Siemens CU240S DP-F - Page 152

Parameters
List of Parameters
1-152
© Siemens AG 2007 All Rights Reserved
SINAMICS G120 Control Units CU240S, Edition 05/2007
Restrictions:
SLVC is dependent on the accuracy of the motor model being used and the measurements being performed by the
inverter. There are therefore certain restrictions on the use of SLVC:
Recommended means of commissioning:
For correct operation under SLVC control it is imperative that the name plate data of the motor (P0304 - P0310) is
correctly entered and that the motor data identification (P1900) must be carried out on a cold motor.
It is also necessary to ensure that the motor ambient temperature is correctly entered in P0625 if this is significantly
different from the default value of 20°C.
This must be done after the quick commissioning has been completed (P3900) but before the motor data identifica-
tion measurements are carried out.
Optimisation:
The following parameters can be adjusted by the user to improve performance.
• P0003 = 3
• P0342: Total / motor inertia ratio
Sensorless Vector Control (SLVC):
• P1470: P gain (SLVC)
• P1472: I term (SLVC)
• P1610: Continuous torque boost (SLVC, open loop boost)
• P1750: Control word of motor model
The following table presents an overview of control parameters (SLVC) that can be modified in relationship to
P1300 dependencies:
(max. frequency)f
max
= min(200 Hz, 5 p0310)
r0207
r0209
r0207
p0305
4
1
≤≤
(ratio of rated motor current to rated inverter current)
no synchronuos motor