List of Parameters
Parameters
1-159
© Siemens AG 2009 All Rights Reserved
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 11/2009
Description: Sets the starting speed for DC braking.
If the actual speed falls below this threshold, then DC braking is activated.
Dependency: Refer to: p1230, p1231, p1232, p1233, r1239
Description: Status word of the DC brake.
Dependency: Refer to: p1231, p1232, p1233, p1234
Description: Sets the controller configuration of the DC link voltage (Vdc controller) in the closed-loop control mode. For V/f con-
trol: see p1280.
Value: 0: Inhib Vdc ctrl
1: Vdc_max controller enable
3: Vdc_min controller and Vdc_max controller enable
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.
p1234[0...n] Speed at the start of DC braking / DCBRK n_start
PM240 Access level: 2 Calculated: - Data type: FloatingPoint32
Can be changed: U, T Scaling: - Data set: MDS
Min Max Factory setting
0.00 [rpm] 210000.00 [rpm] 210000.00 [rpm]
r1239.8...11 CO/BO: DC brake status word / DC brake ZSW
PM240 Access level: 2 Calculated: - Data type: Unsigned32
Unit: - Scaling: - Data set: -
Bit field: Bit Signal name 1 signal 0 signal FP
08 DC brake active Yes No 7017
10 DC brake ready Yes No 7017
11 DC brake selected Yes No -
p1240[0...n] Vdc controller or Vdc monitoring configuration (vector control) / Vdc_ctr config vec
PM230 Access level: 3 Calculated: - Data type: Integer16
Can be changed: U, T Scaling: - Data set: DDS, p0180
Min Max Factory setting
0 3 1
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