List of Parameters
Parameters
1-139
© Siemens AG 2007 All Rights Reserved
SINAMICS G120 Control Units CU240S, Edition 05/2007
Description: Displays overall frequency setpoint after ramp generator.
Description: 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.
Values: 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 direc
3: Flying start is active if fault, OFF2, start in direction of se
4: Flying start is always active, only in direction of setpoint
5: Flying start is active if power on, fault, OFF2, only in direct
6: Flying start is active if fault, OFF2, only in direction of set
Notice: 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.
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.
Description: Defines search current used for flying start.
Value is in [%] based on rated motor current (P0305).
Note: Reducing the search current may improve performance for flying start if the inertia of the system is not very high.
Description: Sets factor (in V/f mode only) by which the output frequency changes during flying start to synchronize with turning
motor.
This value is entered in [%]. It defines the reciprocal initial gradient in the search sequence.
Parameter P1203 influences the time taken to search for the motor frequency.
Example: For a motor with 50 Hz, 1350 rpm, 100 % would produce a maximum search time of 600 ms.
Note: A higher value produces a flatter gradient and thus a longer search time.
A lower value has the opposite effect.
r1170 CO: Frequency setpoint after RFG / Setp. after RFG
Access level: 3 P-Group: Setpoints Data type: Floating Point
Unit: [Hz] Data set: -
p1200 Flying start / Flying start
Access level: 2 P-Group: - Data type: Unsigned16
Quick comm. NO Active: NO Data set: -
Can be changed: C, U, T
Min Max Factory setting
0 6 0
p1202[0...2] Motor-current: Flying start / Mot. cur: Flystart
Access level: 3 P-Group: - Data type: Unsigned16
Quick comm. NO Active: NO Data set: DDS
Can be changed: C, U, T
Min Max Factory setting
10 [%] 200 [%] 100 [%]
p1203[0...2] Search rate: Flying start / SrchRate: Flystart
Access level: 3 P-Group: - Data type: Unsigned16
Quick comm. NO Active: NO Data set: DDS
Can be changed: C, U, T
Min Max Factory setting
10 [%] 200 [%] 100 [%]
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