WattMaster WCC II User Manual

Page 105

Section 3: Screen Descriptions

WCC II Operator’s Guide

Operator Interfaces

3-73

Sampling From:

The value of the global analog will be the accumulated total of this
input over the speciﬁ ed time period.

For example, if GA20 is input here, the system will periodically
read the value of analog global #20. The value of the global analog
will be the accumulated total of the readings over the speciﬁ ed
time period.

Automatically reset by GB1 being ON

This allows you to have the system automatically restart the
accumulation cycle when a binary value goes either ON or OFF.

Sampling Rate: 1 Minutes
Window: 24 Hours

Assume we are monitoring fuel oil usage in gpm, and 1 minute is
entered as the sampling rate and 24 hours is entered for the Window.
The system will read the value of the fuel oil usage rate (gpm)
every minute and then add the current value to the accumulated
total until 24 hours have elapsed. After 24 hours, the calculation
process will start over.

The sampling rate can vary from 1 minute to 99 hours. The window
will accept from 0-999 minutes, hours, days, or samples.

Integral Mode: Accumulation

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:

GLOBAL ANALOG - INTEGRAL MODE -

ACCUMULATION MODE SCREEN

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ANALOG Global #: 32

Name is GA32

Description: Oil Usage

Data Pattern: x,xxx

Unit

Measure:

Gal

In Local Set this global defaults to LAST VALUE

Mode

Integral

Sampling from : GA20

Automatic Reset by GB2 being ON

Sampling rate:

1 Minutes

Window: 24 hours

Mode:

Accumulation

Divisor:

Global value =

(

Σ Di/n) / divisor

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

HOME for menu

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