Chassis Format - Siemens SINAMICS S120 System Manual

Device overview
8.3 Active Interface Modules, air-cooled
The Active Interface Module is fitted with a fan. The 24 V supply is essential for operating the
component. The temperature signaling contact must also be connected to the Active Line
Module.
You can find a description of the air-cooled Active Interface Modules in the Booksize power
units manual (http://support.automation.siemens.com/WW/view/en/99687925).
8.3.2

Chassis format

Active Interface Modules are used in conjunction with the Active Line Modules in chassis
format. The Active Interface Modules contain a Clean Power Filter with basic RI suppression,
the pre-charging circuit for the Active Line Module, the line voltage sensing circuit and
monitoring sensors.
Frame size GI is equipped as standard with a bypass contactor. which ensures a highly
compact design. The bypass contactor must be provided separately for frame sizes HI and
JI.
The vast majority of line harmonics are suppressed by the Clean Power Filter.
The Active Interface Module contains:
● Clean Power Filter
● Line reactor
● Pre-charging circuit
● Bypass contactor (for frame size GI)
● Grid voltage sensing module VSM10
● Fan
You can find a description of the air-cooled Active Interface Modules in the Air-cooled
chassis power units manual
(http://support.automation.siemens.com/WW/view/en/92323898).
Note
Modified grid connection voltage
The permissible grid connection voltage of the Active Interface modules for 3 AC 380 ... 480
V for operation for the grid infeed is:
3 AC 320 V -10 % (-15 % < 1 min) ... 3 AC 480 V +10 %
UL approval is only applicable for the restricted voltage range 380 V -10 % (-15 % < 1 min)
... 3 AC 480 V +10 %, which, for this reason, is specified together with the UL approval on
the type plate.
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System Manual, 04/2015, A5E03347436A
Grid infeed