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EMX 151 Installation Guide-2
Caution
Be sure you disconnect the Infinet controller’s AC power
source before you connect any modules.
1.Look at the bottom panel of your Infinet controller. On
that panel is an expansion port in approximately the
center of the panel.
2.Look at the EMX 151 module. Notice that it has a
connector on the top and on the bottom. Plug the top
connector into the Infinet controller.
3.If you are connecting more than one EMX 151 module
to your Infinet controller, connect the second one to the
bottom of the first.
4.Set the BOARD switch to 1 on the first EMX 151 on the
controller, and the BOARD switch to 2 on the second
EMX 151. If you do not plan to connect more than one
EMX 151, you should set the BOARD switch to 1.
Never set two modules of the same model number to the
same board number.
3. Connect the External Power Supply
(if necessary)
If you are installing multiple modules, you may need an
external power supply. To determine what you need, refer
to the ACC EMX Modules Configuration Guide.
Figure 2 shows where you connect the external power supply to
the 2-pin Berg type connector on the EMX 151.
Figure 2. Location of External Power Connection
and Jumper for External Power
EMX151
BOARD
1
2
RET
I
V
OUTPUT
A
RET
I
V
OUTPUT
B
EXTERNAL
POWER
Connect
External
Power
Supply
Here
Power
Supply
Jumper
4. Reposition Jumper on One Module
The Berg type connector immediately below the external
power supply connection has a jumper that you reposition
to indicate you are using external power.
You change the jumper position only on the module or mod-
ules connected to the external power supply, not on any other
modules.
Note
You need to change the jumper position only on the mod-
ule(s) actually connected to an external power supply. Never
change the jumper position of other modules.
Figure 3 shows the jumper in the two possible positions,
one for the internal power supply, the other for the external.
Figure 3. Jumper Positions for Internal and External
Power Supplies
Each is set to the internal position when you receive it.
Wire the Outputs
Wire Voltage Outputs
You wire the outputs for voltage as follows:
1.Slip the appropriate wire under the V screw and tighten
the screw down on it.
Figure 4 illustrates the wiring for voltage outputs.
Figure 4. Wiring Diagram for Voltage Outputs
2.Slip the ground wire under the RET screw and tighten
the screw down on it.
Wire Current Outputs
You wire the outputs for current as follows:
Jumper Position,
External Power
Supply
Jumper Position,
Internal Power
Supply
V
RET
+
–
RL > or = 4 K
Ω
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