Short Circuit And Overload - roco Z21 Benutzerhandbuch

Operation - Driving and Switching
you can also program new values for CV 2, 3, 4 and 5 as shown in this example. To do so, you simply
press the MENu-key together with the function key with the number corresponding to the CV and
then proceed as in the above example.
If you set value "8" in CV8 (no other value is necessary), all CVs of the decoder are reset to fac-
tory values. Since this procedure is not supported by all decoders, you should consult the decoder's
manual for additional information.
If you experience programming problems, please read Part 3 "Menus" or the Chapter "Tips, Informa-
tion, and Shortcuts" in Part 5 for additional help

2.7 Short Circuit and Overload

If a system short circuit or overload occurs, the Z21-digital system indicates this in two different ways.
Two symbols flash in the display of the WLANmaus, namely a lightning or thunderbolt symbol and
the STOP sign. The red LED flashes on the Z21. The power supply to the system is disconnected at the
same time.
If there is a short circuit, e.g. because of a derailed coach or train, eliminate the fault.
Press the STOP-key of the WLANmaus or the white key of the Z21 to switch the system back on with
a delay of approx. one second.
If the fault is not a short circuit, the cause may be an overload of the system due to the simultaneous
operation of too many locomotives. If this occurs frequently, the power supply to your system is insuf-
ficient. This is fixed by connecting an additional booster). Never use a normal transformer connected
directly to the power supply input since this may destroy the Z21.
53
8010813920.indd 53 13.07.2017 10:27:47