Measurlogic DTS SMX User manual

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DTS SMX
Surface mounting, outdoor rated
Revenue grade electrical sub-meter

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1PRODUCT OVERVIEW ........................................................................................................................................................ 3
1.1 SUPPLIED ITEMS ..................................................................................................................................................................... 3
1.2 DOCUMENT CONVENTIONS ...................................................................................................................................................... 4
1.3 PRODUCT SPECIFICATION ......................................................................................................................................................... 4
1.3.1 Current Inputs ............................................................................................................................................................ 4
1.3.2 Service Type ............................................................................................................................................................... 4
1.4 DTS SMX LAYOUT ................................................................................................................................................................. 5
2INSTALLATION ................................................................................................................................................................... 6
2.1 SAFETY GUIDELINES ................................................................................................................................................................ 6
2.2 PRODUCT DIMENSIONS............................................................................................................................................................ 7
2.3 MOUNTING REQUIREMENTS AND GUIDELINES.............................................................................................................................. 7
3CONNECTING TO THE DTS SMX.......................................................................................................................................... 9
3.1 VOLTAGE CONNECTIONS .......................................................................................................................................................... 9
3.2 VOLTAGE CONNECTIONS (MEDIUM VOLTAGE WITH 2PTS) .......................................................................................................... 10
3.3 333MVAND ROGOWSKI COIL CT............................................................................................................................................ 11
3.3.1 Single Phase 2/3 Wire Example ............................................................................................................................... 11
3.3.2 3-Phase with Optional Neutral (Model Dependent) ................................................................................................ 11
3.3.3 Connecting the CTs from Multiple Loads to the Screw Terminals............................................................................ 12
3.3.4 Connecting the CTs from Multiple Loads to the 333mV CT Daughter Board ........................................................... 13
3.4 5AMP SECONDARY CT DAUGHTER BOARD ............................................................................................................................... 14
3.5 DTS SMX DIGITAL I/O CIRCUIT (OPTIONAL)............................................................................................................................. 15
3.5.1 Digital Outputs......................................................................................................................................................... 15
3.5.2 Digital Inputs............................................................................................................................................................ 15
4MAINTENANCE AND SERVICE .......................................................................................................................................... 15
4.1 VOLTAGE FUSES ................................................................................................................................................................... 16
4.1.1 Voltage Fuse Specifications ..................................................................................................................................... 16
4.1.2 Fuse Location and Replacement .............................................................................................................................. 16
4.2 BATTERY ............................................................................................................................................................................. 17
4.2.1 Battery Specifications .............................................................................................................................................. 17
4.2.2 Battery Location and Placement.............................................................................................................................. 17
4.2.3 Disposal.................................................................................................................................................................... 18
4.2.4 First Aid.................................................................................................................................................................... 18
5DTS SMX COMMUNICATIONS INTERFACE........................................................................................................................ 19
5.1 RS-485 2-WIRE COMMUNICATIONS ....................................................................................................................................... 19
5.2 ETHERNET COMMUNICATIONS ................................................................................................................................................ 20
5.3 CONFIGURING THE DIP SWITCHES –COMMUNICATIONS SETTINGS,CT RATINGS AND OTHER OPTIONS................................................. 20
5.3.1 Serial Communications Settings (Modbus RTU & BACnet MS/TP)........................................................................... 20
5.3.2 CT Ratings, Digital Output Mapping and Backlight ................................................................................................. 21
6LED DEFINITIONS ............................................................................................................................................................. 25
6.1 STATUS LED........................................................................................................................................................................ 25
6.2 REMOTE LED....................................................................................................................................................................... 25
6.3 PULSE LED.......................................................................................................................................................................... 25
7INSTALLATION OF DTS CONFIG AND MONITORING SOFTWARE....................................................................................... 25
7.1 SETTING THE REAL TIME CLOCK USING DTSCONFIG .................................................................................................................... 25
7.2 DTS SMX TO SERVER............................................................................................................................................................ 26

