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Appendix
14.1.3 Overvoltage
Edition 07/2007
If the voltage supply of the DTCO 1381 rises above the following
maximum value of the specified range, the DTCO 1381 switches to
the "overvoltage" mode:
•
12 V version: 17,5 V (min. 16,4 V; max. 18,6 V)
•
24 V version: 35,0 V (min. 33,0 V; max. 37,0 V)
To prevent damage, the internal power supply for the printer and
the card slots is switched off.
The following functions are not available:
•
Printing or display of data is not possible.
•
Insertion or removal of the tachograph cards is not possible.
As soon as the voltage supply of the DTCO 1381 falls once more to
below the following limit value into the specified range, the DTCO
1381 returns to the normal operating mode:
•
12 V version: 17,0 V (min. 15,9 V; max. 18,1 V)
•
24 V version: 34,0 V (min. 32,1 V; max. 35,9 V)
Afterwards the DTCO 1381 indicates "power interruption".
Technical Description DTCO 1381
14.1 Operating conditions of the DTCO 1381
14 - 5
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