Siemens SINAMICS G120X, Руководство по эксплуатации

Страница: 661 / 1148

p1257[0...n] Vdc_min controller speed threshold / Vdc_min n_thresh
G120X_DP (Vdc_min),
G120X_PN (Vdc_min),
G120X_USS
(Vdc_min)
Access level: 3 Calculated: CALC_MOD_ALL Data type: FloatingPoint32
Can be changed: T, U Scaling: - Dynamic index: DDS, p0180
Unit group: 3_1 Unit selection: p0505 Function diagram: -
Min:
0.00 [rpm] Max:
210000.00 [rpm] Factory setting:
50.00 [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 Calculated: - Data type: FloatingPoint32
Can be changed: - Scaling: p2002 Dynamic index: -
Unit group: 6_2 Unit selection: p0505 Function diagram: 6220
Min:
- [Arms] Max:
- [Arms] Factory setting:
- [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 Calculated: - Data type: Integer16
Can be changed: T Scaling: - Dynamic index: -
Unit group: - Unit selection: - Function diagram: -
Min:
0 Max:
3 Factory setting:
0
Description: Sets the configuration for the bypass function.
Value: 0: Bypass deactivated
3: Bypass without synchronization
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 Calculated: - Data type: Unsigned32
Can be changed: - Scaling: - Dynamic index: -
Unit group: - Unit selection: - Function diagram: -
Min:
- Max:
- Factory setting:
-
Parameters
7.2 Parameter list
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
659