SmartFlex SR305
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 10: Connection of power connector
Figure 27: 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!
The router can be put into low power mode using a special command
lpm
. It can then be
awakened, for example, by an activity on binary input or using an internal timer. Consumption
in LPM mode may vary depending on the configuration of the router.
Circuit example:
Figure 28: 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.
20
