Schneider Electric SE7600E Series Application Information

SE7600E Series Application Guide

Schneider Electric SE7600E Series RTU Controller with IAQ Control Application Guide

CONTENTS

Solution Overview 2
Product Overview 3
Features & Benefits 3
System Overview & Architecture 4
Models Available 4
Terminal Identification & Function 5
Typical Application 5
Main Output Wiring 5
Proportional Heat Control 6
Indoor Air Quality Control Standards 6
AI1 CO2 Sensor Input Operation 6
Using any 0-10VDC value for monitoring 6
Using a 0-10VDC CO2 sensor for control purposes 7
Indoor Air Quality & Sequence of Operations 8
Economizer Control Mode Only 8
Economizer Mode and Fresh Air Measurement Station 9
Economizer Mode and CO2 Level Control 10
Economizer Mode, CO2 Level Control
and Fresh Air Measurement Station 11

Version 2

Schneider Electric | AG-SE700 0-RTUIAQ -A4.EN.11.2015.v2 November 2015

SE7600E SOLUTION OVERVIEW

It is not uncommon for most of us to spend up to 90% of our time indoors.
A large portion of that time is often dedicated to a working environment in a
commercial building. Studies conducted by the Environmental Protection Agency
(EPA) show that indoor air can contain levels of pollutants that are actually higher
than levels typically found outdoors.

In light of this, indoor air quality has become a major concern to businesses,
building managers, tenants, and employees because of its direct impact on the
comfort, well-being, and productivity of the building’s occupants. Not all buildings
have severe indoor air-quality issues, yet even well-run buildings can experience
episodes of poor indoor air quality.

The Schneider Electric SE7600E Indoor Air Quality Controller (IAQ), along
with your preferred CO2 sensor, is a cost-effective solution that is capable of
controlling economizer-free cooling and IAQ demand-based ventilation strategy
while providing a fresh air measurement input right out of the box. The Schneider
Electric IAQ Controller replaces the need for custom programmed DDC controllers
and sensors in order to achieve the same results as in the past. When connected
to a building automation system, the Schneider Electric IAQ Controller can monitor
and verify the CO2 and fresh air levels, ensuring that air quality and energy
efficiency is optimized.

2

While primarily designed for use in small to midsized commercial building
applications such as office buildings or schools, the Schneider Electric IAQ
Controller can be installed in any other building type currently using a standard
packaged rooftop or heat pump unit with a requirement for fresh air control. The
Schneider Electric IAQ Controller provides a simple cost-effective solution. It offers
advanced pre-programmed sequences of operations that can be installed without
special software, tools or the presence of a network. This greatly reduces the
installation cost and commissioning complexity while providing control functions
immediately when powered on.

Further energy saving benefits can be achieved with the use of a local onboard
passive infrared motion sensor (PIR) that can automatically detect local activity
allowing the IAQ to be controlled only when occupants are present thus saving on
unnecessary energy costs. This functionality along with configurable night setback
features makes it an economical yet highly effective control solution, which brings
IAQ control and energy savings features in one simple yet powerful package that is
Network Ready, BACnet

®

, or ZigBee® Wireless compatible.

.

Schneider Electric | AG-SE700 0-RTUIAQ -A4.EN.11.2015.v2 November 2015

SE7600E SERIES PRODUCT OVERVIEW

The SE7600E series PI controller is specifically designed for RTU and Indoor
Air Quality (IAQ) control. It is also designed for single stage, multi-stage, and or
0-10VDC analog heat control of heating or cooling equipment such as rooftop
and self-contained units used in commercial applications and IAQ control via
economizer control.

The product features an intuitive, menu-driven, back-lit LCD display, which
walks users through the configuring steps making the process extremely simple.
Accurate temperature control is achieved due to the product’s PI time proportional
control algorithm, which virtually eliminates temperature offset, associated with
traditional, differential-based controllers. IAQ control is achieved due to CO2 and
airflow measurement and fresh air damper control using two analog inputs.

The controllers are also compatible with the new Schneider Electric PIR cover
accessories. Controllers equipped with a PIR cover provide advanced active
occupancy logic, which will automatically switch occupancy levels from Occupied
to Unoccupied as required by local activity being present or not. This advanced
occupancy functionality provides advantageous energy savings during occupied
hours without sacrificing occupant comfort. All controllers can be ordered with or
without a factory installed PIR cover (see ordering notes below).

3

SE760 0E Series

FEATURES AND BENEFITS

Features Benets

Controls IAQ with a remote return duct or wall CO2 sensor.

Controls and measure fresh air with a fresh air measurement station.

Embedded free cooling economizer loop.

One small compact thermostat-like controller.

Network ready functionality built in.

PIR sensor cover available as an accessory.

Being able to control IAQ means healthier & more productive
occupants.

Meets new IAQ requirements and regulations for LEED type
buildings.

True energy savings with adjustable economizer control loop.
Minimum fresh air can be measured and controlled with the fresh air
measurement station.

Simple to install cost effective package. Easy thermostat-like
operation for the end user.

Allows for future network functionality along with remote monitoring
of all critical system data points for sustainability.

Further energy savings is possible with the use of local PIR cover
to automatically detect local occupancy. IAQ is maintained and
controlled only when occupants are present to save energy costs.