Flying Restart; Flying Start - Siemens MICROMASTER 440 Parameter Manual

Parameter Description
3.22

Flying restart

P1200

Flying start

CStat: CUT
P-Group: FUNC
Starts inverter onto a spinning motor by rapidly changing the output frequency of the inverter until the actual
motor speed has been found. Then, the motor runs up to setpoint using the normal ramp time.
(f + 2f
max slip nom
fout
P1202
I out
I dc
Vn
V out
Possible Settings:
0 Flying start disabled
1 Flying start is always active, start in direction of setpoint
2 Flying start is active if power on, fault, OFF2, start in direction of setpoint
3 Flying start is active if fault, OFF2, start in direction of setpoint
4 Flying start is always active, only in direction of setpoint
5 Flying start is active if power on, fault, OFF2, only in direction of setpoint
6 Flying start is active if fault, OFF2, only in direction of setpoint
Note:
- Useful for motors with high inertia loads.
- Settings 1 to 3 search in both directions.
- Settings 4 to 6 search only in direction of setpoint.
- Flying start must be used in cases where the motor may still be turning (e.g. after a short mains break)
or can be driven by the load. Otherwise, overcurrent trips will occur.
136
Datatype: U16
Active: first confirm
)
'ramps to set point
with normal ramp'
'motor speed found'
Min:
Unit: - Def:
QuickComm.: No Max:
t
t
t
as per V/f
characteristic
t
MICROMASTER 440
Issue 01/06
Level
0
2
0
6
Parameter List
6SE6400-5BB00-0BP0