Siemens SINAMICS S110 List Manual page 225

Note: Re p1231 = 1, 2:
The external armature short circuit can only be selected for synchronous motors (p0300). In this case, control bit
BO: r1239.0 must be interconnected (e.g. to a digital input) to control the external contactor.
The external armature short circuit cannot be set as a fault response. It can be triggered via binector input p1230. It
is also always activated in the case of pulse suppression.
Re p1231 = 4:
The function is activated as soon as the activation criterion is fulfilled.
- the function can be initiated by OFF2
a) This function is not supported for synchronous motors (p0300 = 2xx, 4xx).
b) For induction motors (p0300 = 1xx), the DC braking is initiated.
Activation criterion (one of the following criteria is fulfilled):
- binector input p1230 = 1 signal (DC braking activation).
- the drive is not in the state "S4: Operation" or in S5x (refer to function diagram 2610).
- the internal pulse enable is missing (r0046.19 = 0).
Re p1231 = 5:
DC braking can only be set for induction motors.
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, demag-
netized (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/OFF3, 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 A change is made into normal operation if the OFF1 command is withdrawn prematurely.
DC braking by means of fault response continues to be possible.
Re p1231 = 14:
DC braking can only be set for induction motors.
DC braking is initiated if binector input p1230 = 1 during operation and the actual speed is below the starting speed
p1234 (before this, the drive must have operated above p1234 plus the hysteresis). Then, following upstream de-
magnetization (see p0347), the braking current p1232 is injected for the time set in p1233. The drive then changes
into normal operation. During braking the command for DC braking can be withdrawn. If the time p1233 is
exceeded, then DC braking is inhibited and the drive changes into normal operation.
For OFF1 and OFF3, DC braking is only executed, if binector input p1230 = 1 signal.
DC braking by means of fault response continues to be possible.
Re p1231 = 4, 5, 14:
The value can only be changed to values not equal to 4 or 14 if p0491 is not equal to 4 and p2101 is not equal to 6
(armature short circuit/DC braking not set).
Note:
ASC: Armature Short Circuit
DCBRK: DC Braking
p1232[0...n] DC braking, braking current / DCBRK I_brake
SERVO_S110-CAN, Can be changed: U, T
SERVO_S110-DP,
Data type: FloatingPoint32
SERVO_S110-PN
P-Group: Functions
Not for motor type: PEM, REL, FEM
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 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.
© Siemens AG 2012 All Rights Reserved
SINAMICS S110 List Manual (LH7), 06/2012, 6SL3097-4AP10-0BP3
Calculated: -
Dynamic index: MDS, p0130
Units group: -
Scaling: -
Max
10000.00 [Arms]
Parameter
List of parameters
Access level: 1
Func. diagram: 7017
Unit selection: -
Expert list: 1
Factory setting
0.00 [Arms]
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