User Manual

SINAMICS G120 CU230P-2 Control Units
List Manual (LH9), 04/2014, A5E33838102B AA
169
2 Parameters
2.2 List of parameters
Re 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.
Description: Sets the braking current for DC braking.
Dependency: Refer to: p1230, p1231, p1233, p1234, r1239, p1345, p1346
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.
Description: Sets the DC braking time (as fault response).
Dependency: Refer to: p1230, p1231, p1232, p1234, r1239
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
Description: Status word of the DC braking.
Dependency: Refer to: p1231, p1232, p1233, p1234
p1232[0...n] DC braking braking current / DCBRK I_brake
Access level: 2 Calculated: p0340 = 1 Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: MDS, p0130
Units group: - Unit selection: - Func. diagram: 7017
Min Max Factory setting
0.00 [Arms] 10000.00 [Arms] 0.00 [Arms]
p1233[0...n] DC braking time / DCBRK time
Access level: 2 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: MDS, p0130
Units group: - Unit selection: - Func. diagram: 7017
Min Max Factory setting
0.0 [s] 3600.0 [s] 1.0 [s]
p1234[0...n] Speed at the start of DC braking / DCBRK n_start
Access level: 2 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Dyn. index: MDS, p0130
Units group: - Unit selection: - Func. diagram: 7017
Min Max Factory setting
0.00 [rpm] 210000.00 [rpm] 210000.00 [rpm]
r1239.8...13 CO/BO: DC braking status word / DCBRK ZSW
Access level: 2 Calculated: - Data type: Unsigned32
Can be changed: - Scaling: - Dyn. index: -
Units group: - Unit selection: - Func. diagram: -
Min Max Factory setting
- - -
Bit field: Bit Signal name 1 signal 0 signal FP
08 DC braking active Yes No 7017
10 DC braking ready Yes No 7017
11 DC braking selected Yes No -
12 DC braking selection internally inhibited Yes No -
13 DC braking for OFF1/OFF3 Yes No -