Why don't the targets or trip led work properly – Basler Electric BE1-11m User Manual
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Why don't the targets or trip LED work properly?
If a protective element is tripping at the desired level, but the targets aren't behaving as expected, use
BESTCOMSPlus to verify that the targets are enabled for the protective function. Refer to the
chapter for detailed information about targets.
Trip LED behavior depends on the pickup and trip expression of the protective function. When the
functions pickup expression is true and the trip expression is false, the Trip LED flashes. In other words, a
flashing LED means that a protection element is in a picked up state and is timing toward a trip. When
both the pickup and trip expression is true, the Trip LED lights steadily. The Trip LED also lights steadily
when neither expression is true but latched targets exist. When resetting a target, the Trip LED will not
turn off if the fault is still present. The truth table of Table 189 serves as an aid to interpreting Trip LED
indications.
Table 189. Trip LED Truth Table
Trip
Pickup
Targets
Trip LED
No
No
No
Off
No
No
Yes
On
No
Yes
No
Flash
No
Yes
Yes
Flash
Yes
No
No
On
Yes
No
Yes
On
Yes
Yes
No
On
Yes
Yes
Yes
On
BE1-11m
Troubleshooting