25
Reference Manual
00809-0200-4410, Rev BA
Section 3: Mounting and connection
February 2014
Mounting and connection
Figure 3-8. Typical Half Duplex (2-wire) Network
3.4.5
Power
The Gateway is designed to be powered by 24 VDC (nominal) Class 2 supply and requires 250
mA of current. The positive and negative connections are depicted on the diagram shown in
Figure 3-6 on page 24
.
The wiring should include an external power shut-off switch or circuit breaker that is located
near the Gateway.
Note
Using an uninterruptible power supply (UPS) is recommended to ensure availability should there
be a loss of power.
Up to 4000 ft. (1220 m)
Device 1
Device 2
A
B
Terminators required
only for high data rates
and long cable runs
Device N
(up to 32
possible)