Co: Act. Dc-Link Voltage; Co: Max. Output Voltage; Co: Act. Output Voltage; Co: Act. Modulation - Siemens MICROMASTER 440 Parameter Manual

Issue 01/06
r0070

CO: Act. DC-link voltage

P-Group: INVERTER
Displays (unfiltered) DC-link voltage.
Note:
Used for process control purposes (in contrast to r0026 (actual DC-link voltage), which is filtered and is
used to display the value on the BOP/AOP).
r0071

CO: Max. output voltage

P-Group: CONTROL
Displays maximum output voltage.
V
r0071
V
max
(Inverter)
P0304
V
n
(Motor)
P, Φ
Dependency:
- The actual maximum output voltage depends on the actual incoming line supply voltage.
- The maximum possible output voltage r0071 of the drive inverter is determined by the DC link voltage
r0026 and the maximum modulation depth P1803 in the gating unit.
- The maximum output voltage r0071 is tracked with the DC link voltage so that the highest possible
value is always and automatically achieved.
- The output voltage only reaches the calculated maximum value under steady-state conditions at the
rated load.
- In the no-load and partial load ranges, lower output voltages r0025 are obtained.
r0072

CO: Act. output voltage

P-Group: CONTROL
Displays output voltage.
r0074

CO: Act. modulation

P-Group: CONTROL
Displays actual modulation index.
The modulation index is defined as ratio between the magnitude of the fundamental component in the
inverter phase output voltage and half of the dc-link voltage.
MICROMASTER 440 Parameter List
6SE6400-5BB00-0BP0
Datatype: Float
Datatype: Float
V = f(V ,MOD )
max dc max
V
out
(Inverter)
P0310
f
n
(Motor)
Power
Flux
~
Field weakening
Datatype: Float
Datatype: Float
Unit: V
Unit: V
1
f
Unit: V
Unit: %
Parameter Description
Level
Min: -
3
Def: -
Max: -
Level
Min: -
3
Def: -
Max: -
f
f
Level
Min: -
3
Def: -
Max: -
Level
Min: -
4
Def: -
Max: -
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