Siemens G130 List Manual page 350

2 Parameters
2.2 List of parameters
p1231[0...n] Armature short-circuit / DC braking configuration / ASC/DCBRK config
VECTOR_G Can be changed: U, T
Data type: Integer16
P-Group: Functions
Not for motor type: -
Min
0
Description: Setting to activate the various types for armature short-circuit / DC braking.
Value: 0:
1:
2:
3:
4:
5:
14:
Dependency: Refer to: p0300, p1230, p1232, p1233, p1234, p1235, p1236, p1237, r1238, r1239, p1345, p1346
Danger: For p1231 = 1, 2:
- only short-circuit-proof motors may be used, or suitable resistors must be used to short-circuit the motor
For p1231 = 3:
- when the internal voltage protection is active, after pulse suppression, all of the motor terminals are at half of the DC
link voltage (without an internal voltage protection, the motor terminals are at zero potential)!
- it is only permissible to use motors that are short-circuit proof (p0320 < p0323).
- the Motor Module must be able to conduct 180% short-circuit current (r0320) of the motor (r0209).
- the internal voltage protection cannot be interrupted due to a fault response. If an overcurrent condition occurs
during the active, internal voltage protection, then this can destroy the Motor Module and/or the motor.
- if the Motor Module does not support the autonomous, internal voltage protection (r0192.10 = 0), in order to ensure
safe, reliable functioning when the line supply fails, an external 24 V power supply (UPS) must be used for the
components.
- if the Motor Module does support the autonomous, internal voltage protection (r0192.10 = 1), in order to ensure
safe, reliable functioning when the line supply fails, the 24 V power supply for the components must be provided
through a Control Supply Module.
- if the internal voltage protection is active, it is not permissible that the motor is driven by the load for a longer period
of time (e.g. as a result of loads that move the motor or another coupled motor).
For p1231 = 4 and synchronous motor:
- when armature short-circuit is active, all of the motor terminals are at half of the DC link potential.
- it is only permissible to use motors that are short-circuit proof (p0320 < p0323).
- the Motor Module must be able to conduct 180% short-circuit current (r0320) of the motor (r0209).
Note: For 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.
When the external armature short circuit is activated, the system waits for the de-excitation time (p0347) before the
short-circuit contactor is controlled. For vector control, for the de-excitation time, a value greater than zero may be
required in order to avoid the overcurrent monitoring from responding.
For p1231 = 3:
Internal voltage protection (using an internal armature short circuit) can only be selected for synchronous motors
(p0300) and Motor Modules in booksize or chassis format. Further, it is not permissible for Safety Integrated to be
active on blocksize Motor Modules (i.e. p9501 = 0 and p9601 = 0). The internal voltage protection prevents the DC
link capacitance from being charged if there is no possibility of regenerating the EMF of a motor operated in the field-
weakening mode. The Motor Module must support this function (r0192.9 = 1).
a) If the Motor Module does not support the autonomous, internal armature short-circuit (r0192.10 = 0), the armature
short-circuit is activated as soon as the activation criterion is fulfilled (refer below):
b) If the Motor Module supports the autonomous internal voltage protection (r0192.10 = 1), then the Motor Module
itself decides - using the DC link voltage - as to whether the short-circuit should be activated. In this case, protection
is also provided even if the DRIVE-CLiQ connection between the Control Unit and Motor Module was interrupted.
350
No function
External armature short-circuit with contactor feedback signal
Ext. armature short circuit without contactor feedback signal
Internal voltage protection
Internal armature short-circuit / DC braking
DC braking for OFF1/OFF3
DC braking below starting speed
Calculated: -
Dyn. index: MDS, p0130
Unit group: -
Scaling: -
Max
14
List Manual (LH2), 07/2016, A5E03263479A
Access level: 1
Func. diagram: 7014, 7016,
7017
Unit selection: -
Expert list: 1
Factory setting
0
SINAMICS G130/G150