (98.02)
parameter settings of group 51 (fieldbus)
fieldbus cable
fieldbus termination
Parameter restored:
The parameters found in the flash were invalid at power
-
fault). All parameters were restored from
Local command loss:
Connection fault with
DCS Control Panel or DWL. Check:
LocalLossCtrl (30.27)
if control DCS Control Panel is disconnected
connection adapter
Parameter added:
A new firmware with a different amount of parameters was
downloaded. The new parameters are set to their default
values. The parameters causing the alarm ca
n be
Diagnosis (9.11). Check:
− new parameters and set them to the desired values
after
download of
firmware for
max. 10 s
Parameter setting conflict:
Is triggered by parameter settings conflicting with other
parameters. The parameters causing the alarm can be
identified in Diagnosis (9.11).
Retain data invalid:
Set when the retain data in the flash are invalid during
power
-up. In this case, the backup data are used.
The backup of the lost retain data reflects the status at the
previous power
-up.
Examples for retain data are:
fault logger data,
Data1 (19.01) to Data4 (19.04) and
I/O options (see group 98)
The situation of invalid retain data occurs, if the auxiliary
voltage of the DCS
550 is switched off about 2 seconds
-up (while the retain data sector is being
Check:
if the flash of the SDCS-CON-F is defective and
− if the auxiliary power supply has a problem
directly after
energizing of
electronics for
max. 10 s
Parameter compatibility:
When downloading parameter sets
or during power-up
the
firmware attempts to write the parameters. If the setting is
not possible or not
compatible, the parameter is set to
default. The parameters causing the alarm can be
identified
in Diagnosis (9.11). Check:
after
download of a
parameter set
for max. 10 s
Parameter up- or download failed: