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Cooper Bussmann 915U-2 Wireless Mesh I/O and Gateway User Manual
Rev Version 1.2.2
Figure 46 IO Edit (Analog Inputs)
The following parameters can be configured for 915U-2 analog inputs.
Name
Enter a name for the analog input or leave the default name. The name can be up to
30 characters, including spaces.
Filter (sec)
Period of time (in seconds) needed by the analog input to settle on a step change of
an analog value. By default, all inputs except the pulse rates have a time constant of
five seconds. Pulsed input rates are not filtered.
Scaling
Shows the input scaling in either Low-High values or Zero-Span values. These
variables will change the scale of the analog inputs.
•
Low
—The low engineering value for the input.
•
High
—The high engineering value for the input (mA, V, Hz, and so on.
•
Zero
—Starting value (counts) when the measured value is zero.
•
Span
—Number of counts per measured value (mA, V, Hz, and so on).
The analog scale is linear, with an overall raw range of 8192 to 49152 decimal
(total = 40960). The input engineering range can have many different forms, such as
0–20 mA, 0–5V, or 0–1000 Hz. This why the zero and span can be scaled to give the
correct value.
Lower and Upper
Set Points
These set points are the upper and lower control point values that will be used to turn
on and off the analog set point digital signals located at register 10009–10020.
NOTE Set point values are entered in the scale of the input. For example,
analog input 1–4 should be in mA, analog inputs 9–12 should be volts, and so
on.
The set points can be controlled by using the Invert and Window control options
explained below. All set points have these controlling options.
Invert
Selecting this option inverts the set point control logic. The function does not
change—only the operation is inverted. For example, if the set point is “on” in its
normal state, inverting the signal causes the set point to be “off” in the normal state.
By default, the checkbox is deselected and the set point logic is not inverted.
