Siemens SINAMICS G120 List Manual page 216

2 Parameters
2.2 List of parameters
Note: For p1210 = 1:
Faults that are present are automatically acknowledged. If new faults occur after a successful fault acknowledgment,
then these are also automatically acknowledged again. p1211 has no influence on the number of acknowledgment
attempts.
For p1210 = 4:
An automatic restart is only performed if fault F30003 has occurred on the power unit. If additional faults are present,
then these faults are also acknowledged and when successful, starting continues. If, for external 24 V power supplies
of the Control Unit, additional faults subsequently occur, these are no longer interpreted as line faults and are
therefore also not acknowledged.
For p1210 = 6:
An automatic restart is carried out if any fault has occurred.
For p1210 = 14:
as for p1210 = 4. However, active faults must be manually acknowledged.
For p1210 = 16:
as for p1210 = 6. However, active faults must be manually acknowledged.
For p1210 = 26:
as for p1210 = 6. For this mode, the switch-on command can be entered with a delay. The restart is interrupted with
either OFF2 or OFF3. Alarm A07321 is only displayed if the cause of the fault has been removed and the drive is
restarted by setting the switch-on command.
p1211 Automatic restart start attempts / AR start attempts
Access level: 3
Can be changed: U, T
Unit group: -
Min
0
Description: Sets the start attempts of the automatic restart function for p1210 = 4, 6, 14, 16, 26.
Dependency: A change is only accepted and made in the state "initialization" (r1214.0) and "wait for alarm" (r1214.1).
Refer to: p1210, r1214
Refer to: F07320
Notice: After fault F07320 occurs, the switch-on command must be withdrawn and all of the faults acknowledged so that the
automatic restart function is re-activated.
After a complete power failure (blackout) the start counter always starts with the counter value that applied before the
power failure, and decrements this start attempt by 1. If a further attempt to acknowledge is started by the automatic
restart function prior to power failure, e.g. when the CU remains active on power failure longer than the time p1212 /
2, the fault counter will already have been decremented once. In this case, the start counter is thus decreased by the
value 2.
Note: A start attempt starts immediately when a fault occurs. The start attempt is considered to been completed if the motor
was magnetized (r0056.4 = 1) and an additional delay time of 1 s has expired.
As long as a fault is present, an acknowledge command is generated in the time intervals of p1212 / 2. When
successfully acknowledged, the start counter is decremented. If, after this, a fault re-occurs before a restart has been
completed, then acknowledgment starts again from the beginning.
Fault F07320 is output if, after several faults occur, the number of parameterized start attempts has been reached.
After a successful start attempt, i.e. a fault/error has no longer occurred up to the end of the magnetizing phase, the
start counter is again reset to the parameter value after 1 s. If a fault re-occurs - the parameterized number of start
attempts is again available.
At least one start attempt is always carried out.
After a line supply failure, acknowledgment is immediate and when the line supply returns, the system is switched on.
If, between successfully acknowledging the line fault and the line supply returning, another fault occurs, then its
acknowledgment also causes the start counter to be decremented.
For p1210 = 26:
The start counter is decremented if after a successful fault acknowledgment, the on command is present.
216
Calculated: -
Scaling: -
Unit selection: -
Max
10
Data type: Unsigned16
Dyn. index: -
Func. diagram: -
Factory setting
3
SINAMICS G120 CU250S-2 Control Units
List Manual, 09/2017, A5E33842890