Sensaphone CELL682 - Manual (Page 69)

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Chapter 11: Testing the Cell682
For 4–20mA inputs, confirm that the level or value being displayed in the
Cell682 matches the actual conditions being measured.
oUtpUt testing
Confirm that the power limitations of the outputs will not be exceeded. The
Cell682 outputs are rated for a maximum of 0.3A at 120VAC or 1.0A at 24VDC.
Test the outputs by switching them on and off manually and confirming that the
device being controlled turns on and off. The Output LEDs on the front of the
unit should also turn on and off.
control prograMMing
For applications that utilize control programming it is important to test all sce-
narios that may affect system operation. This means you should test your system
under normal operating conditions as well as abnormal (or failure) conditions to
make sure that you have designed your system to operate under the worst-case
scenario.
Note that Local and Machine-to-Machine control will not execute while you are
connected locally.
To test Local control operation, force input conditions as necessary to activate
the output(s). Confirm that the input-to-output control logic is executing prop-
erly. Test each programmed control algorithm separately to make sure that each
one is functioning as desired.
To test Machine-to-Machine control, force input conditions as necessary to acti-
vate the output(s) on your remote Cell682 device(s). Confirm that the outputs
on the remote unit(s) have turned on or off as instructed. Test each programmed
control algorithm separately to make sure they are all functioning. Have the sys-
tem go through a complete automated control cycle of your system to confirm
that the unit and its programming are operating as intended.
pUMp control
To test Pump Control using float switches, force the float switch inputs open or
closed as necessary, to make the output(s) turn on or off. In a Drain application
the first pump would turn on if the Pumps-Off and Lead float switches were
closed. The second pump would turn on if the Lag float switch also closed. Both
pumps would then turn off when all three float switches opened. In a fill applica-
tion, the first pump would turn on when the Pumps-Off and Lead floats opened.
The second pump would turn on when the Lag float also opens. Both Pumps
would turn off when all three floats closed.
To test Pump Control using a level transducer you can temporarily force the
input level to a certain value by adjusting the calibration for the Analog Input.