Siemens G130 List Manual page 352

2 Parameters
2.2 List of parameters
Note: A change to the braking current becomes effective the next time that DC braking is switched on.
The value for p1232 is specified as an rms value in the 3-phase system. The magnitude of the braking current is the
same as that of an identical output current at frequency zero (see r0067, r0068, p0640). The braking current is
internally limited to r0067.
For the current controller, the settings of parameters p1345 and p1346 (I_max limiting controller) are used.
p1233[0...n] DC braking time / DCBRK time
VECTOR_G Can be changed: U, T
Data type: FloatingPoint32
P-Group: Functions
Not for motor type: PMSM, SESM, REL
Min
0.0 [s]
Description: Sets the DC braking time (as fault response).
Dependency: Refer to: p1230, p1231, p1232, p1234, r1239
Note: The time set is also effective when parameterizing DC braking as fault response.
If a speed encoder is being used, DC braking is ended as soon as the drive falls below the standstill threshold
(p1226).
p1234[0...n] Speed at the start of DC braking / DCBRK n_start
VECTOR_G Can be changed: U, T
Data type: FloatingPoint32
P-Group: Functions
Not for motor type: PMSM, SESM, REL
Min
0.00 [rpm]
Description: Sets the starting speed for DC braking.
If the actual speed falls below this threshold, then DC braking is activated.
Dependency: Refer to: p1230, p1231, p1232, p1233, r1239
Notice: If an encoder fault occurs during closed-loop operation with an encoder, controlled deceleration of the drive down to
the start speed p1234 is no longer possible. In this case, DC braking is activated immediately and injects the braking
current p1232 for the braking time p1233 after de-magnetizing. The braking current and braking duration must,
therefore, be dimensioned accordingly for this situation so that the drive can be decelerated to standstill.
In the case of operation with an encoder, this speed may not be set too low so as ensure that the oscillation
movement induced by the residual flux/remanence of the motor does not cause DC braking to be deactivated again.
Note: Function p1231 = 14 is activated at 15 1/min higher than the value set in p1234. This hysteresis is required to prevent
DC braking from being deactivated for speed encoder signals with ripple.
p1235[0...n] BI: External armature short-circuit contactor feedback signal / ASC ext feedback
VECTOR_G Can be changed: T
Data type: Unsigned32 / Binary
P-Group: Functions
Not for motor type: -
Min
-
Description: Sets the signal source for the contactor feedback signal for external armature short-circuit.
Dependency: Refer to: p1230, p1231, p1236, p1237, r1239
Notice: In order that the pulses are not enabled when the contactor is closed, the contactor feedback signal must lag by a
sufficiently long time when opening the contactor.
Note: 1 signal: The contactor is closed.
0 signal: The contactor is open.
352
Calculated: -
Dyn. index: MDS, p0130
Unit group: -
Scaling: -
Max
3600.0 [s]
Calculated: -
Dyn. index: MDS, p0130
Unit group: -
Scaling: -
Max
210000.00 [rpm]
Calculated: -
Dyn. index: CDS, p0170
Unit group: -
Scaling: -
Max
-
List Manual (LH2), 07/2016, A5E03263479A
Access level: 1
Func. diagram: 7017
Unit selection: -
Expert list: 1
Factory setting
1.0 [s]
Access level: 1
Func. diagram: 7017
Unit selection: -
Expert list: 1
Factory setting
40000.00 [rpm]
Access level: 1
Func. diagram: -
Unit selection: -
Expert list: 1
Factory setting
0
SINAMICS G130/G150