OPTOEMU-SNR-3V

Availability: OBSOLETE
Wired+Wireless monitoring unit for electrical panels, machines, and equipment

Please call (800) 321-6786 to order.

OPTOEMU-SNR-3V

Production Specification

The OptoEMU Sensor™ Energy Monitoring Unit monitors the electrical energy used in your facility and then delivers that data to online software applications—and optionally control and business systems—using your existing wired or wireless Ethernet network. The OptoEMU Sensor gives you the detailed, real-time data you need to analyze energy consumption and reduce energy costs.

You can view the real-time and historical energy data gathered by the OptoEMU Sensor online through a secure software service such as eSight. The OptoEMU Sensor sends energy data directly to the service you choose, and you can view and analyze the data from any authorized computer or mobile device.

You can also incorporate data from the OptoEMU Sensor in control systems based on Opto 22’s PAC Project™ software or Modbus/TCP, or send data to OPC clients, SQL databases, or custom programs you develop using the Microsoft .NET Framework.

The OptoEMU Sensor monitors energy used by your whole building, by electrical subpanels, or by individual high-energy users like chillers and compressors. The Sensor can connect to a variety of metering devices that emit pulses and can also connect directly to electrical circuits using current transformers (CTs) with a 0.333 VAC secondary.

The Sensor includes an easy-to-use utility program for setting up communication on your network, configuring the monitored devices, and entering the connection information needed to send data to the software service. You can download this OptoEMU Sensor Manager for free; it also comes on a CD with the Sensor.

Energy management represents significant opportunities to improve the bottom line. The OptoEMU Sensor makes it easy to eliminate assumptions, identify trouble spots, and save energy costs.

Other options for energy monitoring:
  • OPTOEMU-SNR-DR1, an energy monitoring unit with demand response capability and Wired+Wireless communication
  • OPTOEMU-SNR-DR2, an energy monitoring unit with demand response capability and wired Ethernet communication

 

Overall Unit Specifications

Power Requirements
(without auxiliary box)

100–240 VAC, 47–63 Hz, 0.4 A maximum, 8 W

Power Requirements
(with auxiliary box)

100–240 VAC (single phase) or 277–346 VAC (line to neutral from 480–600 VAC panels)

Dimensions

6.0"w x 13.5"h x 4.5"d (15.2 cm x 34.3 cm x 11.4 cm)

Enclosure

Sturdy metal enclosure with standard knockouts for wiring

Removable storage

MicroSD card slot (for future use)

Backup battery

Rechargeable (recharges whenever the unit has power), 3-year power-off data retention

Ethernet Communication (wired)

Two independent 10/100 Mbps Ethernet network interfaces (RJ-45 connec­tors), each with a separate IP address.

Ethernet Comm (wireless)

Wireless LAN interface with separate IP address.

Security:
802.11i: AES - Compatible with WPA2 Personal;
TKIP - Compatible with WPA Personal.

Frequency 802.11a:
5.180–5.240 GHz, 5.745–5.825 GHz

Frequency 802.11b/g:
2.412–2.472 GHz, 2.484 GHz

Transmit Power:
5 dBm maximum

Antenna Connector:
Reverse polarity SMA (RP-SMA or RSMA)

Roaming:
Supported within an SSID (Service Set Identifier) only

Serial Communication

One serial port, software configurable for RS-232 (TX, RX, COM, DTR, DCD, RTS, CTS) or RS-485 (2-wire, 4-wire, optional termination, optional biasing).

Indicators

Status of unit
Wireless: WLAN activity
Serial: Receiving, Transmitting
Ethernet interfaces (2): Link, Activity
Pulse inputs: On/Off status

Other features

Real-time clock

Operating Temperature

0 to 60 °C (32 to 140° F)

Storage Temperature

-25 to 85 °C (-13 to 185° F)

Humidity

0% to 95% relative humidity, non-condensing

Agency Approvals

UL, cUL, DFARS

Wireless: U.S., FCC Part 15 Subpart C; Canada, IC RSS-210

Warranty

30 months

 

Dry Contact Pulse Inputs

OptoEMU Sensor supplies 15 volts to each external dry contact switch and senses switch closure.

