Electrical Installation 11/03
SINAMICS G150
4-16 Operating Manual
4.7 External Supply of the Auxiliary Supply from a Secure
Line
Description
An external auxiliary supply is always recommended when communication and
closed-loop control are to be independent of the main supply system or an
automatic restart function, for example, is activated. An external auxiliary supply is
particularly recommended for low-power lines susceptible to short-time voltage dips
or power failures.
Note the optional version of the cabinet unit. Different connection options are
available depending on the options selected.
Table 4-7 Connection options for the external auxiliary voltage depending on the selected options.
External supply of auxiliary voltage independent of the main supply
Cabinet unit option
24 V DC
terminal –X9
230 V AC
terminal –X40
24 V DC
(terminal –X9)
230 V AC
(terminal –X40)
*1)
230 V AC (terminal –X40)
with options L13 / L26
(when I > 800 A)
- With no further
options
- Version C
X
L13 X
L26 (when I > 800 A) X
L83 X X
L84 X X
L86 X X
L87 X X
*1)
This is required when not only the open and closed-loop control but also the 230
V AC consumer (thermistor motor protection, PT100 evaluation unit, or insulation
monitor) is to remain in operation if the main supply fails.
With an external supply independent of the main supply, warnings and fault
messages may still be displayed on the operator panel and internal protection and
monitoring devices if the main supply fails.
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