Siemens SINAMICS G120D Series - Page 163

Advanced commissioning
7.5 Motor control
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
measurements.
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
(factory 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
)
Converter with control units CU240D-2
Operating Instructions, 04/2015, FW V4.7.3, A5E34262100B AB
163