Power Connector Pwr; Power Connector; Connection Of Power Supply; Connection Of Power Connector - Advantech LR77 v2 Libratum User Manual

5.7.2 Power connector PWR

Panel socket 2-pin.
Pin number Signal mark
1 VCC(+)
2 GND(-)
Power supply for router is required between +9 V to +36 V DC supply. Protection against
reversed polarity without signaling is built into the router. Note: The protection against re-
versed polarity is lost if the negative pole is grounded!
The power consumption during receiving is 2.3 W. The peak power consumption during
data sending is 5.5 W. However, values of consumption can be increased, if some expansion
port is eqquipped. For correct operation it is necessary that the power source is able to supply
a peak current of 1.2 A.
If the negative pole of the router is grounded, there is no protection against reversed
polarity!
Circuit example:
The positive pole VCC is marked by a red socket on the power.
All metal parts are connected together with the negative pole of power supply (common pole).
However, the router box may not be connected to the negative pole properly.
Description
Positive pole of DC supply voltage (+9 to +36 V DC)
Negative pole of DC supply voltage
Table 10: Connection of power connector
Figure 18: Power connector
Figure 19: Connection of power supply
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LR77 v2 Libratum