Siemens SCALANCE W774-1

Technical data
7.2 Technical specifications W774 M12
SCALANCE W774-1 /W734-1
Operating Instructions, 01/2017, C79000-G8976-C325-08
57
Electrical data
Power supply Supply voltage from terminal
block/socket
24 VDC Safe Extra Low Voltage (SELV)
Permitted range
• +/- 20 %
• +/- 30 %
• 19.2 to 28.8 VDC (meets UL require-
ments)
• 16.8 to 31.2 VDC
Design
M12 socket
Properties Electrically isolated, redundant design
PoE to 24 VDC non-redundant design
Supply voltage from PoE
48 VDC
Permitted range
36 to 57 VDC
Fusing
2 A / 24 VDC
1 A / 48 V PoE
Current consumption
At 24 VDC / typical
250 mA
With PoE / typical
125 mA
Power loss at 24 VDC
At 24 VDC / typical
6 W
With PoE / typical
6 W
Permitted ambient conditions
Ambient temperature During operation with the rack in-
stalled horizontally
-30 ℃ to +65 ℃
During operation with the rack in-
stalled vertically
-30 ℃ to +65 ℃
During storage -40 ℃ to +85 ℃
During transportation -40 ℃ to +85 ℃
Relative humidity During operation ≤ 95% at 25 °C, no condensation
Operating altitude During operation ≤ 2,000 m above sea level at max. 60 °C
ambient temperature
Contaminant concentration According to IEC 60721
Design, dimensions and weight
Degree of protection
IP30
Weight
520 g
Dimensions (W x H x D) 26 x 156 x 127 mm
(height without antenna connector 147 mm)
Installation options
• Wall mounting
• Installation on a DIN rail
• Installation on an S7-300 standard rail
• Installation on an S7-1500 standard rail
Mean time between failure (MTBF)
at 40 °C ambient temperature
61.85 years
*
)
The PoE class depends on the hardware version of the device. Devices with a hardware
version ≥ 2 have PoE class 2. Devices with a lower hardware version have PoE class 3.