INS_CNFE3TX2CXMS(U,E)_REV– Rev. 7.11.18 PAGE 12
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CNFE3TX2CXMS(U,E)
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3.3 Wiring
WARNING: Be sure to switch off the power and make sure the area is not hazardous before
disconnecting modules or wires. The devices may only be connected to the supply voltage
shown on the type plate.
3.3.1 Grounding
Grounding and wire routing help limit the effects of noise due to electromagnetic interference
(EMI). Run the ground connection from the ground screw to the grounding surface prior to
connecting devices.
3.3.2 Dual Power Inputs
The router has two sets of power inputs, power input 1 and power input 2, on a 4-pin terminal
block on the router’s top panel. Follow the steps below to wire redundant power inputs.
Step 1: insert the negative/positive DC wires into the V-/V+ terminals, respectively. Step 2: to
keep the DC wires from pulling loose, use a small flat-blade screwdriver to tighten the wire-clamp
screws on the front of the terminal block connector.
Note: besides power input, the router can also be powered by a PoE PSE such as switch via its
PoE-enabled LAN port.
ATTENTION
1.
Be sure to disconnect the power cord before installing and/or wiring your routers.
2.
Calculate the maximum possible current in each power wire and common wire. Observe
all electrical codes dictating the maximum current allowable for each wire size.
3.
If the current goes above the maximum ratings, the wiring could overheat, causing serious
damage to your equipment.
4.
Use separate paths to route wiring for power and devices. If power wiring and device
wiring paths must cross, make sure the wires are perpendicular at the intersection point.
5.
Do not run signal or communications wiring and power wiring through the same wire
conduit. To avoid interference, wires with different signal characteristics should be routed
separately.
6.
You can use the type of signal transmitted through a wire to determine which wires should
be kept separate. The rule of thumb is that wiring sharing similar electrical characteristics
can be bundled together
7.
You should separate input wiring from output wiring
8.
It is advised to label the wiring to all devices in the system
