Field Power Unit Operating Mode / Field Pu Op Mode - Siemens SINAMICS DCM List Manual

2 Parameters
2.2 List of parameters
p50082

Field power unit operating mode / Field PU op mode

DC_CTRL Can be changed: C2(1), T
Data type: Integer16
P-Group: -
Not for motor type: -
Min
0
Description: Sets the operating mode for the field power unit.
If p50082 = 1, 2, 3, 4, the motor flux is calculated according to the field characteristic (p50120 to p50139) as a
function of the field current actual value (r52265).
Value: 0:
1:
2:
3:
4:
21:
22:
23:
24:
Dependency: Refer to: r50073, p50076, p50258, p50265, p50612, p51838, r52265, r52268, r52290
Notice: Although it is permissible for the parameter to be changed to values not equal to 0 in operating states o1.0, such
changes will not be applied until operating states greater than or equal to o7.0.
Note: If an external field device is used, the setpoint comes from r52268 (e.g. via an analog output or over the peer-to-peer
interface).
The rated direct current of the external field device should be set in p51838. This value is also displayed in r50073[1].
p50076[2] is redundant.
If the external field device sends a field current actual value signal, this should be fed in via p50612. If the external
field device is not able to send a field current actual value signal, p50263 should be set to a value of 1 or 2.
If the external field device sends an I_field < I_field_min signal, this can be fed in at injection point p50265.
If p50082 = 0:
- No field is used (e.g. in the case of permanent-magnet motors). The field firing pulses are disabled. The motor flux
is set to the value for 100% rated flux.
If p50082 = 1:
- Internal field power unit. The line supplies for the field and armature sections are connected or disconnected
simultaneously. The field firing pulses are enabled/disabled at the same time as the line contactor closes/opens; the
field current decays with the field time constant during freewheeling.
If p50082 = 2:
- Internal field power unit. Automatic injection of standstill field set in p50257 after expiry of a period of time set in
p50258 once operating state o7 or higher has been reached.
If p50082 = 3:
- Internal field power unit. The field is active continuously.
If p50082 = 4:
- Internal field power unit. The field is switched together with the Auxiliaries ON signal (p53210.2).
If p50082 = 21:
- External field device. The field is controlled in the same way as with p50082 = 1.
If p50082 = 22:
- External field device. The field is controlled in the same way as with p50082 = 2.
If p50082 = 23:
- External field device. The field is controlled in the same way as with p50082 = 3.
If p50082 = 24:
- External field device. The field is controlled in the same way as with p50082 = 4.
392
No field
Field switched with line contactor
Standstill field for >= o7.0
Field continuously active
Field switched with Auxiliaries ON signal
External field power unit, otherwise as setting 1
External field power unit, otherwise as setting 2
External field power unit, otherwise as setting 3
External field power unit, otherwise as setting 4
Calculated: -
Dyn. index: -
Unit group: -
Scaling: -
Max
24
List Manual (LH8), 02/2015, 6RX1800-0ED76
Access level: 1
Func. diagram: 6910, 8044,
8047
Unit selection: -
Expert list: 1
Factory setting
2
SINAMICS DCM