Table 7-5 Electrical data: Power supply
Rated voltage
Safety extra-low voltage (SELV)
Voltage range Permitted voltage range
including total ripple
24 VDC 19.2 VDC - 28.8 VDC 18 VDC - 32 VDC
Table 7-6 Electrical data: Power consumption
Device variant Power loss at
24 VDC
Current consumption at
rated voltage 24 VDC
Overcurrent protection
at input (non-replacea‐
ble fuse)
X304-2FE 6.2 W 260 mA 3 A / 32 V
X306-1LD FE 4.8 W 200 mA 3 A / 32 V
X307-3,
X307-3LD,
X308-2,
X308-2LD,
X308-2LH,
X308-2LH+,
X310,
X310FE,
X320-1 FE
9.6 W 400 mA 3 A / 32 V
X320-3LD FE 12 W 500 mA 3 A / 32 V
Table 7-7 Electrical data: Signaling contact
Voltage via signaling contact 24 VDC
Switching capacity (resistive load) max. 100 mA
Resistor between F1-F2 < 8 Ω
Table 7-8 Plug-in terminal block for connectors of the power supply and signaling contact
Power supply 1 x 4-pin
Signaling contact 1 x 2-pin
Table 7-9 Electrical data: Transmitter output (optical) and receiver input
Device variant Transmitter output (optical) Receiver input
min. [dBm] max. [dBm] Sensitivity min. [dBm] Input power max.
[dBm]
X304-2FE -19 -14 -32 -3
X306-1LD FE -15 -8 -34 -3
Technical data
7.2 Connectors and electrical data
SCALANCE X-300
Compact Operating Instructions, 11/2019, A5E00982643-18 63
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