WattMaster WCC II - Manual (Page 99)

Section 3: Screen Descriptions
WCC II Operator’s Guide
Operator Interfaces 3-67
Sampling From:
The value of the global analog will be the average of this input
using the sliding window averaging method.
For example, if 3A1 is input here, the system will periodically read
the value of analog input #1 on satellite controller #3. The value of
the global analog will be the average of several of the most recent
readings, depending on how other inputs on this screen are fi lled
out.
Automatically reset by GB1 being OFF
This allows you to have the system automatically restart the
averaging cycle when a binary value goes either ON or OFF.
Sampling Rate: 3 Minutes Window: 10 Sam
Assume we are monitoring building kW, and 3 minutes is entered
as the sampling rate, and 10 samples is entered for the Window.
The system will read the value of the building kW every 3 minutes
and then average the 10 most recent readings. The value of this
global analog will be the average kW for the last 30 minutes. The
maximum number of samples allowed is 11.
Integral Mode: Sliding Window
There are three integral modes which can be selected by pressing
the
until the desired choice appears, and then pressing
. The following choices are available:
Divisor: 1
Due to memory limitations within the ECC/WCC II system, the
maximum value of any global analog is 65,535, and the largest
number which can be displayed on the screen is 9999. The value
of the global analog is divided by this number to lower the number
shown on the screen. The maximum divisor allowed is 9999.
ANALOG GLOBAL - INTEGRAL MODE
SLIDING WINDOW MODE SCREEN
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ANALOG Global #: 30 Name is GA30
Description: Building kW Data Pattern: x,xxx
Unit of Measure: 4 kW
In Local Set this global defaults to LAST VALUE
Mode 3: Integral
Sampling from : GA1 Automatic Reset by GBA1 being ON
Sampling rate: 3 Minutes Window: 10 samples
Mode: Sliding Window Divisor: 1
i = n
Global value = (
Σ Di/n) / divisor
i = 1
If sampling data is unavailable, then use 50 as default value
---------------Alarm---------------
Range Low Limit High Limit Type Message # Message
None
Press to reset data
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