 

Open Circuit Voltage (Switch Open)

15 VDC typical (supplied by OptoEMU Sensor)

Short Circuit Current (Switch Closed)

7 milliamps nominal

Minimum Off Resistance

>20 K ohms

Maximum Allowable ON Resistance
(Wire + Contact Resistance)

500 ohms

Turn-on Time

5 msec

Turn-off Time

25 msec

Channel-to-channel Isolation

8 channels isolated in groups of two

Input-to-output Isolation

1500 V AC/DC

Minimum Pulse Width

>=7 milliseconds

Maximum Frequency

<=30 Hz

Status indicators

1 LED per channel

 

3-Phase Power Monitoring

Voltage Inputs (each voltage channel)

Input Range

0 to 400 VAC RMS (line to neutral—347 V for a 600 V 3-phase sys­tem or 277 V for a 480 V 3-phase system)

Input Over Range

To 440 volts

Resolution

10 mV

Accuracy (47 to 63 Hz)

± 0.2 V plus ± 0.2% reading (at full scale = ±0.2 V + ±0.8 V = ±1.0 V)

RMS Integration Time/ Data Freshness

1000 ms (synchronous with current measurement)

Input Resistance – Single Ended

1 Megohm
NOTE: Because both channels share the same reference terminal,
polarity must be observed when connecting the current channel.

Maximum Input

600 V non-operating

Current Inputs (each current channel)

Input Range

0 to 333 mV AC input from current transducer

Input Over Range

To 416 mV AC

Input Overload

5 VAC continuous, non-operating

Resolution

15.1 µV AC

Accuracy (47 to 63 Hz)

± 266 microvolts plus 0.2% of reading
(at full scale = 266 µV + 667 µV = 933 µV = 0.28%)

RMS Integration Time/ Data Freshness

1000 ms (synchronous with voltage measurement)

Input Resistance – Single Ended

500 K Ohms
NOTE: Because both channels share the same reference terminal,
polarity must be observed when connecting the voltage channel.

Maximum Input

5 VAC continuous, non-operating

OptoEMU Sensor 3V Data Sheet

The OptoEMU Sensor™ Energy Monitoring Unit monitors the electrical energy used in your facility and then delivers that data to online software applications, using your existing wired or wireless Ethernet network.

Energy data can also be incorporated into a control system, including the SNAP PAC System and systems communicating via Modbus/TCP or OPC. In addition, data can be sent to common SQL databases.

The OptoEMU Sensor gives you the detailed, real-time data you need to analyze energy consumption, manage use, and reduce energy costs.

OptoEMU Sensor Manager Readme

This documents lists the new features, enhancements and bug fixes for the OptoEMU Sensor Manager.

OptoEMU Sensor Update File Readme

This documents lists the new features, enhancements and bug fixes for OptoEMU Sensor energy monitoring units (OPTOEMU-SNR-3V, OPTOEMU-SNR-DR1, and OPTOEMU-SNR-DR2).

Quick Start: Energy Monitoring HMI for OptoEMU Sensor

The Energy Monitoring HMI (human-machine interface) for OptoEMU Sensor gives you a simple way to see the energy your facility is using, so you can analyze this detailed data and take steps to reduce energy costs.

The Energy Monitoring HMI displays data from one OptoEMU Sensor (any model).

This Quick Start guide shows you how to install and use the Energy Monitoring HMI.

OptoEMU Sensor Communication Guide

OptoEMU Sensor™ Energy Monitoring Units monitor the electrical energy used in your facility and then deliver that data to applications so you can see it, analyze it, and take steps to reduce energy costs.

The OptoEMU Sensor can provide data to web-based or local software services; to control systems based on Opto 22’s PAC Project™ software and Modbus/TCP; to OPC clients; and to standard SQL databases. This Communication Guide shows you how to communicate with the Sensor in all these ways.

