User guide

Profile/Bubble/Taper Mode -
Analog Outputs Page Description
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Analog Outputs are an optional feature used with Profile/Bubble/Taper Mode. In
some cases bubbles are created using digital air valves that can be switched on and
off. When Analog Outputs are provided, a PLC (Programmable Logic Controller)
will be included for every two channels of analog. Options are none or 2, 4, 6 or 8
channels of analog.
The following description will be based using only two channels of analog.
Analog 1 is drawn using a red trace and Analog 2 has a yellow trace. A list of 32
lengths and percents are provided for each channel. Each length and percent pairing
is used to define a point on the graph in a typical x, y fashion. Lengths define the dis-
tance from the previous point. Percents relate to the level of output for each point. In
this example, the amount of air pressure and duration of “on time” of the air valve.
Zero to 100% is used to describe the amount of air used.
In most cases this will correspond to a 0-10 volt DC output (0 to 5 volt DC or 4 to 20
mA are other output choices).
4-120 l Operation
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