Siemens SINAMICS G120D Operating Instructions Manual page 142

Setting functions
8.5 Motor control
Parameter
p0341
p0342
p1400
r1407
r1493
p1496
p1498
p1502
142
Explanation
Motor moment of inertia (factory setting: 0 kgm
The inverter sets the parameter when selecting a listed motor. The parameter is then
write-protected.
Moment of inertia total ratio to motor (factory setting: 1)
Ratio of moment of inertia load + motor to moment of inertia of motor without load
Speed control configuration
Bit
.18 1 signal Moment of inertia estimator active
0 signal Moment of inertia estimator inactive
.20 1 signal Acceleration model on
0 signal Acceleration model off
.22 1 signal Moment of inertia estimator retain value when motor switched off
0 signal Moment of inertia estimator reset value to initial value J
motor switched off:
J = p0341 × p0342 + p1498
0
If the load torque can change at a standstill, set p1400.22 = 0.
Status word, speed controller
Bit
.24 1 signal Moment of inertia estimator is active
0 signal Moment of inertia estimator is inactive
.25 1 signal Load estimator is active
0 signal Load estimator is inactive
.26 1 signal Moment of inertia estimator is engaged
0 signal Moment of inertia estimator is not engaged
Total moment of inertia, scaled
r1493 = p0341 × p0342 × p1496
Acceleration pre-control scaling (factory setting: 0 %)
According to rotating measurement of the motor data identification is p1496 = 100 %.
Load moment of inertia (factory setting: 0 kgm
Freeze moment of inertia estimator (factory setting: 0)
If the load torque changes when accelerating the motor, set this signal to 0.
1 signal Moment of inertia estimator is active
0 signal Determined moment of inertia is frozen
)
2
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2
Converter with control units CU240D-2
Operating Instructions, 04/2014, FW V4.7, A5E34262100B AA
when
0