Crestron GLS-EM-MCU Operation Manual

Crestron GLS-EM-MCU
Crestron Green Light® Power Meter
Control Unit
Operations Guide

Regulatory Compliance

This product is Listed to applicable UL Standards and requirements by Underwriters Laboratories Inc.

As of the date of manufacture, the GLS-EM-MCU has been tested and found to comply with specifications
for CE marking and standards per EMC and Radiocommunications Compliance Labelling.

Federal Communications Commission (FCC) Compliance Statement

This device complies with part 15 of the FCC Rules. Operation is subject to the following conditions:
(1) This device may not cause harmful interference and (2) this device must accept any interference received,
including interference that may cause undesired operation.

CAUTION: Changes or modifications not expressly approved by the manufacturer responsible for
compliance could void the user’s authority to operate the equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television reception,
which can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:

This document was prepared and written by the Technical Documentation department at:

• Reorient or relocate the receiving antenna

• Increase the separation between the equipment and receiver

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected

• Consult the dealer or an experienced radio/TV technician for help

Industry Canada (IC) Compliance Statement

This Class B digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

The specific patents that cover Crestron products are listed at patents.crestron.com.

Crestron, the Crestron logo, Crestron Green Light, Crestron Toolbox and Fusion EM are either trademarks or registered trademarks of Crestron

Electronics, Inc. in the United States and/or other countries. UL and the UL logo are either trademarks or registered trademarks of Underwriters

Laboratories, Inc. in the United States and/or other countries. Windows is either a trademark or registered trademark of Microsoft Corporation in

the United States and/or other countries. Other trademarks, registered trademarks, and trade names may be used in this document to refer to

either the entities claiming the marks and names or their products. Crestron disclaims any proprietary interest in the marks and names of others.

©2012 Crestron Electronics, Inc.

Crestron GLS-EM-MCU Crestron Green Light® Power Meter Control Unit

Contents

Crestron Green Light® Power Meter Control Unit: GLS-EM-MCU 1

Introduction ............................................................................................................................... 1

Features and Functions ................................................................................................ 1

Applications................................................................................................................. 3

Specifications .............................................................................................................. 4

Physical Description .................................................................................................... 5

Setup ........................................................................................................................................ 10

Identity Code ............................................................................................................. 10

Installation and Wiring .............................................................................................. 10

Hardware Hookup ..................................................................................................... 10

Programming Software ............................................................................................................ 11

Earliest Version Software Requirements for the PC ................................................. 11

Programming with SIMPL Windows ........................................................................ 11

Uploading and Upgrading ........................................................................................................ 13

Establishing Communication ..................................................................................... 13

Programs and Firmware ............................................................................................ 14

Program Checks ........................................................................................................ 14

Configuration ........................................................................................................................... 15

Recording Interval ..................................................................................................... 15

Electrical Tab ............................................................................................................ 15

Pulse Metering Tab.................................................................................................... 15

Problem Solving ...................................................................................................................... 16

Troubleshooting ......................................................................................................... 16

Reference Documents ................................................................................................ 16

Further Inquiries ........................................................................................................ 16

Future Updates .......................................................................................................... 16

Return and Warranty Policies .................................................................................................. 18

Merchandise Returns / Repair Service ...................................................................... 18

Crestron Limited Warranty ........................................................................................ 18

Operations Guide – DOC. 7294B Contents • i

Crestron GLS-EM-MCU Crestron Green Light® Power Meter Control Unit

Crestron Green Light® Power
Meter Control Unit: GLS-EM-MCU

Introduction

The GLS-EM-MCU is an Ethernet-based power metering control unit, designed to
log overall electricity usage in real time. It measures and tracks actual energy
consumption by attaching to the incoming electrical service and branch circuits. The
GLS-EM-MCU also works in unison with the GLS-EM-CTI and GLS-EM-CT to
provide more detailed data by tracking individual branch circuits in a home or office.
This data is then displayed on a touch screen, mobile device or computer for viewing
by users. Additionally, the GLS-EM-MCU system interfaces with Fusion EM™
Energy Management Software to provide reports with greater detail showing total
building consumption.

Features and Functions

• Power metering across 3 phases (main legs)

• Reports data to control system and Fusion EM™

• Monitors and logs RMS voltage, current, and active power

• Monitors up to 84 individual branch circuits for more detailed data

• Installs next to electrical panel

• Operable with 100-347 Volt, 2- and 3-phase systems

• Non-volatile memory reliably stores internally logged data

Three-Phase Monitoring

The main control unit (MCU) monitors both voltage and current to provide complete
statistics of a building's electricity consumption. To achieve this, the MCU connects
to line voltage of each phase (up to three) and neutral. Current transformers
(GLS-EM-CTs) clamp around each of the incoming feed wires. These CTs then wire
into the MCU's inputs. With the voltage and current data, the MCU calculates power
usage.

Individual Branch Monitoring

In many cases, users may want to monitor consumption by area, or even device. The
main control unit, in conjunction with the current transformer interface, enables
metering of multiple branch circuits. GLS-EM-CT current transformers are placed

Operations Guide – DOC. 7294B Crestron Green Light® Power Meter Control Unit: GLS-EM-MCU • 1

Crestron Green Light® Power Meter Control Unit Crestron GLS-EM-MCU

around the feed wire of each circuit, and then connected to the GLS-EM-CTI current
transformer interfaces. Up to four GLS-EM-CTI can connect to a single
GLS-EM-MCU for monitoring of up to 84 branch circuits.

Current Transformers

Current transformers are vital to metering power. Crestron® offers various split-core
models that work with 600, 400, and 200 Amp feeds; these devices clamp around
main feeds. Solid-core models exist for 50 and 20 Amp circuits; the wire must be
routed through the closed loop of the core.

Real-time and Logged Data

Inherent to the GLS-EM-MCU is the ability to provide both real-time and logged
power usage data. Real-time data can be used on touch screens or lobby displays to
show instantaneous usage. The energy usage screen within Fusion EM software
provides attractive charts and graphs that illustrate the facility's energy consumption.
Additionally, logged data can be shared with Fusion EM for more detailed reporting.
The GLS-EM-MCU stores the logged data in non-volatile memory to prevent data
loss.

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Crestron GLS-EM-MCU Crestron Green Light® Power Meter Control Unit

Applications

The following diagram shows a GLS-EM-MCU in a typical application.

GLS-EM-MCU in a Typical Application

Operations Guide – DOC. 7294B Crestron Green Light® Power Meter Control Unit: GLS-EM-MCU • 3

Crestron Green Light® Power Meter Control Unit Crestron GLS-EM-MCU

Specifications

Specifications for the GLS-EM-MCU are listed in the following table.

GLS-EM-MCU Specifications

SPECIFICATION DETAILS

Wired Communications

Ethernet

Branch Circuit Monitor Bus

Operating Voltage 100 to 347 Volts AC, 50/60Hz

Minimum 2-Series Control
System Update File

Enclosure Galvanized steel with powder coat finish

Environmental

Installation Location Indoor use only

Temperature 32º to 104º F (0º to 40º C)

Humidity 0% to 95% RH (non-condensing)

Heat Dissipation 10 BTU/Hr

Dimensions

Height 10 1/4 in (260 mm)

Width 10 3/16 in (260 mm)

Depth 3 7/16 in (88 mm)

Weight 64 oz (1.8 kg)

1. The latest software versions can be obtained from the Crestron Web site. Refer to the NOTE

following these footnotes.

2. Crestron 2-Series control systems include the AV2 and PRO2. Consult the latest Crestron Product

Catalog for a complete list of 2-Series control systems.

1,2

10/100 Mbps; auto-switching; auto­negotiating; auto-discovery; full/half duplex;
industry-standard TCP/IP stack; UDP/IP;
CIP; DHCP; IPv4; installer setup via
Crestron Toolbox™

Addressable data bus for connecting MCU
to CTI units; transfers value provided by CT
connected to CTI

Version 4.003.0007 or later

NOTE: Crestron software and any files on the Web site are for authorized Crestron
dealers and Crestron Authorized Independent Programmers (CAIPs) only. New users
must register to obtain access to certain areas of the site (including the FTP site).

