14
TB XRW1-4 04.01 E
5
Operation and setting
For adjustment of the unit the transparent cover has to
be opened as illustrated. Do not use force! The trans-
parent cover has two inserts for labels.
Fig. 5.1: How to open the transparent cover
5.1
Push buttons
Push buttons are used for calling up the parameters to
be processed, for selection of measuring parameters to
be indicated and for changing and storing the parame-
ters.
The individual setting and measuring values can be se-
lected one after another by pressing push button
<SELECT/RESET>. This push button is also used for re-
setting the display by pressing approx. 3s.
Push buttons <+> <-> are used for in-/decrementing of
the parameter indicated on the display. They can be
pressed step-by-step or continuously.
After the selected parameter is set by the <+> <-> push
button it may be stored using the <ENTER> push but-
ton.
Through the push button <ENTER> the set value indi-
cated on the display will be transfered to the internal
parameter memory. An unintented or unauthorized
change of the selected parameter is avoided by means
of a password identification (see 5.4.2).
The <TRIP>-push button is used to test the output relay
circuits both for tripping and signalling. During normal
operation it is also interlocked by means of the pass-
word identification.
