Siemens CU230P-2 DP - p1256[0...n] Vdc_min controller response (kinetic buffering); Vdc_min response; p1257[0...n] Vdc_min controller speed threshold; Vdc_min n_thresh; r1258 CO: Vdc controller output; Vdc_ctrl output; p1260 Bypass configuration; Bypass config

List of Parameters
Parameters
1-163
© Siemens AG 2009 All Rights Reserved
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 11/2009
Description: Sets the response for the Vdc_min controller (kinetic buffering).
Value: 0: Buffer Vdc until undervoltage, n<p1257 -> F07405
1: Buff. Vdc until undervolt., n<p1257 -> F07405, t>p1255 -> F07406
Dependency: Refer to: F07405, F07406
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 .
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 pre-control 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.
Value: 0: Bypass deactivated
3: Bypass without synchronization
Note: If the bypass function is selected ((p1260 > 0), then when the power unit restarts after POWER OFF, the state of
the bypass switch is evaluated. This means that after the ramp-up, it is possible to directly change into the standby
mode. This is only possible for p1267 = 1 (bypass using the control signal) and if the control command after the sys-
tem has been booted is still available (p1266). This function has a higher priority than the automatic restart function
(p1210). The "bypass" function can only be switched out again (p1260 = 0) if the bypass is not active or the bypass
function has a fault. The flying restart function must be activated (p1200).
Description: Control and feedback signals of the bypass switch.
Dependency: Refer to: p2369
Note: Control bits 0 and 1 should be interconnected to the signal outputs via which the switches in the motor feeder
cables should be controlled. These should be selected/dimensioned for switching under load.
p1256[0...n] Vdc_min controller response (kinetic buffering) / Vdc_min response
PM240 Access level: 3 Calculated: - Data type: Integer16
Can be changed: U, T Scaling: - Data set: DDS, p0180
Min Max Factory setting
0 1 0
p1257[0...n] Vdc_min controller speed threshold / Vdc_min n_thresh
PM240 Access level: 3 Calculated: p0340 = 1 Data type: FloatingPoint32
Can be changed: U, T Scaling: - Data set: DDS, p0180
Min Max Factory setting
0.00 [rpm] 210000.00 [rpm] 50.00 [rpm]
r1258 CO: Vdc controller output / Vdc_ctrl output
PM230
PM240
Access level: 3 Calculated: - Data type: FloatingPoint32
Unit: [Arms] Scaling: p2002 Data set: -
p1260 Bypass configuration / Bypass config
Access level: 2 Calculated: - Data type: Integer16
Can be changed: T Scaling: - Data set: -
Min Max Factory setting
0 3 0
r1261.0...7 CO/BO: Bypass control/status word / Bypass STW / ZSW
Access level: 2 Calculated: - Data type: Unsigned32
Unit: - Scaling: - Data set: -
Bit field: Bit Signal name 1 signal 0 signal FP
00 Command switch motor - drive Close Open -
01 Command switch motor - line supply Close Open -
05 Feedback signal switch motor - drive Closed Opened -
06 Feedback signal switch motor - line supply Closed Opened -
07 Bypass command (from p1266) Yes No -