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Crestron GLS-EM-MCU Crestron Green Light® Power Meter Control Unit

Physical Description

This section provides information on the connections, controls and indicators
available on the GLS-EM-MCU.

GLS-EM-MCU Physical View

Operations Guide – DOC. 7294B Crestron Green Light® Power Meter Control Unit: GLS-EM-MCU • 5

Crestron Green Light® Power Meter Control Unit Crestron GLS-EM-MCU

7 in

(178 mm)

Both Ends

7 3/4 in

(196 mm)

Both Ends

3 3/4 in

(96 mm)

Both Ends

(8x) Ø 3/16 in
(Ø 6 mm) Wall
Mounting Holes for
#8 or #10 Screws
(Not Supplied)

2 in

(51 mm)

1 11/16 in

(43 mm)

2 11/16 in

(69 mm)

10 1/4 in

(260 mm)

10 3/16 in
(260 mm)

10 1/8 in

(257 mm)

1 1/4 in

(32 mm)

3/8 in

(10 mm)

(12x) Knockouts for
1/2 in (13 mm) Conduit

3 7/16 in
(88 mm)

3 3/16 in
(81 mm)

3/16 in
(5 mm)

2 1/16 in
(53 mm)

6 in

(153 mm)

Both Ends

7 1/2 in

(191 mm)

Both Ends

2 7/16 in
(62 mm)

1 11/16 in

(44 mm)

1 5/16 in
(34 mm)

GLS-EM-MCU Overall Dimensions

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Crestron GLS-EM-MCU Crestron Green Light® Power Meter Control Unit

7 1/8 in

(181 mm)

(4x) Ø 1/4 in
(Ø 7 mm) Wall Mounting Holes
for #10 Screws (Not Supplied)

All Mating Connectors
Furnished with Unit

10 1/8 in

(257 mm)

1 9/16 in
(40 mm)

7 in

(178 mm)

1 1/2 in

(38 mm)

Ground Bus

GLS-EM-MCU Overall Dimensions (Cover Removed)

Operations Guide – DOC. 7294B Crestron Green Light® Power Meter Control Unit: GLS-EM-MCU • 7

Crestron Green Light® Power Meter Control Unit Crestron GLS-EM-MCU

Connectors, Controls & Indicators

Connectors, Controls & Indicators

# CONNECTORS*,

DESCRIPTION

CONTROLS &

INDICATORS

1 NEUT (1) terminal block, neutral input

2 LINE1 – LINE3 (3) terminal blocks, line input for each of

three separate phases

3 CT1 – CT3 (3) 2-pin detachable terminal block, input for

main leg current transformer

4 BRANCH CIRCUIT

MONITORS

(Continued on following page)

8 • Crestron Green Light® Power Meter Control Unit: GLS-EM-MCU Operations Guide – DOC. 7294B

(1) 8-pin detachable terminal block to be
attached to a current transformer interface
(GLS-EM-CTI)

Crestron GLS-EM-MCU Crestron Green Light® Power Meter Control Unit

Connectors, Controls & Indicators (Continued)

# CONNECTORS*,

DESCRIPTION

CONTROLS &

INDICATORS

5 LINE1 – LINE3 LEDs (3) Green LEDs, indicate line voltage is

present on each input LINE1 through LINE3

CT1 – CT3 LEDs (3) Green LEDs, indicate current is flowing

through CTs connected to ports CT1 through
CT3

6 PULSE INPUTS 1-4 (1) 8-pin 3.5 mm detachable terminal block

comprising (4) programmable digital inputs
(referenced to GND);
Input Voltage Range: 0-24 Volts DC;
Logic Threshold: ≥1.25 Volts DC active/high,
≤0.46 Volt DC inactive/low;
Frequency Range: 0.05 - 100 Hz

7 USB (1) USB Type B console port, for

communication with Crestron Toolbox™

8 RESET (1) Push button for hardware reset

9 SETUP (1) Miniature push button for setup; (1) Red

LED, indicates device is in Setup mode

10 NET (1) Yellow LED, indicates communication to

one or more GLS-EM-CTI

11 LAN (1) 8-wire RJ-45 jack (8P8C modular

female); 10BASE-T/100BASE-TX Ethernet
port

* Interface connectors for BRANCH CIRCUIT MONITORS, CT1 – CT3, and

INPUTS 1-4

ports are provided with the unit.

