SmartFlex SR300
5.8.2
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 11: Power connector
Unit has to be supplied by a power supply specified as a Limited Power Source (LPS) ac-
cording to clause 2.5 of IEC/UL 60950-1 or CEC/NEC Class 2 source of supply as defined
in the Canadian Electrical Code, CSA C22.1 and National Electrical Code, ANSI/NFPA 70. 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 12: Connection of power supply
Note for PoE:
See Chapter
5.8.6
for information on how PoE versions of the router
impact the power supply usage. The power supply for a PoE PSE router has to meet
other specific requirements.
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