Siemens SINAMICS G120D CU240D-2 DP Manual page 192

2 Parameters
2.2 List of parameters
Notice: When the motor holding brake is activated, pulse cancellation is additionally delayed by the brake closing time
(p1217).
p1230[0...n] BI: DC braking activation / DC brake act
Access level: 2
Can be changed: U, T
Unit group: -
Min
-
Description: Sets the signal source to activate DC braking.
Dependency: Refer to: p1231, p1232, p1233, p1234, r1239
Note: 1 signal: DC braking activated.
0 signal: DC braking de-activated.
p1231[0...n] DC braking configuration / DCBRK config
Access level: 2
Can be changed: U, T
Unit group: -
Min
0
Description: Setting to activate DC braking.
Value: 0:
4:
5:
14:
Dependency: Refer to: p0300, p1232, p1233, p1234, r1239
Note: The function can only be used for induction motors (p0300 = 1).
For p1231 = 4:
The function is activated as soon as the activation criterion is fulfilled.
- the function can be superseded by an OFF2 response.
Activation criterion (one of the following criteria is fulfilled):
- binector input p1230 = 1 signal (DC braking activation, depending on the operating mode).
- the drive is not in the state "S4: Operation" or in "S5x".
- the internal pulse enable is missing (r0046.19 = 0).
DC braking can only be withdrawn (p1231 = 0) if it is not being used as a fault response in p2101.
In order that DC braking is active as fault response, the corresponding fault number must be entered in p2100 and
fault response p2101 set = 6.
For p1231 = 5:
DC braking is activated if the OFF1 or OFF3 command is present. Binector input p1230 is ineffective. If the drive
speed still lies above the speed threshold p1234, then initially, the drive is ramped-down to this threshold,
demagnetized (see p0347) and is then switched into DC braking for the time set in p1233. After this, the drive is
switched-off. If, at OFF1, the drive speed is below p1234, then it is immediately demagnetized and switched into DC
braking. A change is made into normal operation if the OFF1 command is withdrawn prematurely (the system waits
for demagnetization). Flying restart must be activated if the motor is still rotating.
DC braking by means of fault response continues to be possible.
For p1231 = 14:
In addition to the function for p1231 = 5, binector input p1230 is evaluated.
DC braking is only automatically activated when the speed threshold p1234 is fallen below if binector input p1230 = 1
signal. This is also the case, if no OFF command is present.
After demagnetization and after the time in p1233 has expired, the drive changes back into normal operation or is
switched-off (for OFF1/OFF3).
If a 0 signal is applied to binector input p1230, for OFF1 and OFF3 no DC braking is executed.
Note:
DCBRK: DC Braking
192
No function
DC braking
DC braking for OFF1/OFF3
DC braking below starting speed
Calculated: -
Scaling: -
Unit selection: -
Max
-
Calculated: -
Scaling: -
Unit selection: -
Max
14
Data type: U32 / Binary
Dyn. index: CDS, p0170
Func. diagram: 7017
Factory setting
0
Data type: Integer16
Dyn. index: MDS, p0130
Func. diagram: 7014, 7016, 7017
Factory setting
0
SINAMICS G120D
List Manual (LH14), 01/2016, A5E33842313