Parameter list
7.2 Parameter list
SINAMICS V20 Inverter
174
Operating Instructions, 07/2012, A5E03728167
Parameter
Function
Range
Factory
default
Can be
changed
Scaling
Data
set
Data
type
Acc.
Level
Dependency: Compound braking depends on the DC link voltage only (see threshold above). This will happen on OFF1,
OFF3 and any regenerative condition. It is disabled, when:
•
DC braking is active
•
Flying start is active
Notice:
Increasing the value will generally improve braking performance; however, if you set the value too high, an
overcurrent trip may result.
If used with dynamic braking enabled as well compound braking will take priority.
If used with the Vdc_max controller enabled the inverter behavior when braking may be worsened
particularly with high values of compound braking.
Note:
P1236 = 0 means that compound braking is not activated.
P1237
Dynamic braking
0 - 5
0
U, T
-
-
U16
2
Dynamic braking absorbs the braking energy in a chopper resistor.
This parameter defines the rated duty cycle of the braking resistor (chopper resistor).
Dynamic braking is active when the function is enabled and DC-link voltage exceeds the dynamic braking
switch-on level.
Dynamic braking switch-on level (V_DC,Chopper) :
If P1254 = 0 --> V_DC,Chopper = 1.13 * sqrt(2) * V_mains = 1.13 * sqrt(2) * P0210
otherwise V_DC,Chopper = 0.98 * r1242
0
Disabled
1
5 % duty cycle
2
10 % duty cycle
3
20 % duty cycle
4
50 % duty cycle
5
100 % duty cycle
Note:
This parameter is only applicable for inverters of frame size D. For frame sizes A to C, the duty cycle of the
braking resistor can be selected with the dynamic braking module (see Appendix "Dynamic braking
Dependency: If dynamic braking is used with DC braking enabled as well as compound braking, DC braking and
compound braking will take priority.
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Содержание SINAMICS V20 Series
Страница 4: ...Preface SINAMICS V20 Inverter 4 Operating Instructions 07 2012 A5E03728167 ...
Страница 12: ...Safety instructions SINAMICS V20 Inverter 12 Operating Instructions 07 2012 A5E03728167 ...
Страница 232: ...Parameter list 7 2 Parameter list SINAMICS V20 Inverter 232 Operating Instructions 07 2012 A5E03728167 ...
Страница 274: ...Index SINAMICS V20 Inverter 274 Operating Instructions 07 2012 A5E03728167 ...