7-Segment Display - Siemens NCU 7x0.3 PN Series Manual

Description
3.4 Operator control and display elements
Additional references
● You can find a detailed description of LED states during power-up in the "NCU Operating
● For information on drive faults and alarms, see also:
3.4.3

7-segment display

Displaying messages
The 7-segment display is located behind the blanking plate of the Control Unit. It serves as a
status display during startup and performs the following tasks:
● Output of test and diagnostic messages.
● Output of status messages during booting
Critical messages
● During normal operation, "6" appears here and the dot flashes.
● An "8" indicates that the fan is defective or that the Control Unit is operating without a fan.
Additional references
Basic Software and Operating Software Commissioning Manual (IM7), Chapter "System
startup displays".
24
System (IM7)" section of the Basesoftware and Operating Software Commissioning
Manual.
SINAMICS S120/S150 List Manual (LH1)
NCU 7x0.3 PN
Manual, 09/2011, 6FC5397-1EP40-0BA0