Siemens 440 - Manual (Page 39)

Issue 01/06 Parameter Description
MICROMASTER 440 Parameter List
6SE6400-5BB00-0BP0
39
r0070 CO: Act. DC-link voltage Min: -
Datatype: Float Unit: V Def: -
P-Group: INVERTER Max: -
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 Min: -
Datatype: Float Unit: V Def: -
P-Group: CONTROL Max: -
Displays maximum output voltage.
V
max
= f(V
dc
,MOD
max
)
(Inverter)
(Motor)
r0071
V
max
Power
Field weakening
f
f
f
1
~
Flux
P, Φ
P0304
V
n
P0310
f
n
V
(Motor)
(Inverter)
V
out
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 Min: -
Datatype: Float Unit: V Def: -
P-Group: CONTROL Max: -
Displays output voltage.
r0074 CO: Act. modulation Min: -
Datatype: Float Unit: % Def: -
P-Group: CONTROL Max: -
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.
Level
3
Level
3
Level
3
Level
4