User Manual

Parameters
List of Parameters
1-166
© Siemens AG 2011 All Rights Reserved
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 06/2011
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 vector control, a current value of 1.4142 x p1232 is obtained in the output phase U. For U/f control, the phase
angle is offset by -30 degrees to obtain a current measurement of 1.2247 x p1232 in output phase U.
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
Note: Re bit 12, 13:
Only effective for p1231 = 14.
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: - Data set: MDS
Units group: - Unit selection: -
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: - Data set: MDS
Units group: - Unit selection: -
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: - Data set: MDS
Units group: - Unit selection: -
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: - Data set: -
Units group: - Unit selection: -
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 -