Siemens SINAMICS S120 Manual page 390

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9.35 L87, insulation monitoring
Removal of the connection clip to the interference suppression capacitor for operation in an IT system
When operating the devices in an IT system, the connection clip to the interference
suppression capacitor must be removed in the following Cabinet Modules:
● Basic Line Connection Modules
● Active Line Connection Modules (connection clip in the Active Interface Module)
For the positions of the connection links in the respective Cabinet Modules, see Chapter
"Connection of the Cabinet Modules to non-grounded systems (IT systems)".
Controls and displays on the insulation monitor
Figure 9-38
Table 9- 57
Item
1
2
3
4
5
6
7
390
Controls and displays on the insulation monitor
Meaning of the controls and displays on the insulation monitor
Meaning
INFO key: To request standard information/
ESC key: Back menu function
TEST key: Call up self-test/
Arrow key up: Parameter change, scrolling
RESET button: Delete insulation and error messages (A-Isometer only)
Arrow key down: Parameter change, scrolling
Menu key: Call up menu system/
Enter key: Confirm parameter change
Alarm LED 1 lights up: Insulation fault, first alarm threshold reached
Alarm LED 2 lights up: Insulation fault, second alarm threshold reached
LED lights up: System error present
Cabinet Modules liquid cooled
Manual, 10/2015, A5E37067587A