Operating Instructions

Parameters
List of parameters
1-166
© Siemens AG 2008 - 2013 All Rights Reserved
SINAMICS G120 CU230P-2 Control Units List Manual (LH9), 01/2013
Description: Status word of the DC braking.
Dependency: Refer to: p1231, p1232, p1233, p1234
Note: Re bit 12, 13:
Only effective for p1231 = 14.
Description: Sets the controller configuration of the DC link voltage (Vdc controller) in the closed-loop control mode. For U/f con-
trol: see p1280.
Value: 0: Inhib Vdc ctrl
1: Enable Vdc_max controller
3: Enable Vdc_min controller and Vdc_max controller
Dependency: Refer to: p1245
Refer to: A07400, A07401, A07402, F07405, F07406
Notice: An excessively high value in p1245 can possibly negatively influence the normal operation of the drive.
Note: p1240 = 1, 3:
When the DC link voltage limit specified for the power unit is reached the following applies:
- the Vdc_max controller limits the regenerative energy in order that the DC link voltage is kept below the maximum
DC link voltage when braking.
- the ramp-down times are automatically increased. If overvoltage faults occur in spite of the Vdc_max controller
being active, the ramp-down time in p1121 might need to be increased.
- set the input voltage p0210 as low as possible in line with the supply voltage (in so doing avoid A07401).
p1240 = 3:
When the switch-in threshold of the Vdc_min controller is reached (p1245), the following applies:
- the Vdc_min controller limits the energy taken from the DC link in order to keep the DC link voltage above the min-
imum DC link voltage when accelerating.
- the motor is braked in order to use its kinetic energy to buffer the DC link.
- the Vdc_min controller cannot be used when the line voltage is permanently below 380 V (if required, p1247
should be reduced).
r1239.8...13 CO/BO: DC braking status word / DCBRK ZSW
Access level: 2 Calculated: - Data type: Unsigned32
Can be changed: - Scaling: - Dyn. index: -
Units group: - Unit selection: - Func. diagram: -
Min Max Factory setting
- - -
Bit field: Bit Signal name 1 signal 0 signal FP
08 DC braking active Yes No 7017
10 DC braking ready Yes No 7017
11 DC braking selected Yes No -
12 DC braking selection internally inhibited Yes No -
13 DC braking for OFF1/OFF3 Yes No -
p1240[0...n] Vdc controller configuration (vector control) / Vdc_ctr config vec
PM230 Access level: 3 Calculated: - Data type: Integer16
Can be changed: U, T Scaling: - Dyn. index: DDS, p0180
Units group: - Unit selection: - Func. diagram: 6220
Min Max Factory setting
0 3 1