NOTE: To install and use the OptoEMU Sensor and see energy data through online software services such as Pulse Energy and eSight, see Form 1932, OptoEMU Sensor User's Guide. If you are using the Sensor only with these online services, you do not need this Communication Guide.

OptoEMU Sensor User's Guide

The OptoEMU Sensor monitors energy usage in your facility so you can track energy data and reduce costs. This document describes how to install and use the OptoEMU Sensor and the optional auxiliary box.

Application Brief: Integrating M-Bus Sensors with an Energy Monitoring System

In Gothenburg, Sweden, water, temperature, and power sensors in a modern apartment building deliver real-time usage information to an OptoEMU energy monitoring system using an Anybus M-Bus to Modbus/TCP gateway.

Opto 22 To Present OptoEMU Sensor Energy Management Products at World Energy Engineering Congress

Press release: Opto 22 To Present OptoEMU Sensor Energy Management Products at World Energy Engineering Congress 2012.
 

Opto 22 Sponsors eSight Energy's U.S. "Energy Management Road Shows"

Opto 22 Sponsors eSight Energy's U.S. "Energy Management Road Shows"

Energy Monitoring for Profit: Introducing Demand Response

This white paper introduces the concept of demand response (DR) in energy management. DR offers an opportunity for industrial and commercial businesses to not just reduce energy costs, but also earn a revenue stream from their use of electrical energy.

The paper briefly discusses how electrical energy is produced and distributed in the United States and then describes four practical steps automation professionals can begin now to take advantage of DR programs in their area.

Case Study: SUPERVALU Energy Management

Minnesota-based grocery retail company SUPERVALU uses Opto 22’s OptoEMU Sensor and has partnered with a leading curtailment service provider and a systems integrator to monitor, manage, and reduce energy consumption in SUPERVALU distribution centers and make them more energy efficient. SUPERVALU’s management team has also worked to identify imbalances in electrical supply and demand in order to gain best pricing for electricity and payments and incentives for demand-response energy curtailment.

OptoEMU Sensor Energy Monitoring Appliance Provides New Options for Utilizing Energy Data in Business and Control Systems

Opto 22 Announces OptoEMU Sensor Energy Monitoring Appliance Provides New Options for Utilizing Energy Data in Business and Control Systems. This Support for Additional Standard Protocols and Interfaces Means More Ways to Analyze Energy Data to Improve Energy Efficiency and Reduce Energy Costs.

OptoEMU Sensor Forms

These forms help you gather networking and energy input information needed to set up the OptoEMU Sensor 3V.

Energy Monitoring Made Simple

This two-page, full-color brochure describes the OptoEMU Sensor energy monitoring unit, including diagrams, brief description, and specifications.

For more detailed data, see Form 1936, OptoEMU Sensor 3V data sheet and Form 1990, OptoEMU Sensor DR data sheet.

OptoEMU Sensor 3V Quick Start Card

OptoEMU Sensor 3V monitors energy usage in your building or facility and sends energy data so you can see it online and use it in building and control systems. You can analyze patterns and identify ways to reduce energy costs.

The OptoEMU Sensor 3V Quick Start Card shows you how to begin using OptoEMU Sensor 3V.

For more detailed steps, see Form 1932, OptoEMU Sensor User's Guide.

Opto 22 and Pulse Energy Help Building Owners, Businesses, and Industrial Facilities Reduce Utility Bills

This press release announces a partnership between Opto 22 and Vancouver-based Pulse Energy. The two companies have combined their expertise to offer customers the data they need to understand their energy usage, pinpoint problems, and reduce costs.

Automatización y La Red Inteligente (Smart Grid): Gestión de Energía

Automatización y La Red Inteligente (Smart Grid): Gestión de Energía is a white paper in Spanish.

To read this white paper in English, see Form 1914, Automation and the Smart Grid: Energy Management Today.