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1PRODUCT OVERVIEW
The one revenue grade meter for all applications.
Your new DTS SMX energy sub-meter is one of the most versatile meters available on the market. The DTS SMX
can operate in any environment, requires no external power source to operate, and works with all UL or ETL
listed 333mV and 1A/5A current transformers (model dependent).
For ease of installation, the DTS SMX is designed to mount on any surface and comes standard with a bright
backlit LCD display.
Some of the exciting features provided with the DTS SMX are
•field user-configurable CT ranges
•Fused Voltage Terminals
•Auto-topology Phase Detection and on-board CT Algorithms for automatic correction of reversed field
mounted CTs
For remote configurability, your DTS SMX comes with our freely downloadable DTS Config software tool
The DTS SMX provides you very accurate data acquisition and is certified to ANSI C12.20 Class 0.5 Revenue
Grade. Whether communicating via an RS-485 or Ethernet connection, the DTS SMX supports most accepted
protocols, including Modbus RTU, Modbus TCP, BACnet MS/TP, BACnet/IP, SNMP, DNP 3.00 or LonWorks.
Also, if in the future, you decide to integrate renewable energy sources, the DTS SMX will conveniently operate
as a Bi-Directional NET meter. Easily integrates with Building Automation Systems and Energy Monitoring
Software.
Designed and Manufactured in the USA and complies with the Buy American Provisions of ARRA Section 1605.
Thank you for choosing Measurlogic and a meter from the DTS Family.
1.1 Supplied Items
Check that the meter and equipment matches your order specifications and has not been damaged during
shipping. Verify that the following item(s) match with the corresponding model from the data sheet:
•Installation Guide
•DTS SMX power & energy meter
•3x Pre-installed fuses for line voltage inputs
•6-Pin green pluggable screw terminal connector for digital inputs and/or outputs (if applicable)
•3-Pin green pluggable screw terminal connector for serial communications wiring (if applicable)
•3-Pin green pluggable screw terminal connector for DC auxiliary power input wiring (if applicable)

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1.2 Document Conventions
SYMBOLS
ATTENTION –PLEASE CONSULT THE
INSTALLATION MANUAL
WARNING –RISK OF ELECTRICAL
SHOCK
1.3 Product Specification
WARNING
Verify that the model of DTS SMX that was shipped is used
for the correct installation. Failure to use the correct CT’s
or connecting too high a voltage can result in permanent
damage to the DTS Meter.
DTS SMX - Ax-xx-x-F-xx
1.3.1 Current Inputs
Current
Inputs
Value
Description
Notes
A
3
333mV CT
Any 333mV CT is acceptable
5
1 Amp or 5 Amp CT
User supplied shorting blocks are
required with these CT’s
9
Unburdened CT
Only use the CT’s that came with the unit
Note: Make sure that the DIP Switch settings on the DTS SMX are set to the correct CT
Primary. See section 5.3.1 on page 20. If all Dip Switch settings on the DTS SMX are “off”
please contact Measurlogic.
1.3.2 Service Type
Service Type
Value
Description
Neutral Required
Neutral Optional
F
N
(1P 2W, 1P 3W, 3P 4W) 120 –277Vac L–N
●
2
(3P 3/4W) 208 –240 Vac L–L
●
4
(3P 3/4W) 480 Vac L–L
●
6
(3P 4W) 600Vac L–L
●

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1.4 DTS SMX Layout
The following figure shows the layout of the DTS SMX as well as the section number and pages of the installation
guide that describe how to interact with each of the features of the DTS SMX.
Note that not all features listed here are included with every DTS SMX. Please refer to the model number to
determine which features are included.
•Voltage and CT connection, Section 3.2, Page 10
•Digital I/O, Section 3.5, Page 15
•Serial Communications, Section 5.1, Page 19
•Ethernet Communications, Section 5.2, Page 20
•DIP Switch Setting, Section 5.3, page 20
Serial
Communications
Ethernet
Communications
Voltage
Connections
CT
Connections
Digital
I/O
DIP
Switches

