Braking The Motor Electrically; Dc Braking - Siemens SIMATIC ET 200pro FC-2 Operating Instructions Manual

Parameter
p1562
p1563
p1564
p5310
r5311
p5312
p5313
p5314
p5315
7.12

Braking the motor electrically

7.12.1

DC braking

DC braking is used for applications where the motor must be actively stopped; however,
neither an inverter capable of energy recovery nor a braking resistor is available.
SIMATIC ET 200pro FC-2 converter
Operating Instructions, 04/2018, FW V4.7 SP10, A5E34257324B AF
Explanation
Moment of inertia estimator change time
load (factory setting: 10 ms)
Moment of inertia estimator load torque positive direction of rotation (factory setting:
0 Nm)
Moment of inertia estimator load torque negative direction of rotation (factory setting:
0 Nm)
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
p5310.00 = 1, p5310.01 = 0
p5310.00 = 0, p5310.01 = 1
p5310.00 = 1, p5310.01 = 1
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 calculat-
ed and is ready
.04 1 signal: The characteristic in the negative direction of rotation has been calculat-
ed and is ready
.05 1 signal: The inverter writes actual results to the parameter
Moment of inertia precontrol linear positive
(factory setting: 0 1/s )
2
Moment of inertia precontrol constant
positive (factory setting: 0 kgm
Moment of inertia precontrol linear nega-
tive (factory setting: 0 1/s
2
Moment of inertia precontrol constant
negative (factory setting: 0 kgm
7.12 Braking the motor electrically
measurements.
The larger p1561 or p1562 is, the more
accurate the results provided by the mo-
ment of inertia estimator.
Deactivating moment of inertia precontrol
Adapting the moment of inertia precontrol
Activating the moment of inertia precontrol.
The characteristic of the moment of inertia pre-
control remains unchanged.
Activating the moment of inertia precontrol. The
inverter adapts the characteristic in parallel.
In a positive direction of rotation:
Moment of inertia = p5312 × load torque +
p5313
)
2
In a negative direction of rotation:
)
Moment of inertia = p5314 × load torque +
p5315
)
2
Advanced commissioning
167