Siemens SINAMICS G120 List Manual page 400

2 Parameters
2.2 List of parameters
For synchronous motors, the following condition must be fulfilled:
|p0305 x p9783| >= p9388 x 1.2
Recommendation: If required, the correct value of the motor minimum current should be determined by making the appropriate
measurements.
Dependency: Refer to: r9785
Refer to: C30711
Notice: This parameter is overwritten by the copy function of the safety functions integrated in the drive.
If this percentage value is reduced excessively, then this can result in a safety message and an inaccurate actual
value.
p9389 SI Motion actual value sensing sensorless accel. limit (P2) / ActVal sl a_lim P2
PM240 Access level: 3
PM250
Can be changed: C(95)
PM260
Unit group: -
CU240E-2_F
Min
CU240E-2_PN_F
10.00 [%]
CU240E-2_DP_F
Description: Sets the acceleration limit to filter velocity fluctuations.
If this percentage value is increased, when accelerating, velocity peaks that do not reflect the real velocity
characteristic can occur.
If this value is decreased, and this dampens the velocity peaks when accelerating.
- the value must be increased if C30711 with message value 1043 has occurred.
- the value must be lowered if acceleration procedures have led to an excessive Safety actual velocity.
Recommendation: The setting of this parameter depends on the motor and closed-loop control, and must be newly determined for each
configuration.
To do this, a measurement should be performed while the actual value jumps, and the limit in r9785[0] must be set so
low using p9389, so that it is exceeded by the value in r9785[1] a maximum of four times per second. The actual
value correction filter intervenes at this instant in time. The step is no longer so drastic.
Dependency: Refer to: r9784
Refer to: C30711
Notice: This parameter is overwritten by the copy function of the safety functions integrated in the drive.
r9398[0...1] SI Motion actual checksum SI parameters (processor 2) / SI Mtn act CRC P2
PM240 Access level: 3
PM250
Can be changed: -
PM260
Unit group: -
CU240E-2_F
Min
CU240E-2_PN_F
-
CU240E-2_DP_F
Description: Displays the checksum over the checked Safety Integrated parameters of the motion monitoring functions (actual
checksum) on processor 2.
Index: [0] = Checksum over SI parameters for motion monitoring
[1] = Checksum over SI parameters with hardware reference
Dependency: Refer to: p9399
p9399[0...1] SI Motion setpoint checksum SI parameters (processor 2) / SI Mtn setp CRC P2
PM240 Access level: 3
PM250
Can be changed: C(95)
PM260
Unit group: -
CU240E-2_F
Min
CU240E-2_PN_F
0000 hex
CU240E-2_DP_F
Description: Sets the checksum over the checked Safety Integrated parameters of the motion monitoring functions (actual
checksum) on processor 2.
Index: [0] = Checksum over SI parameters for motion monitoring
[1] = Checksum over SI parameters with hardware reference
400
Calculated: -
Scaling: -
Unit selection: -
Max
3300.00 [%]
Calculated: -
Scaling: -
Unit selection: -
Max
-
Calculated: -
Scaling: -
Unit selection: -
Max
FFFF FFFF hex
SINAMICS G120 Control Units CU240B-2/CU240E-2
Data type: FloatingPoint32
Dyn. index: -
Func. diagram: -
Factory setting
100.00 [%]
Data type: Unsigned32
Dyn. index: -
Func. diagram: -
Factory setting
-
Data type: Unsigned32
Dyn. index: -
Func. diagram: -
Factory setting
0000 hex
List Manual (LH11), 01/2016, A5E33839529