User Manual

UC-2100 Series Hardware Connection Description
3-2
Wiring Requirements
In this section, we describe how to connect various devices to the embedded computer. You should heed the
following common safety precautions before proceeding with the installation of any electronic device:
• 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.
NOTE: Do not run signal or communication wiring and power wiring in the same wire conduit. To avoid
interference, wires with different signal characteristics should be routed separately.
• 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 that shares similar electrical characteristics can be bundled together.
• Keep input wiring and output wiring separate.
• When necessary, it is strongly advised that you label wiring to all devices in the system.
ATTENTION
Safety First!
Be sure to disconnect the power cord before
doing installations and/or wiring.
Electrical Current
Caution!
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.
If the current goes above the
maximum ratings, the wiring could overheat, causing serious damage to your
equipment.
Temperature Caution!
Be
careful when handling the unit. When the unit is
plugged in, the internal components generate heat, and
consequently the
outer casing may feel hot to the touch.
Connecting the Power
Terminal Block
Connect the 9 to 48 VDC power line to the terminal block connector
on the UC-
2100 Series
computer. If the power is supplied properly, the “Power” LED will glow a solid green. The
power input location and pin definition are shown in the adjacent diagram.
Grounding the Unit
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.
ATTENTION
This product is intended to be mounted to a well
-grounded mounting surface, such as a metal panel.
SG: The Shielded Ground (sometimes called Protected Ground) contact is the
right-
most
contact of the 3
-
pin power terminal block connector when viewed from the angle shown
here. Connect the SG wire to an appropriate grounded metal surface.