2-4 ADAM 4000 Series User's Manual
Installation Guideline
Assume that a +24 V
DC
will be used to power five ADAM-4011 Analog
Input Modules. The distance from power supply to modules is not so big
that significant line voltage drop will occur. One ADAM-4011 module
consumes a maximum of 1.2 Watts. The total required power will equal 5 x
1.2 = 6 Watts. A power supply of +24 V
DC
should therefore be able to
supply a minimal current of 6 / 24 = 0.25 Amps.
Small systems may be powered by using wall-mounted modular power
supplies. Also when modules operate on long communication lines (>500
feet) it is often more reliable to power the modules locally with modular
power supplies. These inexpensive units can easily be obtained from any
electronics retail store.
The power cables should be selected according to the number of modules
connected and the length of the power lines. When using a network with
long cables, we advise the use of thicker wire to limit the line voltage drop.
In addition to serious voltage drops, long voltage lines can also cause
interference with communication wires.
Figure 2-1
Power Supply Connections
We advise that the following standard colors (as indicated on the modules)
be used for power lines:
+Vs (R) Red
GND (B) Black
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