Conel CDA 70, Руководство пользователя

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CDA70 MODEM DESCRIPTION
14
2.5.6.
Power supply connector (PWDD)
Pin
number
Signal mark Description
1 +12V Positive pole of supply voltage
2 GND Negative pole of supply voltage
3 PWRSV Open collector output (Power Save) for controlling of supply voltage
of the whole radio modem, see chapter 3.4
4 IN1 Input -power failure supervision. (Analogue input 0-16V)
On the power supply connector it is possible to use the signal INAC (NAP230) for
present AC voltage monitoring for power supply (it can be functional only in case of supply
accumulator backup).
Beware, on INAC (NAP230) input it isn't possible connect link voltage 230 V direct!
Circuit example:
DC supply
Pin 1 – +12V
DC
Pin 2 – GND
Modem CDA70
+
Pin 3 – PWRSV
Pin 4 – INAC
DC supply with backup battery with present supply monitoring
Modem CDA70
DC
+
Pin 1 – +12V
Pin 2 – GND
Pin 3 – PWRSV
Pin 4 – INAC