Automação e a Rede Inteligente (Smart Grid): Gestão de Energia

Automação e a Rede Inteligente (Smart Grid): Gestão de Energia is a white paper in Portuguese.

To read this white paper in English, see Form 1914, Automation and the Smart Grid: Energy Management Today.

Automation and the Smart Grid: Energy Management Today

This white paper looks at the way electricity is produced in the United States today and the vision for a "Smart Grid" in the future.

The paper also discusses specific ways that small and medium-sized industrial and commercial businesses can manage electrical usage and costs today, without waiting for Smart Grid technology.

OptoEMU Sensor and eSight Software Enable Web-based Energy Management for Small and Mid-Sized Businesses

Opto 22’s Monitoring Hardware Integrates with the eSight Energy Management Software Suite to Help Companies Reduce Utility Bills.

OptoEMU Sensor Analog Calibration Technical Note

An analog calibration issue exists for OptoEMU-SNR-3V units with date codes of July 2011 and earlier. This issue only affects customers who are using the product with a "direct connection," that is, measuring power via current transformers (CTs). The calibration issue does not affect those using the product with pulse inputs.

This technical note shows you how to determine whether your unit is affected and how to fix the issue. Use this technical note with the OptoEMU Sensor Analog Calibration File, which contains a command line utility.

UL Approval Document

This document lists all Opto 22 part numbers that have the Underwriters Laboratory (UL) approval.

OptoEMU Sensor Update File

This file updates an OptoEMU Sensor (OPTOEMU-SNR-3V, OPTOEMU-SNR-DR1, or OPTOEMU-SNR-DR2) to use current firmware and software.

You must have OptoEMU Sensor Manager software in order to install this update file. For update instructions, see the Maintenance chapter in the OptoEMU Sensor User’s Guide (form 1932).

OptoEMU Sensor Analog Calibration File

An analog calibration issue exists for OptoEMU-SNR-3V units with date codes of July 2011 and earlier. This issue only affects customers who are using the product with a "direct connection," that is, measuring power via current transformers (CTs). The calibration issue does not affect those using the product with pulse inputs.

This zip file contains a command line utility and a technical note (in PDF format) showing you how to determine whether your unit is affected and how to fix the issue.

OptoEMU Sensor Data-Sharing Strategy

This is a PAC Control strategy tag database (idb) file that enables you to access energy data in the OptoEMU sensor for use by PAC Display HMIs, OPC clients, and common SQL databases.

You do not need this file unless you are using data from the Sensor in one of these ways.

If you need this file, download it and save it to a permanent location on your PC. Read the OptoEMU Sensor Communication Guide (form 1958) for details on how to use the Data-Sharing Strategy.

OptoEMU Sensor.idb.txt File

If you are using groov to build operator interfaces (HMIs) for an OptoEMU Sensor energy monitoring unit, you need this file.

This text file contains the tag database information from the OptoEMU Sensor. Download this file and then follow instructions in the groov Quick Start or groov User's Guide to create your HMI.

groov makes it simple to build HMIs using only a web browser, and to view HMIs on any device—computer, laptop, tablet, smartphone, and more—that uses a modern web browser, no matter its size or manufacturer. For more information, see groov.

Pulse Energy Quick Start

Pulse Energy is an online service you can use to view data about your electrical energy usage. Support for Pulse Energy is integrated into the OptoEMU Sensor™; however, if you are not using the Sensor but acquiring energy data using the SNAP PAC System, you can still see that data through Pulse Energy.

This sample chart shows you how to move data from PAC Control into Pulse. Import the included chart into your PAC Control strategy to make integration with a Pulse Energy account easier. The included technical note, form 1992, shows you how to configure a Pulse Energy account and use the chart to visualize your monitored energy values.

Sample OptoEMU PAC Display Project

A PAC Display Project to show options for displaying data from an OptoEMU. See form 1958 for more infomation on using PAC Display with an OptoEMU Sensor.

Before you download, read the Legal Agreement.

No videos or demos are available for this product.