Output Signal - Ingersoll-Rand ARO Benutzerhandbuch

EN
The service screen displays two service parameters namely "Totalizer" and "Service
Interval".
Select the necessary service parameter and press ENTER.
To exit this screen, press either "NAVIGATE TO PREVIOUS" or "NAVIGATE TO HOME".
i. Totalizer
The totalizer screen displays the number of cycles the pump has executed since the
last time this counter was reset.
To reset the totalizer counter, select the "Clear Totalizer" and press ENTER.
To exit this screen, press either "NAVIGATE TO PREVIOUS" or "NAVIGATE TO HOME".
ii. Service Interval
2.3.b. Output Signal
The ARO Controller is capable of sending out a 4-20 mA signal that has a linear proportional relationship to
the speed of the pump. The definition of the slope and crosspoint of this relationship is explained in the next
step.
On the Pump Setup menu, select "Signal Out".
The lower and upper thresholds of the output signal must be correlated to actual flow
values.
Type these values as indicated and press ENTER after each value .
To exit this screen, press either "NAVIGATE TO PREVIOUS" or "NAVIGATE TO HOME".
2.3.c. End of Stroke Sensor
The ARO Controller must receive the signal from an end of stroke sensor (EOS) on the
pump. This sensor indicates that the stroke has completed.
Three types of end of stroke sensors are available: a pressure switch, a proximity
switch and a flow meter.
All ARO EXP and compact pumps manufactured starting January 2016 use the prox-
imity switch EOS.
Previously the only ARO pump family that used a proximity switch was the ¼" pump
family (PE01). All other ARO pumps used a pressure switch.
If unsure as to the type of switch your pump has, look for a device similar to the one
depicted in the following image. If present, the pump has a pressure switch.
To exit this screen, press either "NAVIGATE TO PREVIOUS" or "NAVIGATE TO HOME".
EN-6
The service interval screen is used to establish the estimated number of cycles the
pump will execute before requiring maintenance.
Type the estimated number of cycles for the selected pump before it should receive
maintenance in line "Interval" and press ENTER.
The "Countdown" line indicates the number of cycles the pump has yet to execute be-
fore requiring maintenance. When this counter reaches zero (0), the "Service Interval"
alarm will be triggered.
To reset the counter without changing the maintenance interval select "Reset Count-
down" and press ENTER.
The "Lifetime" line shows the total number of cycles the pump has completed since
the controller was first put into service. This value cannot be reset or changed. To exit
this screen press either "NAVIGATE TO PREVIOUS" or "NAVIGATE TO HOME".
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