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Parameters
Parameter list
p1200[0...n]
FlyRest oper mode / FlyRest oper mode
VECTOR
Can be changed: U, T
Data type: Integer16
P-Group: Functions
Min
0
Description:
Sets the operating mode for flying restart.
The flying restart allows the drive converter to be powered-up while the motor is still rotating. In so doing, the drive
converter output frequency is changed until the actual motor speed/velocity is found.. The motor then accelerates
up to the setpoint at the ramp generator setting.
Values:
0:
1:
2:
3:
4:
5:
6:
Dependency:
A differentiation is made between flying restart for V/f control and for vector control (p1300).
Flying restart, V/f control: p1202, p1203, r1204
Flying restart for closed-loop vector control: p1202, p1203, r1205
Notice:
The "flying restart" function must be used in cases where the motor is possibly still running (e.g. after a brief line
supply interruption) or is being driven by the load. The system might otherwise shut down as a result of overcurrent.
It does not make sense to use "flying restart" together with the "motor holding brake function" (p1215 > 0) because
then the flying restart will always be realized with the motor stationary.
Note:
The flying restart takes, as a maximum, twice as long as the motor excitation time (p0346).
For p1200 = 2, 5, the following applies:
The "power-on" is the first power-on operation after the drive system has run-up. This is practical for motors with a
high-inertia load.
For p1200 = 1, 2, 3, the following applies: The search is made in both directions.
For p1200 = 4, 5, 6, the following applies: Search performed in the setpoint direction only.
p1202[0...n]
FlyRest srch curr / FlyRest srch curr
VECTOR
Can be changed: U, T
Data type: Floating Point
P-Group: Functions
Min
10 [%]
Description:
Sets the search current for the "flying restart" function. The value is referred to the motor magnetizing current.
Dependency:
Refer to: r0331
Note:
Reducing the search current can improve the flying restart performance (if the system moment of inertia is not very
high).
p1203[0...n]
Flying restart search rate factor / FlyRst v_Srch Fact
VECTOR
Can be changed: U, T
Data type: Floating Point
P-Group: Functions
Min
10 [%]
Description:
The value influences the rate at which the output frequency is changed during a flying restart . A higher value
results in a longer search time.
Notice:
For vector control, a value that is too low or too high can cause flying restart to become unstable.
1-156
FlyRestart inactive
Flying restart is always active (start in the setpoint direction)
Flying restart is active after power-on, fault, OFF2 (start in the setpoint direction)
Flying restart is active after fault, OFF2 (start in the setpoint direction)
Flying restart is always active (start only in the setpoint direction)
Flying restart is active after power-on, fault, OFF2 (start only in the setpoint direction)
Flying restart is active after fault,OFF2 (start only in the setpoint direction)
Data set: DDS
Units group: -
Max
6
Data set: DDS
Units group: PERCENT
Max
400 [%]
Data set: DDS
Units group: PERCENT
Max
400 [%]
Siemens AG 2004 All Rights Reserved
SINAMICS G List Manual, Edition 12.2004
Access level: 2
Function diagram: 1690
Unit selection: -
Factory setting
0
Access level: 3
Function diagram: -
Unit selection: -
Factory setting
100 [%]
Access level: 3
Function diagram: -
Unit selection: -
Factory setting
100 [%]
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