Siemens SINAMICS V90 Operating Instructions Manual page 328

Diagnostics
12.2 List of faults and alarms
Alarm
A1032: All parameters must
be saved
Message class: Hard-
ware/software error (1)
A1045: Configuring data
invalid
Message class: Hard-
ware/software error (1)
A1774: Test stop for fail-safe
digital outputs required
A1902: PROFIdrive: Clock
cycle synchronous operation
parameterization not permis-
sible
Message class: Error in the
parameteriza-
tion/configuration/commission
ing procedure (18)
A1920: Drive Bus: Receive
setpoints after To
Message class: Communica-
tion to the higher-level con-
troller faulted (9)
326
Cause
The parameters of an individual drive ob-
ject were saved, although there is still no
backup of all drive system parameters.
The saved object-specific parameters are
not loaded the next time that the system
powers up.
For the system to successfully power up,
all of the parameters must have been
completely backed up.
An error was detected when evaluating the
parameter files saved in the non-volatile
memory. Because of this, under certain
circumstances, several of the saved pa-
rameter values were not able to be ac-
cepted.
The preset time for the forced checking
procedure (test stop) for the fail-safe digital
outputs (F-DO) has been exceeded. A new
forced checking procedure is required.
Note:
This message does not result in a
•
safety stop response.
The test must be performed within a
•
defined maximum time interval (maxi-
mum of 8760 hours) in order to comply
with the requirements as laid down in
the standards for timely fault detection
and the conditions to calculate the fail-
ure rates of safety functions (PFH val-
ue). Operation beyond this maximum
time period is permissible if it can be
ensured that the forced checking pro-
cedure is performed before persons
enter the hazardous area and who are
depending on the safety functions cor-
rectly functioning.
Parameterization for isochronous opera-
tion is not permissible.
Output data of Drive Bus master (set-
points) received at the incorrect instant in
time within the Drive Bus clock cycle.
Remedy
Save all parameters.
Save the parameterization using the "Copy
RAM to ROM" function on the BOP. This
overwrites the incorrect parameter files in the
non-volatile memory – and the alarm is with-
drawn.
Carry out the forced checking procedure for
the digital outputs.
Adapt the bus parameterization Tdp, Ti,
•
To.
Adapt the sampling time for the current
•
controller or speed controller.
Reduce Tdx by using fewer bus partici-
•
pants or shorter telegrams.
Check bus configuration.
•
Check parameters for clock cycle syn-
•
chronization (ensure To > Tdx).
Note:
To: Time of setpoint acceptance
Tdx: Data exchange time
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2020, A5E37208830-008