Analog sensing in the Minimum sensing
configu-ration means detecting an object over a 5" range with the RPS-401A-40.
This 5" span can be adjusted to occur over any part of the sensors range.
For example it could be adjusted to occur from 10" to 15" or 25" to
30". This is done by means of the two potentiom-eters on the sensor.
This sensor has a 5 : 1 adjustment ratio on its analog output, meaning
that the RPS-401A-40 has a maximum span of 36" (range 4" to 40"). The
analog output can also be adjusted any-where between the 5" and 36"
spans. These adjust-ments are made by the two potentiometers on the
sensor. With no more then two adjustments of each potentiometer the
desired range will be achieved.
Analog sensing in the Maximum ranging
configu-ration means detecting an object over a 36" range with the RPS-401A-40.
This 36" span goes from the sensors minimum sensing distance (4") to
sensing distance (40"). The adjustment proce-dure is the same as described
in the minimum analog ranging section. The RPS-401A-80 and RPS-426A-80
in the maximum ranging configuration detect an object over a 72" range.
This span goes from the sensors minimum sensing distance of 8" to its
maxi-mum sensing distance of 80". This sensor also has a 5 : 1 adjustment
ratio on its analog output so its minimum analog ranging capability
is a span of 12". These adjustments are made by the two potentiome-ters
on the sensor.
The RPS-401A has the ability to invert
its analog outputs, meaning that the current or voltage will decrease
with distance. For the current output to be inverted the voltage output
needs to be tied to the positive of the supply voltage of the sensor.
This then will invert the current output to 20mA - 4mA. To make the
voltage output inverted 10v - 0v the current output needs to be tied
to the positive of the supply voltage. In the standard mode of operation
(non-inverted) P1 adjusts the near point 4mA (0v) and P2 adjusts the
far point 20mA (10v). In the non-standard mode of operation (inverted)
P1 adjusts the near point 20mA (10v) and P2 adjusts the far point 4mA