Chapter 3
20
Envizio Pro™ and Envizio Pro II® Installation and Operation Manual
2.
Connect the red lead wire to a clean +12V DC power source.
3.
Connect the white wire to ground.
Note:
Do not connect the orange wire to external power. The orange wire is switched power out of the
field computer. When the field computer is powered, +12V DC is applied to the orange wire to
power an external device. If more than one amp is required to power a device connected to the
orange wire, install a relay to switch the higher currents.
FIGURE 4.
Relay (P/N 415-1001-009) Terminals
CAUTION
Even when the field computer is powered off,
the computer will draw a small current from the
battery. Connect the red wire to a controlled
power source or, if the machine will not be in
use for an extended period of time, remove
power from the field computer.
To prevent accidental data loss, the red wire
should be connected to a clean power source.
To 12V Switched Orange
Wire Key Switch
12V Switched
to Node Power
Batt -
Batt +
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