EXACTUS IFD-5 and IFA-5 User Guide
2
If the modules are not to be stacked, the connections are wired the same as described above in
figure 2.0. The IFA-5 Module and the IFD-5 Module can be wired up to 50 meters from each
other. Shielded wiring is recommended for distances greater than a few meters or if the
electronics are mounted in an area of high electromagnetic interference.
The voltage and current output connections are adjacent to the power and digital communication
connections. For a voltage output, connect to “+V out” and “-V out”, and for a current output
connect to “+I out” and “-I out”.
3.2 Optional External Power
The internal power source on the IFA-5 Module will drive the current output through a resistance
of up to 500 ohms. The module can drive up to 1050 ohms if an external 24VDC power source
is used.
The IFA-5 Module is supplied configured for internal power. To configure for external power a
jumper inside the module must be moved. The IFA-5 Module and the IFD-5 Module are similar
in appearance, so make sure you are working with the IFA-5 Module before you proceed. To
move the jumper, completely remove the two screws that hold the IFA-5 Module case together.
With one hand, grasp the sides of the module just below the case seam and squeeze firmly; the
upper and lower covers will separate from each other. Remove the top cover of the module and
set it aside.
Hold the IFA-5 Module so the writing on the circuit board is upright. There is only one jumper
on the board, it is labeled JP1 and will be in the upper left-hand side of the board close to the
module connections. Three pins allow the jumper to be in one of two positions. To configure
for external power, locate the jumper connector onto the bottom two pins, to configure for
internal power locate the jumper connector onto the top two pins. See Figure 3 below for details.
Figure 3
