Siemens SINAMICS G120D - Advanced Settings

Advanced commissioning
7.5 Motor control
Converter with control units CU250D-2
160 Operating Instructions, 04/2015, FW V4.7.3, A5E34261542B AB
Advanced settings
Parameter
Explanation
p1226
Standstill detection, speed threshold
(Factory setting: 20 rpm)
The moment of inertia estimator only measures the load torque for speeds ≥ p1226.
p1226 also defines from which speed the inverter switches-off the motor for OFF1
and OFF3.
p1560
Moment of inertia estimator accelerating torque threshold value
(factory setting:
10 %)
p1561
Moment of inertia estimator change time inertia
(factory setting: 500 ms)
The lower that p1561 or p1562
is, the shorter the moment of
inertia estimator measure-
ments.
The larger p1561 or p1562 is,
the more accurate the results
provided by the moment of
inertia estimator.
p1562
Moment of inertia estimator change time load
(facto-
ry setting: 10 ms)
p1563
Moment of inertia estimator load torque positive direction of rotation
(factory setting:
0 Nm)
p1564
Moment of inertia estimator load torque negative direction of rotation
(factory setting:
0 Nm)
p5310
Moment of inertia precontrol configuration (factory setting: 0000 bin)
.00
1 signal: activates calculation of the characteristic (p5312 … p5315)
.01
1 signal: activates moment of inertia precontrol
p5310.00 = 0, p5310.01 = 0
Deactivating moment of inertia precontrol
p5310.00 = 1, p5310.01 = 0
Adapting the moment of inertia precontrol
p5310.00 = 0, p5310.01 = 1 Activating the moment of inertia precontrol.
The characteristic of the moment of inertia
precontrol remains unchanged.
p5310.00 = 1, p5310.01 = 1
Activating the moment of inertia precontrol. The
inverter adapts the characteristic in parallel.
r5311
Moment of inertia precontrol status word
.00 1 signal: New measuring points for the characteristic of the moment of inertia
precontrol are available
.01
1 signal: new parameters are been calculated
.02
1 signal: moment of inertia precontrol active
.03 1 signal: the characteristic in the positive direction of rotation has been calcu-
lated and is ready
.04 1 signal: the characteristic in the negative direction of rotation has been calcu-
lated and is ready
.05
1 signal: The inverter writes actual results to the parameter
p5312
Moment of inertia precontrol linear positive
(factory
setting: 0 1/s
2
)
In a positive direction of rota-
tion:
Moment of inertia = p5312 ×
load torque + p5313
p5313
Moment of inertia precontrol constant positive
(fac-
tory setting: 0 kgm
2
)
p5314
Moment of inertia precontrol linear negative
(factory
setting: 0 1/s
2
)
In a negative direction of rota-
tion:
Moment of inertia = p5314 ×
load torque + p5315
p5315
Moment of inertia precontrol constant negative
(factory setting: 0 kgm
2
)