In any case, it is advisable to ca
- Check that the burden of the
auxiliary voltage circuit falls
20VA as regards a.c. supply.
IEC127/II of 2A as regards unit with 19-100Vcc (or 19-72
auxiliary voltage, and of 1A as regards unit with 64-300Vcc (or
64-275Vca) auxiliary voltage.
- Apply a voltage signal to ba
r side and generator side
ensure that these correspond to the indicati
Check each output relay by following the procedure described
in the TEST MENU paragraph: simultaneously check the
relevant external circuit.
- Make sure that the digital input wiring corresponds to the one
provided for in the design plans.
If the relay has not worked correctl
y or indicates failures of VITAL
of order and sent back to the
Any NOT VITAL failure does not
however, it requires the type of fault to be analysed so as to
determine the relative entity (for instance, a
might be replaced with another not used or whose
ability of the devices makes it possible
to the protection diagram during any repairing action, replacing
the faulty device with one of the same type.
To complete the start-up stage, before setting the system at
- the device settings are consistent with the ones of the design
the device memories (leds, max. values, partial
and wear index) have been reset
- the Uaux and RUN green leds are lit
connection, the RxTx green led must also be lit
- the LEDs indicating labels and the general rating plate of the
device bear the correct information.
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