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p1257[0...n]
Vdc_min controller speed threshold / Vdc_min n_thresh
G120X_DP (Vdc_min),
Access level: 3
G120X_PN (Vdc_min),
Can be changed: T, U
G120X_USS
Unit group: 3_1
(Vdc_min)
Min:
0.00 [rpm]
Description:
Sets the speed threshold for the Vdc-min controller (kinetic buffering).
If this value is exceeded a fault is output; the required response can be parameterized .
Kinetic buffering is not started below the speed threshold.
Note
Exiting the Vdc_min control before reaching motor standstill prevents the regenerative braking current from increasing
significantly at low speeds, and after a pulse inhibit, means that the motor coasts down.
However, the maximum braking torque can be set via the appropriate torque limiting.
r1258
CO: Vdc controller output / Vdc_ctrl output
Access level: 3
Can be changed: -
Unit group: 6_2
Min:
- [Arms]
Description:
Displays the actual output of the Vdc controller (DC link voltage controller)
Note
The regenerative power limit p1531 is used for vector control to precontrol the Vdc_max controller. The lower the power
limit is set, the lower the correction signals of the controller when the voltage limit is reached.
p1260
Bypass configuration / Bypass config
Access level: 2
Can be changed: T
Unit group: -
Min:
0
Description:
Sets the configuration for the bypass function.
Value:
0:
3:
Dependency:
The "Bypass" function is only available for induction motors.
Note
When the converter is switched on, the state of the bridging contactor is evaluated.
If the automatic restart is active (p1210 = 4) and both an ON command (r0054.0 = 1) and the bypass signal (p1266 =
1, configuration p1267.0 = 1) are still present during power up, the converter goes into "ready for operation and bypass"
state (r0899.0 = 1 and r0046.25 = 1) after power up, and the motor continues to run directly on the line.
The "bypass" function can only be switched off again (p1260 = 0) if the bypass is not active or the bypass function has
a fault.
The "flying restart" function must be activated (p1200).
r1261.0...11
CO/BO: Bypass control/status word / Bypass STW / ZSW
Access level: 2
Can be changed: -
Unit group: -
Min:
-
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
Bypass deactivated
Bypass without synchronization
Calculated: CALC_MOD_ALL Data type: FloatingPoint32
Scaling: -
Unit selection: p0505
Max:
210000.00 [rpm]
Calculated: -
Scaling: p2002
Unit selection: p0505
Max:
- [Arms]
Calculated: -
Scaling: -
Unit selection: -
Max:
3
Calculated: -
Scaling: -
Unit selection: -
Max:
-
Parameters
7.2 Parameter list
Dynamic index: DDS, p0180
Function diagram: -
Factory setting:
50.00 [rpm]
Data type: FloatingPoint32
Dynamic index: -
Function diagram: 6220
Factory setting:
- [Arms]
Data type: Integer16
Dynamic index: -
Function diagram: -
Factory setting:
0
Data type: Unsigned32
Dynamic index: -
Function diagram: -
Factory setting:
-
659
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