7
05.01
7.3 Line supply fuses, transformers and main switch
7-219
© Siemens AG 2008 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) -- 05/2008 Edition
Note
If the objective is that an application is not to have a leading contact over the
complete power range of the infeed modules, then this can be implemented
using the following measures:
S Changing over from any present I/R modules to unregulated infeed (this is
generally the case for 480 V applications).
S Deactivating the regenerative feedback if I/R modules are being used.
The I/R modules then operate as UI modules and can be operated with
additional loads connected to a switching element without leading contact.
For the configurations that are now described, a leading contact for the s witch-
ing element is absolutely necessary:
S If one or more I/R modules are c onnected, together with other loads, through
a switching element.
S If NE modules having different power classes are connected together to one
switching element. In this case, the restrictions, described on the following
page, must be carefully fulfilled.
The following diagram shows two examples where a leading contact is abso-
lutely necessary.
I/RF module I/RF module
Further
consumers
I/RF module
16 kW
I/RF module
120 kW
UI module
10 kW
Switching element with
leading contact
Switching element with
leading contact
Fig. 7-9 Examples of a configuration where a leading contact is required
Leading contact is
absolutely
necessary
7L
ne Su
l
Connec
on02.03
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