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Crestron Green Light® Power Meter Control Unit Crestron GLS-EM-MCU

NEUT & LINE 1 - 3:

Neutral and Line

Connections from

Main Power Supply

CT1 - 3:

Input for Main Leg

Current Transformers

BRANCH CIRCUIT

MONITORS:

From GLS-EM-CTI Current

Transformer Interface
(Supplied Separately)

PULSE INPUTS:

From Programmable

Digital Inputs

USB:

To PC for Initial Setup

and Programming

LAN:

10BASE-T/

100BASE-TX

Ethernet to LAN

Setup

Identity Code

The IP ID is set within the GLS-EM-MCU’s IP table using Crestron Toolbox™. For
information on setting an IP table, refer to the Crestron Toolbox help file. The IP IDs
of multiple GLS-EM-MCU devices in the same system must be unique.

When setting the IP ID, consider the following:

• The IP ID of each unit must match an IP ID specified in the SIMPL

Windows program.

• Each device using IP to communicate with a control system must have a

unique IP ID.

Installation and Wiring

For details on installation and wiring, refer to the latest version of the
GLS-EM-MCU Installation Guide (Doc. 7295), which is available from the Crestron
Web site (www.crestron.com/manuals

).

Hardware Connections for the GLS-EM-MCU

10 • Crestron Green Light® Power Meter Control Unit: GLS-EM-MCU Operations Guide – DOC. 7294B

Hardware Hookup

Make the necessary connections as called out in the illustration that follows this
paragraph. Apply power after all connections have been made.

When making connections to the GLS-EM-MCU, note that the included cable cannot
be extended.

NOTE: To prevent overheating, do not operate this product in an area that exceeds
the environmental temperature range listed in the table of specifications.

Crestron GLS-EM-MCU Crestron Green Light® Power Meter Control Unit

system by selecting hardware from the Device Library.

Programming Software

Have a question or comment about Crestron software?

Answers to frequently asked questions (FAQs) can be viewed in the Online Help
section of the Crestron Web site. To post a question or view questions submitted to
Crestron’s True Blue Support, log in at
users must establish a user account to fully benefit from all available features.

Software Requirements for the PC

NOTE: The latest software can be downloaded from the Crestron Web site
(www.crestron.com/software).

Crestron provides an assortment of Windows-based software tools to develop a
customized system. Use SIMPL Windows to create a program to control the
GLS-EM-MCU.

www.crestron.com/onlinehelp. First-time

Configuration Manager

Programming with SIMPL Windows

SIMPL Windows is Crestron’s premier software for programming Crestron control
systems. It is organized into two separate but equally important “Managers”:
Configuration and Program.

Configuration Manager is the view where programmers “build” a Crestron control

1. To incorporate the GLS-EM-MCU into the system, drag the

GLS-EM-MCU from the Lighting | Lighting (Green Light Series) folder of
the Device Library and drop it in the System Views.

Locating the GLS-EM-MCU in the Device Library

Operations Guide – DOC. 7294B Crestron Green Light® Power Meter Control Unit: GLS-EM-MCU • 11

Crestron Green Light® Power Meter Control Unit Crestron GLS-EM-MCU

2. If additional GLS-EM-MCU devices are to be added, repeat step 1 for each

device. Each GLS-EM-MCU is assigned a different IP ID number as it is
added.

3. If necessary, double click a device to open the “Device Settings” window

and change the IP ID, as shown in the following illustration.

“Device Settings: Crestron GLS-EM-MCU” Window

Program Manager

NOTE: The ID code specified in the SIMPL Windows program must
match the IP ID of each unit. Refer to “Identity Code” on page 10.

Program Manager is the view where programmers “program” a Crestron control
system by assigning signals to symbols.

