LTSE Ethernet-to-Analog Converter & Transmitter

Converts Ethernet serial data to an isolated, scaled analog output signal.

Ethernet transmitter

Features

  • Converts Ethernet data to an isolated, scaled 4-20 mA or 0-10V transmitter output
  • Supports Modbus TCP, Modbus RTU, Modbus ASCII, and TDM ASCII protocols
  • Able to retrieve data from long character strings
  • Serial data rates from 300 to 19,200 bps
  • Analog output is isolated from communications and power
  • Analog resolution 0.0015% of span (16 bits), accuracy ±0.02% of span
  • Dual solid state relays for alarm or control, isolated (standard)
  • Universal 85-264 Vac / 90-300 Vdc or 10-48 Vdc / 12-32 Vac power
  • Power over Ethernet (PoE) user selectable with 10-48 Vdc power option
Description
LTS6 serial to analog transmitter

The LTSE Ethernet input, analog output transmitter accepts Ethernet serial data using the Modbus protocol, TDM ASCII protocol, or direct ASCII characters, and converts this data to an isolated, scalable 4-20 mA, 0-20 mA or 0-10V analog output. The unit is housed in transmitter case which is only 22.5 mm (0.89") thick and fits on a 35 mm DIN rail. It is normally powered by AC (85-264 Vac), but can optionally be powered by low voltage AC or DC.

Standard features of the LTSE include:

  • Ethernet serial data input, isolated. The Modbus protocol, TDM ASCII protocol, or ASCII characters are supported at data rates to 19200 bps. Modbus implementation is fully compliant with Modbus over Serial Line Specification V1.0 (2002) in RTU or ASCII operation, with up to 247 digital addresses. Using the TDM ASCII protocol, the serial-to-analog converter is able to retrieve digital data from long character strings. Users can specify character positions, start and stop ASCII characters, how many characters to skip, and how many characters to process. Slave operation requires connection to a master.
  • Analog transmitter output, 16-bit, scalable and isolated. User selectable 4-20 mA, 0-20 mA or 0-10V levels. 16-bit resolution provides an ultra-fine resolution of 0.0015% and accuracy better than 0.02% of output span. Output isolation from signal, power and serial communication grounds is provided by a separate on-board transmitter power supply, thereby eliminating potential problems caused by ground loops. The supply can drive 20 mA into a 500 ohm (or lower) load for 10V compliance, or 10V into 5K ohm (or higher) load for 2 mA compliance.
  • Ability to extract readings from long ASCII data strings. You can specify character positions, start and stop ASCII characters, how many characters to skip, and how many characters to process. Slave operation requires connection to a master. Not applicable to the Modbus protocol.
  • Dual solid state relays for control or alarm, isolated. Rated 120 mA at 140 Vac or 180 Vdc.
  • Universal AC power, 85-264 Vac, or low voltage power, 10-48 Vdc or 12-32 Vac.

Discovery and configuration of Ethernet Nodes is easily achieved with TDM's Node Manager Software, and the discovered transmitters can then be programmed using TDM's Instrument Setup Software. Both softwares run on a PC under MS Windows and can be downloaded from this website at no charge.

 Ethernet network by TD Micronic
Specifications
LTSE Serial Input, Analog Output DIN Rail Transmitter
Serial Data Input (standard)
Type 10/100 Base-T Ethernet per IEEE 802.3
Data Rates 300, 600, 1200, 2400, 4800, 9600, 19200 baud
Isolation 250V rms working, 2.3 kV rms per 1 min test
Serial Protocols Modbus TCP, Modbus RTU, Modbus ASCII, TDM ASCII
Modbus Compliance Modbus over Serial Line Specification V1.0 (2002)
Digital Addresses 247 for Modbus, 31 for TDM ASCII
Analog Output (standard)
Output Levels 4-20 mA, 0-20 mA, 0-10 Vdc (selectable)
Compliance, 4-20 mA 10V ( 0-500Ω load )
Compliance, 0-10V 2 mA ( 5 kΩ load )
Output Resolution 16 bits (65,536 steps)
Output Accuracy 0.02% of output span
Output Update Rate Determined by input data rate
Output Isolation 250V rms working, 2.3 kV rms per 1 minute test
Dual Relay Output (standard)
Relay Type Two solid state relays, SPST, normally open, Form A
Load Rating 120 mA at 140 Vac or 180 Vdc
Power Input
Standard Power 85-264 Vac or 90-300 Vdc
Low Power Option 10-48 Vdc or 12-32 Vac
Power Frequency DC or 47-63 Hz
Power Isolation 250V rms working, 2.3 kV rms per 1 min test
Power Consumption 2W typical, 3W with max excitation output
Mechanical
Dimensions 129 x 104 x 22.5 mm case
Mounting 35 mm rail per DIN EN 50022
Electrical Connections Plug-in screw-clamp connectors
Environmental
Operating Temperature 0°C to 55°C
Storage Temperature -40°C to 85°C
Relative Humidity 95% at 40°C, non-condensing
Cooling Required Mount transmitters with ventilation holes at top and bottom. Leave 6 mm (1/4") between transmitters, or force air with a fan.
Pinout
LTSE Ethernet Input, Analog Output DIN Rail Transmitter
Ethernet to Analog Converter Pinout

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