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2INSTALLATION
2.1 Safety Guidelines
WARNING
The following installation instructions are intended for qualified personnel only. To avoid
the risk of electrical shock and personal injury, do not perform additional tasks not stated
in this procedure unless you are qualified to do so.
Always adhere to the following safety guidelines:
•Only qualified personnel or licensed electricians should handle the installation. Input voltages to
the DTS SMX can be hazardous.
•Follow all applicable local and national electric codes.
•Verify input voltage and current are within thresholds for the specific DTS SMX model. (See Product
Specification on page 4)
•Use only UL or ETL listed current transformers. ONLY USE CURRENT TRANSFORMERS THAT
ARE SPECIFIED BY THE MODEL OF DTS SMX. USE OF ANY OTHER CURRENT
TRANSFORMER OTHER THAN THE ONE SPECIFIED BY THE DTS MODEL CAN RESULT IN
PERMANENT DAMAGE TO THE DTS SMX.
•Ensure that the in-line fuses located on the main board of the DTS SMX are fitted and securely
fastened.
•Avoid any electrostatic discharge while dealing with any of the internal components of the DTS SMX
by first touching a grounded structure prior to handling internal components.
•Before applying power make sure that all current transformer and voltage connections are securely
connected to the main board of the DTS SMX.
•If the DTS SMX is installed incorrectly any built in safety features may no longer be functional.
•Before opening the DTS SMX ensure that all power running to the DTS SMX is removed.
•Under normal operation the DTS SMX should be secured with a user supplied lock to ensure there
is no unauthorized access to the live connections in the enclosure.

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2.2 Product Dimensions
•Make sure that holes are spaced 5.98” (159 mm) horizontally and 11.3” (287 mm) vertically.
•Screw heads should have a diameter greater than 0.31” (7 mm) or utilize a suitably sized washer.
2.3 Mounting Requirements and Guidelines
ATTENTION
Make sure to follow the following mounting requirements
and guidelines when mounting the DTS SMX.
When mounting the DTS SMX make sure to follow these guidelines:
•Mount the DTS SMX as close as possible to the electrical panel being monitored.
•Make sure there is at least 4” of space between the latch of the lid and any obstruction.
•Make sure that the lid can fully open and close without any interference.
•Position the DTS SMX such that the labeling and screen can be read from the upright position.
•Do not use the DTS SMX enclosure as a guide to drill mounting holes. This can damage the DTS
SMX enclosure.
4” Clearance

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•When mounting the DTS SMX, make sure to choose the appropriate fastener or anchor for the type
of wall that the DTS SMX will be mounted on.
•It is recommended that two separate conduits be run for voltage and current connections.
•If installing the DTS SMX outdoors, run the electrical conduits from the bottom of the DTS SMX to
the electrical panel being monitored. If necessary install drip hook/loops to allow water to flow away
from the DTS SMX or electrical panel.
•Only UL or ETL rated conduits and glands should be used.
•Only UL or ETL Current Transformers should be used.
•A spade or ring lug termination is recommended for optimally secure voltage and current
connections.
•A UL or ETL certified circuit-breaker or fused disconnect must be installed within easy reach of the
DTS SMX. The circuit-breaker or fused disconnect must be marked as the disconnecting device for
the DTS SMX.
•14 to 12 AWG wire should be used for the voltage and ground with a 300V or 600V insulation
depending on installation type.
•Use the breaker guide below to determine the type of breaker to use for installation. The breaker is
used to protect the wiring from the breaker panel to the inputs of the DTS SMX.
BREAKER GUIDE
Gauge of Wire
Recommended Breaker
14
15 Amp 3-Pole Breaker
12
20 Amp 3-Pole Breaker

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3CONNECTING TO THE DTS SMX
3.1 Voltage Connections
The DTS SMX comes with easy to use voltage connection points and in-line fuse connections.
ATTENTION
Voltage connections should come from the same lines that
the CT’s will be connected to.
In-line fuse clips. See
section 4.1 for fuse
details.
Load→
Source
A
N
B
C
Use appropriate breaker and wire
for voltage connections. See
section 2.3 for reference.
If present, terminate GROUND here
If present, terminate NEUTRAL here
Silver Voltage screws.
Terminate voltage connections
here.

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3.2 Voltage Connections (Medium Voltage with 2 PTs)
Potential Transformers (PTs) need to be used to monitor medium voltage applications. Normally two delta PTs
are used without a neutral connection. This section shows the wiring connection for these two PTs.
WARNING
Extreme care should be exercised with medium voltage
applications. The connection diagram shown below is a
simplified connection diagram only. Connect the PTs strictly
according to national code and as recommended by the PT
manufacturer.
In-line fuse clips. See
section 4.1 for fuse
details.
Load→
Source
A
N
B
C
Primary fusing shown is illustrative
only. Actual fusing is normally an
integral part of the PT itself.
If present, terminate GROUND here
No NEUTRAL Connection
Silver Voltage screws.
Terminate voltage connections
here.
Use wiring according to national
code and as recommended by the
PT manufacturer.