Siemens Sinamics G120 Series Parameter Manual page 49

r0345[0...2] Motor start-up time / Mot. start-up time
Access level: 3
Unit: [s]
Description: Displays motor start-up time.
This time corresponds to the standardized motor inertia.
The start-up time is the time taken to reach rated motor speed from standstill at acceleration with rated motor torque
(r0333).
p0346[0...2] Magnetization time / Magnetization time
Access level: 3
Quick comm. NO
Can be changed: U, T
Min
0.000 [s]
Description: Sets magnetization time [s], i.e. waiting time between pulse enable and start of ramp-up.
Motor magnetization builds up during this time. Magnetization time is normally calculated automatically from the
motor data and corresponds to the rotor time constant.
Notice: An excessive reduction of this time can result in insufficient motor magnetization.
Note: If boost settings are higher than 100 %, magnetization time may be reduced.
Default value is depending on inverter type and its rating data.
p0347[0...2] Demagnetization time / Demagnet. time
Access level: 3
Quick comm. NO
Can be changed: U, T
Min
0.000 [s]
Description: Changes time allowed after OFF2 / fault condition, before pulses can be re-enabled.
Notice: Not active following a normally completed ramp-down, e.g. after OFF1, OFF3 or JOG.
Overcurrent trips will occur if the time is decreased excessively.
Note: The demagnetization time is approximately 2.5 x rotor time constant in seconds.
Default value is depending on inverter type and its rating data.
© Siemens AG 2007 All Rights Reserved
SINAMICS G120 Control Units CU240S, Edition 05/2007
P-Group: Motor
P-Group: Motor
Active: YES
Max
20.000 [s]
P-Group: Motor
Active: YES
Max
20.000 [s]
Parameters
List of Parameters
Data type: Floating Point
Data set: DDS
Data type: Floating Point
Data set: DDS
Factory setting
1.000 [s]
Data type: Floating Point
Data set: DDS
Factory setting
1.000 [s]
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