Commissioning
5.6 Function commissioning
SINAMICS V20 Inverter
74
Operating Instructions, 07/2012, A5E03728167
The continuous power P
DB
and the duty cycle for the braking resistor can be modified using
the dynamic braking module (for frame size A / B / C) or parameter P1237 (for frame size D).
WARNING
The average power of the braking chopper cannot exceed the power rating of the braking
resistor.
t
t
P
DB
P
100
t
ON
t
OFF
F\FOH
'\QDPLFEUDNLQJVZLWFKRQOHYHO
9
'&&KRSSHU
3
ຘ
ຘ3
9
'&&KRSSHU
3
ำ
ຘ U
Duty cycle
t
ON
(s)
t
OFF
(s)
t
cycle
(s)
P
DB
5%
12.0
228.0
240.0
0.05
10%
12.6
114.0
126.6
0.10
20%
14.2
57.0
71.2
0.20
50%
22.8
22.8
45.6
0.50
100%
Infinite
0
Infinite
1.00
Setting parameters
Parameter
Function
Setting
P1237
Dynamic braking
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.
= 0: Disabled (factory default)
= 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.
P1240[0...2]
Configuration of Vdc controller
This parameter enables / disables Vdc controller.
= 0: Vdc controller disabled
Note: This parameter must be set to 0 (Vdc controller
disabled) to activate the dynamic braking.
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 ...