SmartFlex SR309
5.9.2
Power connector PWR
Panel socket 2-pin.
Pin number
Signal mark
Description
1
GND(-)
Negative pole of DC supply voltage
2
VCC(+)
Positive pole of DC supply voltage (+10 to +60 V DC)
Table 7: Connection of power connector
Figure 17: Power connector
Unit has to be supplied by a power supply specified as a Limited Power Source (LPS) ac-
cording to Annex Q of IEC 62368-1. If the power supply/cable provided with device is not
used, always use the cables with minimum wire size (nominal cross section) 0.5 square mm
for power supply.
The power supply for the router must be b10 V to +60 V DC supply. Protection
against reversed polarity without signaling is built into the router.
Note:
The protection against
reversed polarity is lost if the negative pole is grounded!
Circuit example:
Figure 18: Connection of power supply
Note for PoE:
See Chapter
for information on how PoE versions of the router
impact the power supply usage. The power supply for a PoE router has to meet other
specific requirements.
All metal parts are connected together with the negative pole of power supply (common pole).
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