Siemens SCALANCE X-300 Series Compact Operating Instructions page 63

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