CAUTION!
It is not allowed to connect any active voltage to the trip coil output or to the output (ag
indicator / relay output).
The two outputs may be connected at the same time to test equipment (e. g. to binary
inputs of an Omicron
©
device) only if these two binary inputs do not share a common
potential. Otherwise this external potential bridge, together with device-internal circuits,
can produce incorrect test results.
CAUTION!
For a WIC1‑4, it is also necessary that the congured operating mode matches the
connected hardware!
(For example, it is not permissible to connect a ag indicator and set the operating mode
to “Syst. O.K. & Ext.Suppl.”. See also the related Self-Supervision warnings SW 3, SW 4.)
Moreover, the electrical energy that an output relay drains with operating mode “Syst.
O.K. & Ext.Suppl.” requires that the WIC1‑4 is supplied by an external auxiliary voltage.
WIC1 Settings
The “TC” (Trip Coil) output is always mapped to the trip command, i. e. to the digital
signal »Prot . TripCmd«. (See also ╚═▷ “4.1 »Prot« – General Protection Module”.)
For measuring the trip delay, the “FI” (Flag Indicator) ouput is set as follows:
•
[Device Para / WIC1 / Output] »Prot . Out. assign.« = “Prot . Pickup”
•
Testing Device Settings
Finally, you can use the operating software of your testing device to measure the time-span
between the two digital inputs. This is straight-forward for all recent testing devices.
202 WIC1 WIC1-1.0-EN-MAN
7 Commissioning
7.4 Measuring the Trip Delay
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