5
05.01
5.5 Operating power modules from an unregulated infeed
5-135
©
Siemens AG 2012 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
Reader’s note
Selecting the power rating for UI modules, refer to Chapter 6.7.5.
For the 28 kW UI, the pulsed resistors must be separately ordered and external-
ly mounted.
For higher regenerative feedback powers, a separate braking resistor module
must be provided or the regenerative power reduced by using longer braking
times.
Operating drive modules with 1FT6, 1FK and 1FN motors on uncontrolled
infeeds
As a result of the lower DC link voltage of 490 V
1)
for the UI module (600 V for
the I/R module), under certain circumstances, the following restrictions must be
expected:
S
Reduction of the dynamic drive properties in the upper speed/velocity range
S
Lower utilization of the rated motor speed/velocity if the requirement relating
to overload is kept
1) For a line supply infeed with 3–ph. 400 V AC –10%.
5 Power Modules
10.04
02.12