Siemens 6SN1123-1AA00-0DA2 Configuration Manual page 162

02.12
05.01
Display, line fault
If a line fault is displayed or if the yellow LED does not light, the overvoltage
limiter module must be checked.
Procedure:
1. Switch the unit into a no–voltage condition
2. Withdraw the overvoltage limiter module and insert connector X181 on the
Note
Operation can continue, but without overvoltage protection when the
overvoltage limiter module is withdrawn and connector X181 has been
removed from the NE module!
Operation without overvoltage limiter module is not in conformance with UL!
3. Insert a new overvoltage limiter module up to its endstop and reinsert con-
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SIMODRIVE 611 Configuration Manual (PJU) – 02/2012 Edition
NE module.
Does the NE module function correctly?
Yes ––> The overvoltage limiter module is defective and
must be replaced.
No ––> Check the line supply and possibly the NE module/group.
nector X181 on the overvoltage limiter module.
6 Infeed Modules
6.2 Interface overview
6-161
6