5. Specifications
5.1. Interface Specifications
DC, Power port
Rated voltage
a
Viper-x20A-PoE LV units: 24 to 38 VDC
Viper-x20A-PoE HV units: 48 to 110 VDC
Operating voltage
b
Viper-x20A-PoE LV units:
16.8 to 49.9 VDC (14.4 to 53.2 VDC for 100 ms)
Viper-x20A-PoE HV units:
33.6 to 143 VDC (28.8 to 154 VDC for 100 ms)
Rated current
Viper-x20A-PoE LV units: max 5.0 A at 24 VDC, max 3.2 A at 38 VDC
Viper-x20A-PoE HV units: max 2.6 A at 48 VDC, max 1.1 A at 110 VDC
Rated frequency
DC
Inrush current, I²t
Viper-x20A-PoE LV units: 580 mA
2
s at 24 VDC, 560 mA²s at 38 VDC
Viper-x20A-PoE HV units: 200 mA
2
s at 48 VDC, 160 mA²s at 110 VDC
Startup current
c
Viper-x20A-PoE LV units: 1.8 A at 16.8 VDC
Viper-x20A-PoE HV units: 750 mA at 33.6 VDC
Polarity
Reverse polarity protected
Redundant power input
No
Isolation
2250 VDC to all other ports
Circuit type
Secondary circuit hazardous voltage, OVC II
Connector
Viper-x20A-PoE LV units:
4-pin, male, M12, T-coded, recommended Westermo cable:
3146-1109 for 5 m
Viper-x20A-PoE HV units:
4-pin, male, M12, A-coded, recommended Westermo cables:
3146-1106 for 1.5 m
3146-1107 for 5 m
Cable size
For Viper-x20A-PoE HV units:
M12, recommended power cable area 0.5 mm² (minimum 0.25 mm²),
which correlates to AWG 21 or larger
For Viper-x20A-PoE LV units:
M12, recommended power cable area 1 mm² (minimum 0.75 mm²),
which correlates to AWG 18 or larger
Cable dimensions depend on choice of M12 connector
Cable temperature rating
For minimum temperature rating of the cable to be connected to the field
wiring terminals: -40 to +70 °C
a
Also referred to as nominal voltage in EN/IEC 61010-1
b
Also referred to as nominal input including fluctuations in EN/IEC 61010-1
c
Recommended external supply current capability for proper startup
20
Viper 20A-PoE Series
Содержание 3635-1010
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