2 Installation
2.7 Connecting the power supply
34
Gateway XN-312-GW-CAN
06/16 MN050003-EN www.eaton.eu
2.7 Connecting the power supply
The gateway and the modules are powered using the X3 terminals. The gate-
way uses the voltage at X3 to produce the 5-V supply voltage for the mod-
ules on the system bus, with the maximum output current being 1.6 A.
Moreover, the gateway uses the voltage at X3 to produce the 24-V supply
voltage for the following system bus modules, with the maximum output
current being 1.6 A:
•
Analog module
•
Technology modules
In order for XN300 slice modules with terminals for an external power supply
to be able to perform their specified functions, they must be supplied with an
external 24 VDC voltage.
Take into account the total power consumption and the voltage drop on your
system bus and, if necessary, include additional XN-322-4PS-20 power sup-
ply modules. You can use the XN300-Assist software program for assistance
with the corresponding calculations. In addition, the program will automati-
cally let you know if additional power supply modules are required for your
design.
Figure 21:
Connection of power supply
DANGER
In safety-relevant applications the power supply providing
power to the XN300 system must feature a PELV power supply
unit (protective extra low voltage).
DANGER
The gateway has protection against polarity reversal for the 24 V
DC POW supply. If, however, the gateway is connected to a
grounded device, e.g., a computer, via the diagnostic interface,
the gateway may be destroyed if the polarity of the power sup-
ply is reversed!
3 mm
(0.12”)
F1
X3
U
e
= 24 V DC
(18 - 30 V DC SELV)
V+
V+
0 V
0 V
0 V
24 V DC
UL: F1 ≦ 2 A
IEC: F1 ≦ 3 A
I
e
≦ 2 A
Содержание XN-312-GW-CAN
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