Siemens SENTRON 3WL10 - Operation; Manual Operation and Parameter Entry

Warning displays
Warning display 1 Warning display 2 Alarm / status Measure / comment
On
 Pre-alarm L, power 󹪞ow is greater
than 90% of the setting value I
r

Temperature alarm Lower the ambient temperature or
reduce the continuous operating
current.
Contact erosion > 80% Prompt maintenance and replace‐
ment of the circuit breaker re‐
quired
Line frequency outside the toler‐
ance
Check possible interference fac‐
tors.
I
n_pal
warning Pre-alarm threshold has been ex‐
ceeded.

Flashing fast
(2 Hz)
A warning is pending Press the control key "i Test" to dis‐
play a list of warning messages on
the display.
You can read what action to take in
response to which alarm in the ta‐
ble "LED displays of the protection
releases" (ETUs of the 3-series).
6.3 Troubleshooting
Note
If the circuit breaker is constantly tripping during operation, 󹪝rst check and correct the
protection functions (parameter settings).
Operation
6.3Troubleshooting
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
196 Equipment Manual, 10/2023, L1V30499596002-03