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The MOSCAD-M Unit
25
Additional I/Os (Expanded I/O Models only)
AI (x4)
Four Analog Inputs are connected via TB6. (See Figure 9.) The AIs are 4-20mA or 0-5V.
Each AI has a jumper which determines the measurement. If the jumper is placed (closed), the
AI is set up to measure current (4-20mA). If it is not placed (removed), it measures voltage
(0-5V). The jumpers are placed in the factory based on customer order.
If the status of the jumpers is changed, the AI Type must be
changed accordingly in the Hardware Test tool of the MOSCAD
-
M
Configurator. See Configurator help.
Four options are available for the AI expansion configuration. The default AI setup of all
MOSCAD
-
M PLUS radios will be 4-20mA (no option is required.)
Options
AI1
AI2
AI3
AI4
Default
4-20mA
4-20mA
4-20mA
4-20mA
V741
4-20mA
4-20mA
4-20mA
0-5V
V742
4-20mA
4-20mA
0-5V
0-5V
V743
4-20mA
0-5V
0-5V
0-5V
V744
0-5V
0-5V
0-5V
0-5V
A label on the plastic housing will specify the AI setup. If, for some reason, the jumpers need
to be changed, the RTU must be disassembled. For instructions, see Appendix C. Figure 15
shows how the AIs are to be connected.
Figure 15
Expansion Board Analog Input (Voltage/Current) I/O Connection