Siemens 6SN1123-1AA00-0DA2 Configuration Manual page 230

02.03 05.08
05.01
Summary
Table 7-13 Using a leading contact for SIMODRIVE units
Unit connected to Leading con-
the switching ele- tact
ment required
Only UI modules –
Only UI modules with
–
additional loads
Only I/R modules
(without additional
loads) –
Only modules that
can regenerate into
n
the line supply with
additional loads
I/R modules together
with UI modules
– –
I/R modules together
n
with UI modules and
additional loads
© Siemens AG 2012 All Rights Reserved
SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
7.3 Overcurrent protective devices, transformers and main switch
Remarks
No leading
contact
n
–
n
–
The appropriate
restrictions must
n
be carefully ob-
served.
– –
It is necessary to
use overvoltage
limiter modules.
n n
The appropriate
restrictions must
be carefully ob-
served.
– –
7 Line Supply Connection
Risks
–
–
If these restrictions are not carefully ob-
served, then smaller rating modules can
be destroyed by the modules that are
presently regenerating when the switching
element is opened.
If a leading contact is not used, then the
additional connected loads could be de-
stroyed by overvoltages
If an overvoltage limiter module is not
used, when the switching element is
opened the module could be destroyed by
other modules that are regenerating at that
time.
If these restrictions are not carefully ob-
served, then smaller rating modules can
be destroyed by the modules that are
presently regenerating when the switching
element is opened.
If a leading contact is not used, then the
additional connected loads could be de-
stroyed by overvoltages.
7
7-229