Crestron GLS-EM-MCU User manual

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

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

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Operations Guide – DOC. 7294B Contents
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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

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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
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
•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

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

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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
10/100 Mbps; auto-switching; auto-
negotiating; 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
Operating Voltage 100 to 347 Volts AC, 50/60Hz
Minimum 2-Series Control
System Update File1,2
Version 4.003.0007 or later
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.
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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Physical Description
This section provides information on the connections, controls and indicators
available on the GLS-EM-MCU.
GLS-EM-MCU Physical View

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GLS-EM-MCU Overall Dimensions
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)

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GLS-EM-MCU Overall Dimensions (Cover Removed)
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

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Connectors, Controls & Indicators
Connectors, Controls & Indicators
# CONNECTORS*,
CONTROLS &
INDICATORS
DESCRIPTION
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
(1) 8-pin detachable terminal block to be
attached to a current transformer interface
(GLS-EM-CTI)
(Continued on following page)

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Connectors, Controls & Indicators (Continued)
# CONNECTORS*,
CONTROLS &
INDICATORS
DESCRIPTION
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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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 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.
Hardware Connections for the 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
NOTE: To prevent overheating, do not operate this product in an area that exceeds
the environmental temperature range listed in the table of specifications.

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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 www.crestron.com/onlinehelp. First-time
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.
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 Configuration Manager is the view where programmers “build” a Crestron control
system by selecting hardware from the Device Library.
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

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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
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 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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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 NOTE: Required for initial setup of Ethernet parameters.
NOTE: Required for loading projects and firmware.
USB Communication
USB
PC Running
Crestron Toolbox
GLS-EM-MCU
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 icon);
communications are confirmed when the device information is displayed.
TCP/IP NOTE: Required for operation with a Crestron control system.
Ethernet Communication
PC Running
Crestron ToolboxLAN GLS-EM-MCU
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

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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.
5. Display the “System Info” window (click the icon) and select the
GLS-EM-MCU entry from the Address Book or the Address Book
drop-down menu.
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.
SIMPL Windows If a SIMPL Windows program is provided, it can be uploaded to the control system
using SIMPL Windows or Crestron Toolbox.
Firmware Check the Crestron Web site to find the latest firmware. (New users may be required
to register to obtain access to certain areas of the site, including the FTP site.)
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 icon) and
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.

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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
Energy Meter Configuration Tool, or click , to open the configuration tool.
Refer to the applications help file for detailed information about the function of
specific buttons.
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
2 or 3 Phase 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 information for Phase A, B and C or Phase A and B accordingly.
CT Calibration 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.
CT Size 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 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
Conversion Factor The conversion factor is user selectable and based on the number of pulses per
physical quantity measured (i.e., transducer type).
Pulses Displays number of actual pulse edges (high to low and low to high transitions)
detected per a fixed 10 second time interval.
Status The status menu displays one of two possible codes:
•“OK” indicating that the GLS-EM-MCU is properly receiving pulses.
•
“No Pulses” indicating that the GLS-EM-MCU is not detecting any pulses.

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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
communicating with the
network.
Use Crestron Toolbox to poll
the network. Verify network
connection to the device.
Device is not powered
correctly.
Check that voltage levels are
correct as measured from
each phase to neutral.
CT1 – CT3 LED is
flashing.
GLS-EM-CT is
incorrectly wired.
Ensure that black and white
wires are properly connected
to the BLK and WHT
terminals on the device.
GLS-EM-CT is
improperly installed.
Verify that device is facing the
proper direction. Ensure that
the THIS SIDE TOWARDS
SOURCE label faces the
source.
Loss of
functionality due
to electrostatic
discharge.
Improper grounding. Check that all ground
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.