The symbol can be viewed by double clicking on the icon or dragging it into Detail
View. Each signal in the symbol is described in the SIMPL Windows help file (F1).

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Crestron GLS-EM-MCU Crestron Green Light® Power Meter Control Unit

USB

PC Running

Crestron Toolbox

GLS-EM-MCU

PC Running

Crestron Toolbox

LAN

GLS-EM-MCU

Uploading and Upgrading

Crestron recommends using the latest programming software and that each device
contains the latest firmware to take advantage of the most recently released features.
However, before attempting to upload or upgrade it is necessary to establish
communication. Once communication has been established, files (for example,
programs or firmware) can be transferred to the control system (and/or device).
Finally, program checks can be performed (such as changing the device ID or
creating an IP table) to ensure proper functioning.

Establishing Communication

Use Crestron Toolbox for communicating with the GLS-EM-MCU; refer to the
Crestron Toolbox help file for details. There are two methods of communication:
USB and TCP/IP.

USB

TCP/IP

NOTE: Required for initial setup of Ethernet parameters.

NOTE: Required for loading projects and firmware.

USB Communication

The USB port on the GLS-EM-MCU connects to the USB port on the PC via the
included Type A to Type B USB cable:

1. Use the Address Book in Crestron Toolbox to create an entry using the

expected communication protocol (USB). The GLS-EM-MCU must be the
only Crestron USB device connected to the PC. The Address Book entry
must leave the Model, Hostname and Serial text box empty.

2. Display the GLS-EM-MCU’s “System Info” window (click the

communications are confirmed when the device information is displayed.

NOTE: Required for operation with a Crestron control system.

icon);

Operations Guide – DOC. 7294B Crestron Green Light® Power Meter Control Unit: GLS-EM-MCU • 13

Ethernet Communication

The GLS-EM-MCU connects to PC via Ethernet:

1. Establish USB communication between GLS-EM-MCU and PC.

2. Confirm Ethernet connection between GLS-EM-MCU and PC. If

connecting through a hub or router, use CAT5 straight through cables with

Crestron Green Light® Power Meter Control Unit Crestron GLS-EM-MCU

to register to obtain access to certain areas of the site, including the FTP site.)

8-pin RJ-45 connectors. Alternatively, use a CAT5 crossover cable to
connect the two LAN ports directly without using a hub or router.

3. Use the Device Discovery Tool in Crestron Toolbox to detect all Ethernet

devices on the network and their IP configuration. The tool is available in
Toolbox version 1.15.143 or later.

4. Use the Address Book in Crestron Toolbox to create an entry for the

GLS-EM-MCU with the GLS-EM-MCU’s TCP/IP communication
parameters.

SIMPL Windows

Firmware

5. Display the “System Info” window (click the

GLS-EM-MCU entry from the Address Book or the Address Book
drop-down menu.

icon) and select the

Programs and Firmware

Program or firmware files may be distributed from programmers to installers or from
Crestron to dealers. Firmware upgrades are available from the Crestron Web site as
new features are developed after product releases. One has the option to upload
programs via the programming software or to upload and upgrade via the Crestron
Toolbox. For details on uploading and upgrading, refer to the SIMPL Windows help
file or the Crestron Toolbox help file.

If a SIMPL Windows program is provided, it can be uploaded to the control system
using SIMPL Windows or Crestron Toolbox.

Check the Crestron Web site to find the latest firmware. (New users may be required

Upgrade GLS-EM-MCU firmware via Crestron Toolbox.

1. Establish communication with the GLS-EM-MCU and display the “System

Info” window.

2. Select Functions | Firmware… to upgrade the GLS-EM-MCU firmware.

Program Checks

Using Crestron Toolbox, display the “System Info” window (click the
select the Functions menu to display actions that can be performed on the

GLS-EM-MCU.

Be sure to use Crestron Toolbox to create the GLS-EM-MCU IP table.

1. Select Functions | IP Table Setup.

2. Add, modify or delete entries in the IP table. The GLS-EM-MCU can have

only one IP table entry.

