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Descriptions and non-contractual illustrations in this document are given as an indication only.
ERCOGENER reserves the right to make any modification.
Dct_427_02
3.4 Power supply
If the battery option (S0431B) is present, the fact of removing the power supply +V
DC
will not
turn the modem OFF. For this, see the § 5.2 Turning the modem OFF
3.4.1
Power supply cables
The modem is powered with the cable supplied with the equipment (ERCOGENER reference: 4402304215).
(See ANNEX 1 - 4-pins Micro-FIT cable (Power supply))
The modem is protected by a fuse F2 A / 32 V directly assembled on the power cable supplied with the
modem.
The power cable supplied with the modem must be absolutely used; without this cable, the
modem will not be protected.
The pins 1 and 2 are used for the functions Input/Output. The power supply to the modem is
done only via the pins 4 (+V
DC
) and 3 (GND).
The modem must be powered by an external DC voltage.
The internal regulation is done by a DC/DC converter and allows the supply of all necessary internal DC
voltages.
The modem is also internally protected against voltage peaks of more than 32 VDC.
The following table describes the consequences of an overvoltage or drop of voltage on the modem.
3.4.2
Power V
DC
The following table describes the consequences of an overvoltage or drop of voltage on the modem.
Table 5 : Effects of power supply defect
Then:
▪ Voltage falls below 6.5V
▪ The functioning and the GSM communication are not
guaranteed.
▪ Voltage above 32V (Punctual
peaks)
▪ The modem guarantees its own protection.
▪ Voltage above 32V (Continuous
overvoltage)
▪ The modem is protected by the fuse assembled on
the power supply cable.