JOHNSON CONTROLS
80
FORM 160.84-OM1
ISSUE DATE: 9/21/2017
SECTION 3 - OPTIVIEW™ CONTROL CENTER FUNCTIONS AND NAVIGATION
OVERVIEW
This screen is used to configure the trending screen.
The parameters to be trended are selected from the
Common Slots Screen or Common Slots Master list
and entered as Slot Numbers for Data Points 1 through
6. The Y-Axis minimum and maximum values for each
parameter are entered as Data Point Min and Data
Point Max for Data Points 1 through 6. The interval at
which all the parameters are sampled is selected as the
Data Collection Interval.
DISPLAY ONLY
This screen displays chiller trend setup fields. There
are no display only field.
PROGRAMMABLE
Chart Type
Access Level Required: OPERATOR
Selects CONTINUOUS, ONE SCREEN or TRIG-
GERED.
Collection Interval
Access Level Required: OPERATOR
Selects the interval at which the parameters are sam-
pled. There are 450 data points displayed across the
X-Axis of the graph. Each point represents the instan-
taneous value of the parameter. The user selects the
time interval between these points. This is called the
DATA COLLECTION INTERVAL, or the interval at
which the parameter is sampled. This interval is pro-
grammable over the range of 1 second to 3600 sec-
onds (1 hour), in one second increments. The selected
interval not only determines the sample interval, but
also the full screen time display. The full screen time
display is a result of the selected interval in seconds,
multiplied by the 450 data points. For example, if the
Data Collection Interval is programmed for 900 sec-
onds, the parameter would be sampled every 900 sec-
onds, with the last 112.5 hours (4.7 days) of data view-
able on the screen. Therefore, the selected interval is a
compromise between resolution and full screen time
display. Select the desired Data Collection Interval
as follows:
TREND SETUP SCREEN
LD17950a
FIGURE 33 - TREND SETUP SCREEN
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