3. A defined IP table can be saved to a file or sent to the device.

Edit the control system’s IP table to include an entry for the GLS-EM-MCU. The
entry should list the GLS-EM-MCU’s IP ID (specified on the GLS-EM-MCU’s IP
table) and the internal gateway IP address 127.0.0.1.

14 • Crestron Green Light® Power Meter Control Unit: GLS-EM-MCU Operations Guide – DOC. 7294B

icon) and

Crestron GLS-EM-MCU Crestron Green Light® Power Meter Control Unit

the information for Phase A, B and C or Phase A and B accordingly.

detected per a fixed 10 second time interval.

“No Pulses” indicating that the GLS-EM-MCU is not detecting any pulses.

Configuration

Configuration of the GLS-EM-MCU system is done using the GLS Energy Meter
Configuration Tool in Crestron Toolbox version 2.31, or later. Click Tools | GLS

2 or 3 Phase

CT Calibration

CT Size

Energy Meter Configuration Tool, or click
Refer to the applications help file for detailed information about the function of
specific buttons.

, to open the configuration tool.

Recording Interval

Logging the energy usage over a 15 minute interval is consistent with the industry
standard and suitable for most installations. The other two selections (5 and 10
minutes) are provided to give additional utility—for example, for a faster check
during setup.

Electrical Tab

The selection is based on the type of electrical service at the installation; select
2-Phase (120/240 VAC) or 3-Phase (277/480 VAC). Once selected, the tool displays

The current transformer calibration code is a 21 character string that is stored within
the GLS-EM-MCU. The code is placed on the label of the GLS-EM-CT and must be
entered into the current transformer calibration field of the GLS Energy Meter
Configuration Tool.

The value (20A, 50A, 200A, 400A, 600A) is automatically generated based on the
calibration code that is entered. If the calibration code is deleted, the current
transformer size can be selected by the user via a drop-down menu that is accessed
by clicking on the present value displayed.

Status

Conversion Factor

Pulses

Status

The status menu displays one of two possible codes:

• “OK” indicating current transformer is installed correctly.

• “REVERSED” indicating that white and black leads of current transformer

are transposed at terminal block or that the current transformer is installed
with the wrong side facing the electrical feed source.

Pulse Metering Tab

The conversion factor is user selectable and based on the number of pulses per
physical quantity measured (i.e., transducer type).

Displays number of actual pulse edges (high to low and low to high transitions)

The status menu displays one of two possible codes:

• “OK” indicating that the GLS-EM-MCU is properly receiving pulses.

•

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Crestron Green Light® Power Meter Control Unit Crestron GLS-EM-MCU

Problem Solving

Troubleshooting

The following table provides corrective action for possible trouble situations. If
further assistance is required, please contact a Crestron customer service
representative.

GLS-EM-MCU Troubleshooting

TROUBLE POSSIBLE CAUSE(S) CORRECTIVE ACTION

Device does not
function.

Device is not powered

CT1 – CT3 LED is
flashing.

Loss of
functionality due
to electrostatic
discharge.

Device is not
communicating with the
network.

correctly.

GLS-EM-CT is
incorrectly wired.

GLS-EM-CT is
improperly installed.

Improper grounding. Check that all ground

Use Crestron Toolbox to poll
the network. Verify network
connection to the device.

Check that voltage levels are
correct as measured from
each phase to neutral.

Ensure that black and white
wires are properly connected
to the BLK and WHT
terminals on the device.

Verify that device is facing the
proper direction. Ensure that
the THIS SIDE TOWARDS
SOURCE label faces the
source.

connections have been made
properly.

Reference Documents

The latest version of all documents mentioned within the guide can be obtained from
the Crestron Web site (www.crestron.com/manuals

List of Related Reference Documents

).

DOCUMENT TITLE

GLS-EM-MCU Installation Guide

Further Inquiries

To locate specific information or to resolve questions after reviewing this guide,
contact Crestron's True Blue Support at 1-888-CRESTRON [1-888-273-7876] or
refer to the listing of Crestron worldwide offices on the Crestron Web site
(www.crestron.com/offices) for assistance within a particular geographic region.

