Honeywell VRX180 user manual Rolling Average Prompts, # of Samples, AVG Period Mins

Programming Function Blocks and Features

Rolling Average

Outputs a rolling mean average CVn OV of the input over the specified Average Period. As new input samples are collected, old samples are discarded. The function will calculate a new average at equally spaced sample intervals.

Sample interval = averaging period

# of samples

Rolling Average = sum of samples

# of samples

Example

# of samples = 10

Average Period = 30 minutes

The first average will appear after 30 minutes, then will be updated every 30/10 or 3 minutes after.

When the Reset Input is ON(1) all accumulated samples are discarded and the output is held until the Reset Input is OFF(0), then the averaging period resets.

Table 4-46 describes the Rolling Average prompts. See Table 4-2 for additional prompts.

Table 4-46 Rolling Average Prompts

Prompt		Range/Selections	Definition
RANGE LOW		OFF or number	Enter the output’s display limits. Output is not clamped or
			flashed when it exceeds these limits.
RANGE HIGH
INPUT		OFF, analog parameter,	This parameter will be averaged.
		number
RESET		OFF, discrete parameter, 0, 1	Resets average.
# OF SAMPLES	1-60		Number of samples taken during average period.
AVG PERIOD MINS		OFF or number	Number of minutes in average period.

Video Recorder – User Manual 139