Siemens CU230P-2 HVAC Parameter Manual page 158

Parameters
List of Parameters
p1230[0...n] BI: DC brake activation / DC brake active
PM240 Access level: 2
Can be changed: U, T
Min
-
Description: Sets the signal source to activate the DC brake.
Dependency: Refer to: p1231, p1232, p1233, p1234, r1239
Note: 1 signal: DC brake activated.
0 signal: DC brake deactivated.
p1231[0...n] DC brake configuration / DC brake config
PM240 Access level: 2
Can be changed: U, T
Min
0
Description: Setting to activate the DC brake.
Value: 0:
4:
Dependency: Refer to: p0300, p1232, p1233, p1234, r1239
Note: The function is activated as soon as the activation criterion is fulfilled.
- the function can be initiated by an OFF2 response.
Activation criterion (one of the following criteria is fulfilled):
- binector input p1230 = 1 signal (DC brake activation).
- the drive is not in the state "S4: Operation" or in "S5x" (refer to function chart 2610).
- the internal pulse enable is missing (r0046.19 = 0).
The function can only be used for induction motors (p0300 = 1).
The DC brake can only be withdrawn (p1231 = 0) if it is not being used as a fault response in p2101.
p1232[0...n] DC braking, braking current / DCBRK I_brake
PM240 Access level: 2
Can be changed: U, T
Min
0.00 [Arms]
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 the DC brake is powered up.
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).
For vector control, a current value of 1.4142 * p1232 is obtained in the output phase U. For V/f control, the phase
angle is offset by -30 degrees to obtain a current measurement of 1.2247 * p1232 in output phase U.
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
PM240 Access level: 2
Can be changed: U, T
Min
0.0 [s]
Description: Sets the DC braking time (as fault response).
Dependency: Refer to: p1230, p1231, p1232, p1234, r1239
1-158
No function
DC brake
Calculated: -
Scaling: -
Max
-
Calculated: -
Scaling: -
Max
4
Calculated: -
Scaling: -
Max
10000.00 [Arms]
Calculated: -
Scaling: -
Max
3600.0 [s]
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 11/2009
Data type: U32 / Binary
Data set: CDS, p0170
Factory setting
0
Data type: Integer16
Data set: MDS
Factory setting
0
Data type: FloatingPoint32
Data set: MDS
Factory setting
0.00 [Arms]
Data type: FloatingPoint32
Data set: MDS
Factory setting
1.0 [s]
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