Operating Power Modules From An Unregulated Infeed - Siemens 6SN1123-1AA00-0DA2 Configuration Manual

5 Power Modules

5.5 Operating power modules from an unregulated infeed

5.5 Operating power modules from an unregulated infeed
5-134
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
U
ZK
< 1
1.5 x V
N motor
then, only the following continuous power is available

P = P
continuous N
1.5 x V
V should, for the particular motor, be taken from the appropriate docu-
N motor
mentation (refer to Appendix, References).
As a result of the lower DC link voltage, it is possible that motor rated speeds
will no longer be able to be reached, refer to Engineering the motors. In this
case, the speed of the motors, and therefore the power, must be appropriately
reduced.
Power P
Fig. 5-10 Speed/power graph
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
= line voltage  1,35
U
U
DC link
ZK
U = 436 V
DC link
N motor
for 360 V –10 % line voltage
U = 486 V
DC link
for 400 V –10 % line voltage
S6
S1
Motor power limit with
1
I/R module
Motor power limit with
2
UI module
© Siemens AG 2012 All Rights Reserved
02.12 05.08 10.04
05.01
1
2
Speed n