4
05.01
4.5 Operating power modules from an unregulated infeed
4-96
© Siemens AG 2008 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) -- 05/2008 Edition
4.5 Operating power modules from an unregulated infeed
The drive modules can be operated from both unregulated and regulated supply
modules belonging to the SIMODRIVE 611 drive converter system. The engi-
neering and power data of this Configuration Manual refer to operation with the
regulated infeed/regenerative feedback modules. This data should be cor-
rected, if required, when operated from unregulated infeed modules.
Operating drive modules with PH and 1FE1 motors and induction motors
from an unregulated infeed
When operation is with an unregulated infeed (e.g. UI module or unregulated
operated I/R module), a lower maximum motor output is available in the upper
speed range than with the use of the infeed/regenerative feedback module.
As a result of the low DC link voltage of 490 V (for a line supply infeed with
400 V 3--ph. -- 10%) for the UI module or unregulated operated I/R module, the
available continuous output is given by:
If
<1
U
ZK
1.5 x V
N motor
then, only the following continuous power is available
P
continuous
=P
N
¯
U
ZK
1.5 x V
N motor
V
DC
= 490 for UI modules
V
DC
= 600 for I/R modules
V
N motor
should, for the particular motor, be taken from the appropriate docu-
mentation (refer to Appendix, References).
Power P
Speed n
Motor power limit with
I/R module
Motor power limit with
UI module
S6
S1
1
1
2
2
Fig. 4-10 Speed/power graph
4Powe
Mo
ule
10.0405.08
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