Siemens CU230P-2 HVAC Parameter Manual page 163

p1256[0...n] Vdc_min controller response (kinetic buffering) / Vdc_min response
PM240 Access level: 3
Can be changed: U, T
Min
0
Description: Sets the response for the Vdc_min controller (kinetic buffering).
Value: 0:
1:
Dependency: Refer to: F07405, F07406
p1257[0...n] Vdc_min controller speed threshold / Vdc_min n_thresh
PM240 Access level: 3
Can be changed: U, T
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 .
r1258 CO: Vdc controller output / Vdc_ctrl output
PM230 Access level: 3
PM240
Unit: [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 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.
p1260 Bypass configuration / Bypass config
Access level: 2
Can be changed: T
Min
0
Value: 0:
3:
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).
r1261.0...7 CO/BO: Bypass control/status word / Bypass STW / ZSW
Access level: 2
Unit: -
Description: Control and feedback signals of the bypass switch.
Bit field: Bit Signal name
00 Command switch motor - drive
01 Command switch motor - line supply
05 Feedback signal switch motor - drive
06 Feedback signal switch motor - line supply
07 Bypass command (from p1266)
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.
© Siemens AG 2009 All Rights Reserved
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 11/2009
Buffer Vdc until undervoltage, n<p1257 -> F07405
Buff. Vdc until undervolt., n<p1257 -> F07405, t>p1255 -> F07406
Bypass deactivated
Bypass without synchronization
Calculated: -
Scaling: -
Max
1
Calculated: p0340 = 1
Scaling: -
Max
210000.00 [rpm]
Calculated: -
Scaling: p2002
Calculated: -
Scaling: -
Max
3
Calculated: -
Scaling: -
1 signal
Close
Close
Closed
Closed
Yes
Parameters
List of Parameters
Data type: Integer16
Data set: DDS, p0180
Factory setting
0
Data type: FloatingPoint32
Data set: DDS, p0180
Factory setting
50.00 [rpm]
Data type: FloatingPoint32
Data set: -
Data type: Integer16
Data set: -
Factory setting
0
Data type: Unsigned32
Data set: -
0 signal
Open
Open
Opened
Opened
No
FP
-
-
-
-
-
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