Trend Setup Screen; Figure 49 - Trend Setup Screen - York OPTIVIEW YD Series Manual

FORM 160.79-O3
ISSUE DATE: 11/09/2018

FIGURE 49 - TREND SETUP SCREEN

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
None
PROGRAMMABLE
Chart Type
Access Level Required: OPERATOR
Selects CONTINUOUS, ONE SCREEN or TRIG-
GERED type of graph.
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
JOHNSON CONTROLS

TREND SETUP SCREEN

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 seconds
(1 hour), in one second increments. The selected inter-
val not only determines the sample interval, but also
the full screen time display. The full screen time dis-
play is a result of the selected interval in seconds, mul-
tiplied by the 450 data points. For example, if the Data
Collection Interval is programmed for 900 seconds, the
parameter would be sampled every 900 seconds, with
the last 112.5 hours (4.7 days) of data viewable on the
screen. Therefore, the selected interval is a compro-
mise between resolution and full screen time display.
Select the desired Data Collection Interval as follows:
1. Determine the desired time interval (in seconds),
between data samples.
2. Calculate the full screen time display as follows:
3. Decide if the resultant sample interval and full
screen display meet the requirements. If not, se-
lect a different sample interval.
SECTION 2 – OPTIVIEW CONTROL CENTER
• 450 x Data Collection Interval = full screen
seconds
• Full screen seconds / 60 = full screen minutes
• Full screen minutes / 60 = full screen hours
• Full screen hours / 24 = full screen days
2
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