Connecting Power; Poe Power Requirements - Siemens SIMATIC NET RUGGEDCOM RST916P Equipment Manual

2.5

Connecting Power

The RUGGEDCOM RST916P features two input terminals that allow the device to be
powered by two independent DC power sources. Each power source must provide 54
VDC nominal output voltage.
Note
The RUGGEDCOM RST916P is a dual input power supply system. Due to this
structure, induced voltages will be observed between the positive and chassis/ground
terminals, and between the negative and chassis/ground terminals.
Electrical hazard – risk of power disruption
Due to power supply safety features, some DC voltage will be coupled to the
redundant power terminals (between the positive and chassis/ground terminals, and
between the negative and chassis/ground terminals). While the maximum amount
of current transfer is below the safety threshold, it may be enough to trip some
external Ground Fault Circuit Interrupter (GFCI) breakers. Before connecting power,
review the installation and make sure this condition can be supported.
Note
•
•
2.5.1

PoE Power Requirements

The RUGGEDCOM RST916P provides Power-over-Ethernet to devices connected to
ports 1 through 10. Requirements for the external power source(s) are dependent on
the IEEE 802.3 standard required by the application:
Standard
802.3af/
at (Type 1)
802.3at
(Type 2)
802.3bt
(Type 3)
RUGGEDCOM RST916P
Equipment Manual, 11/2023, C79000-G8976-1489-06
NOTICE
Use minimum #16 gage copper wiring when connecting terminal blocks.
Equipment must be installed according to applicable local wiring codes and
standards.
Watts/Port Power
Output Supply
Type
IEEE 15
IEEE 30
IEEE 60
Input Range
Minimum Maximum
DC 52 VDC 57 VDC
DC 52 VDC 57 VDC
DC 52 VDC 57 VDC
Installing the Device
2.5 Connecting Power
Isolation Maximum Maximum
PoE Power
Required
1.5 150 W
VAC/2.2
kVDC
1.5 300 W
VAC/2.2
kVDC
1.5 420 W
VAC/2.2
kVDC
System
Power
Required
180 W
330 W
450 W
15