The DTS SMX is a weather-proof energy sub-meter that operates in any environment. It is easy to install and is designed to mount on any surface; providing the most accurate data acquisition. This meter works with all “safe” 333mV, 5A or flexible Rogowski current transformers (CTs) and requires no external power source to operate. A backlit LCD display provides local visibility to the measured parameters.
This meter has some exciting features, including field configurable DIP switches, Fused Voltage Terminals, Auto-topology Phase Detection, on-board CT Reverse Algorithms for automatic correction of improper field mounted CTs; all contained in a weatherproof surface mounted enclosure. For remote configuration, the DTS SMX comes with our free DTS Config software platform; conveniently choose from over 200 parameters at the frequency you require.
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 3.0 or LonWorks (model dependent). It easily integrates with Building Automation Systems and Energy Monitoring Software. Also, if you decide to integrate renewable energy sources in the future, the DTS SMX will conveniently operate as a Bi-directional NET meter. It is Designed and Manufactured in the USA and complies with the Buy American Provisions of ARRA Section 1605.
Features
Line powered single / three phase energy submeter
NEMA 4x weather-proof surface mount enclosure
Bi-directional for renewable systems (NET metering)
Interfaces with “safe” 333mV, flexible Rogowski CTs or 1/5A CTs
Up to 3 x 333mV CT inputs per phase using option board CPCC-1172 ML
Fused Voltage Terminals included for quick installation
Easy access voltage and current terminations
CT ratio set by DIP switches
Embedded Ethernet connectivity – Modbus/TCP, BACnet/IP, SNMP or DNP 3.0
RS-485 connectivity – Modbus RTU or BACnet MS/TP
Communications setting via DIP switches for Modbus RTU
LonWorks FT-10 communications
Pulse output standard
Pulse output models approved for VRF / VRV applications
2 digital status/counter inputs OR digital outputs – optional
User configurable using DTS Config software
User-definable Modbus register area
Compatible with Energy Management Software suites
SunSpec Alliance certified
Designed and Manufactured in the USA. Complies with the Buy American Provisions of ARRA Section 1605
** CTs excluded
Specifications
Measuring Circuits
Voltage range: 208-480V ac, L-L, 3 or 4 W, 600V 4W option
Rated voltage: 280 Vac L-N / 485 Vac L-L , 347 Vac L-N
Voltage overload: 1.2 x
Voltage burden: <0.1 VA @ 280 V ac L-N
Frequency: 45 to 65 Hz
Rated current: 1A to 5A isolated
333 mV for mV or Rogowski CT versions
Current overload: 1.5 x for 1A or 5A versions
1.2 x for mV versions
Current input burden: 0.5 VA @ 5 A
Power overload: 1.2 x
Accuracy
Voltage: 0.5%, <0.2% typical (80-120%)
Current: 0.5%, <0.2% typical (10-120%)
Power: 0.5%, <0.2% typical (10-120%)
Power Factor: 0.5% (between 0.5 and 1.0)
Energy:** Class 0.5 (ANSI C12.20)
Mechanical
Connection: #6-32 screw terminals with captive washers
Case Material: Polycarbonate
Protection: Nema 4x
Dimensions: 11.45”(291mm) H x 4.92”(125mm) D x 8.98”(228mm) W
Weight: 3.75lbs (1.7 kg)
Voltage Supply
Voltage: Powered from Phase A & B or Phase A & Neutral (model dependent)
Frequency: 50/60 Hz
Tolerance: -10%, + 10%
Burden: <5VA
Operating temp: -4º to 158ºF (-20º to 70ºC)
Storage temp: -40º to 185ºF (-40º to 85ºC)
Humidity: 5 to 95% R.H. non-condensing
Communications (Serial)
Connection: 3 way pluggable, screw terminal
Protocols: Modbus RTU or BACnet MS/TP
Communications (LonWorks)
Connection: 2 way pluggable, screw terminal
Protocols: LonWorks FT-10
Communications (Ethernet)
Connection: RJ45, 10/100Base-T
Protocols: Modbus TCP or BACNet/IP or SNMP or DNP 3.0 over IP
Pulse / Status Outputs (Optional)
Type: Potential Free, N.O. Solid State Relay
Pulse Width: 100 mS default
Min 50 mS, User configurable up to 10 Seconds
Max 10 Pulses per Second
Pulse Rate: 1 pulse / 1 kWh default, User configurable
Max On-Resistance: 30 ohm
Max switching voltage: 50Vdc or 30Vac
Max switching current: 120mA (350mA for 10mS)
Approved for VRF / VRV applications
Connection: Isolated Pin-Pair (Output 3, Outputs 1 and/or 2)
Counter / Status Inputs (Optional)
Type: Dry Contact
Min Pulse Width: 50mS, Max 10 Pulses per Second
Max Current/Voltage: 15mA / 18V
Connection: 2 Pin-Pairs (Inputs 1 and/or 2)