To post a question about Crestron products, log onto the Online Help section of the
Crestron Web site (www.crestron.com/onlinehelp). First-time users must establish a
user account to fully benefit from all available features.

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Crestron GLS-EM-MCU Crestron Green Light® Power Meter Control Unit

Future Updates

As Crestron improves functions, adds new features and extends the capabilities of
the GLS-EM-MCU, additional information may be made available as manual
updates. These updates are solely electronic and serve as intermediary supplements
prior to the release of a complete technical documentation revision.

Check the Crestron Web site periodically for manual update availability and its
relevance. Updates are identified as an “Addendum” in the Download column.

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Crestron Green Light® Power Meter Control Unit Crestron GLS-EM-MCU

Return and Warranty Policies

Merchandise Returns / Repair Service

1. No merchandise may be returned for credit, exchange or service without prior authorization

from Crestron. To obtain warranty service for Crestron products, contact an authorized
Crestron dealer. Only authorized Crestron dealers may contact the factory and request an
RMA (Return Merchandise Authorization) number. Enclose a note specifying the nature of
the problem, name and phone number of contact person, RMA number and return address.

2. Products may be returned for credit, exchange or service with a Crestron Return Merchandise

Authorization (RMA) number. Authorized returns must be shipped freight prepaid to
Crestron, 6 Volvo Drive, Rockleigh, N.J. or its authorized subsidiaries, with RMA number
clearly marked on the outside of all cartons. Shipments arriving freight collect or without an
RMA number shall be subject to refusal. Crestron reserves the right in its sole and absolute
discretion to charge a 15% restocking fee plus shipping costs on any products returned with
an RMA.

3. Return freight charges following repair of items under warranty shall be paid by Crestron,

shipping by standard ground carrier. In the event repairs are found to be non-warranty, return
freight costs shall be paid by the purchaser.

Crestron Limited Warranty

Crestron Electronics, Inc. warrants its products to be free from manufacturing defects in materials and
workmanship under normal use for a period of three (3) years from the date of purchase from Crestron,
with the following exceptions: disk drives and any other moving or rotating mechanical parts, pan/tilt heads
and power supplies are covered for a period of one (1) year; touch screen display and overlay components
are covered for 90 days; batteries and incandescent lamps are not covered.

This warranty extends to products purchased directly from Crestron or an authorized Crestron dealer.
Purchasers should inquire of the dealer regarding the nature and extent of the dealer's warranty, if any.

Crestron shall not be liable to honor the terms of this warranty if the product has been used in any
application other than that for which it was intended or if it has been subjected to misuse, accidental
damage, modification or improper installation procedures. Furthermore, this warranty does not cover any
product that has had the serial number altered, defaced or removed.

This warranty shall be the sole and exclusive remedy to the original purchaser. In no event shall Crestron
be liable for incidental or consequential damages of any kind (property or economic damages inclusive)
arising from the sale or use of this equipment. Crestron is not liable for any claim made by a third party or
made by the purchaser for a third party.

Crestron shall, at its option, repair or replace any product found defective, without charge for parts or labor.
Repaired or replaced equipment and parts supplied under this warranty shall be covered only by the
unexpired portion of the warranty.

Except as expressly set forth in this warranty, Crestron makes no other warranties, expressed or implied,
nor authorizes any other party to offer any warranty, including any implied warranties of merchantability or
fitness for a particular purpose. Any implied warranties that may be imposed by law are limited to the terms
of this limited warranty. This warranty statement supersedes all previous warranties.

18 • Crestron Green Light® Power Meter Control Unit: GLS-EM-MCU Operations Guide – DOC. 7294B

Crestron GLS-EM-MCU Crestron Green Light® Power Meter Control Unit

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Operations Guide – DOC. 7294B Crestron Green Light® Power Meter Control Unit: GLS-EM-MCU • 19

Crestron Electronics, Inc. Operations Guide – DOC. 7294B

15 Volvo Drive Rockleigh, NJ 07647 (2032458)
Tel: 888.CRESTRON 09.12
Fax: [phone] Specifications subject to
www.crestron.com change without notice.