Emerson E2 Manuel D’Utilisation

total accumulation, and the last accumulated total informa-
tion can be viewed.

The current output shows the rate of consumption of 

the quantity represented by pulses. Average output shows 
the average rate value accumulated over the period set in 
the Average Window parameter. The High Limit Trip out-
put will turn on if the total accumulation exceeds a user-
specified high limit. Total accumulation shows the total 
accumulated value since the last reset. Last Total output 
shows the total accumulated value when the last reset 
occurred.

The Pulse Accumulator is a register that is increased 

by the value of each update of the Quantity Accumulation 
input. Each time the Accumulator is reset, before clearing, 
its value is saved to a Last Total output. The type of reset 
the Accumulator uses can be user-specified with the Accu-
mulator Reset Type parameter. The Accumulator can be 
set to reset at a certain time of day, day of the month, when 
a high-limit trip occurs, or not to reset at all.

Rate and usage data is logged and stored using applica-

tion logging. Data is stored in hourly, daily, and monthly 
formats. All logged data can be erased from memory by 
using the Applications Command menu. In addition, appli-
cation logs show the total and peak rates of consumption 
for the last day, hour, and month.

The Hourly log will be updated every hour at the top of 

the hour and contain data for the last 48 hours. Time, date, 
total accumulation for that hour, maximum average for 
that hour, maximum peak value, and time of peak value, 
are stored in this log.

The Daily log will contain data for the last 48 days. 

Date, total accumulation for that day, maximum average 
for that day, maximum peak value, time of peak value, and 
minutes tripped are stored in this log.

The Monthly log will contain data for the last 24 

months. The log will be updated on a user-specified day of 
the month. Date, total accumulation for that month, maxi-
mum average for that month, maximum peak value, time 
of peak value, and date of peak value are stored in this log.

Application graphing generates hourly, daily, and 

monthly graphs from the application log data. All graphs 
show the total and max average.

On the main Status screen, consumption for the current 

hour, day, and month are displayed.

A high-trip output can be triggered if the Accumula-

tor’s total quantity exceeds a user-defined setpoint. The 

trip point output can be controlled by any of three input 
sources. The output will be turned ON when the input 
source is equal to or greater than a user-specified value. 
The total amount of time the application has been in a high 
trip condition is shown in the Time In Trip Today output.

Irrigation control is an application used for the con-

trolling of sprinkler systems. This application controls 
watering by duration of time or water usage parameters. 
Days of the week and times for watering are set by the 
user with a maximum of two Irrigation applications 
allowed in the CX controller.

The master water valve is turned ON and OFF as water 

is needed for a zone. When disabled, no application con-
trol of any outputs will be possible and the System Status 
output will indicate Disabled.

Under normal control only one zone will be active at a 

time.

A zone is defined as a single line of irrigation fed from 

a main water supply valve (i.e., a group of sprinklers that 
are attached to the same line of irrigation). Up to 16 zones 
of irrigation per application are supported with six start 
times for watering. The user will be able to configure each 
zone to function on different days of the week or odd or 
even days of the month. 

Zones are turned ON one at a time starting from the 

first enabled zone. The zone that is ON is considered to be 
the active zone. Its state is set to ON and its valve output is 
also set to ON. When the active zone completes its time 
duration, its state will be set to Done and its valve output 
set to OFF.

For enabled zones that are not active or complete, the 

states will be set to Pending and the valve output set to 
OFF.

A cycle is the sequence of all defined zones irrigating 

one at a time. A cycle is considered complete when the last 
defined zone finishes irrigating and shuts OFF. Each zone 
turns ON one at a time, starting with the first defined zone 
until the last defined zone in the list turns OFF.

The Number of Zones parameter (with a default value 

of 4) specifies how many zones the application will use. 
No two zones are ever ON at the same time; each zone 
starts and stops independently and waits for the other to 
finish before another zone starts.