Laurel Electronics LTSE6 User Manual

LAUREL

Analog Converter

ELECTRONICS, INC.

LTSE6 Ethernet-to-

Standard Features

•

Converts Ethernet data to an isolated, scaled 4-20 mA or 0-10V transmitter output

•

Supports Modbus TCP, Modbus RTU, Modbus ASCII, and Laurel 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

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Dual solid state relays for alarm or control, isolated (standard)

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Universal 85-264 Vac / 90-300 Vdc or 10-48 Vdc / 12-32 Vac power

•

Power over Ethernet (PoE) jumper selectable with 10-48 Vdc supply

Description

The LTSE6 Ethernet input, analog output transmitter accepts

Ethernet serial data using the Modbus protocol, Laurel 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 Include:

•

Ethernet serial data input, isolated. The Modbus protocol,
Laurel 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 Laurel ASCII protocol, the serial-to­analog 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.

& Transmitter

•

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. Rated 120 mA
at 130 Vac or 170 Vdc, isolated.

•

Universal AC power supply for 85-264 Vac.

•

Optional low voltage power, 10-48 Vdc or 12-32 Vac.

Discovery and configuration of Laureate Ethernet Nodes is

easily achieved with Laurel's Node Manager Software, and the
discovered transmitters can then be programmed using Laurel's
Instrument Setup Software. Both softwares run on a PC under
MS Windows and can be downloaded at no charge.

LAUREL

ELECTRONICS INC., 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel [phone] • www.laurels.com 1

Specifications

Serial Data Input (standard)

Type
Data Rates
Isolation
Serial Protocols
Modbus Compliance
Digital Addresses

Analog Output (standard)

Output Levels
Compliance, 4-20 mA
Compliance, 0-10V
Output Resolution
Output Accuracy
Output Update Rate
Output Isolation

Dual Relay Output (standard)

Relay Type
Load Rating

Power Input

Standard Power
Low Power Option
Power Frequency
Power Isolation
Power Consumption

Mechanical

Dimensions
Mounting
Electrical Connections

Environmental

Operating Temperature
Storage Temperature
Relative Humidity
Cooling Required

10/100Base-T Ethernet per IEEE 802.3
300, 600, 1200, 2400, 4800, 9600, 19200 baud
250V rms working, 2.3 kV rms per 1 min test
Modbus TCP, Modbus RTU, Modbus ASCII, Laurel ASCII
Modbus over Serial Line Specification V1.0 (2002)
247 for Modbus, 31 for Laurel ASCII

4-20 mA, 0-20 mA, 0-10 Vdc (selectable)
10V ( 0-500Ω load )
2 mA ( 5 kΩ load )
16 bits (65,536 steps)

0.02% of output span
Determined by input data rate
250V rms working, 2.3 kV rms per 1 minute test

Two solid state relays, SPST, normally open, Form A
120 mA at 140 Vac or 180 Vdc

85-264 Vac or 90-300 Vdc (DC operation not ETL certified)
10-48 Vdc or 12-32 Vac
DC or 47-63 Hz
250V rms working, 2.3 kV rms per 1 min test
2W typical, 3W with max excitation output

129 x 104 x 22.5 mm case
35 mm rail per DIN EN 50022
Plug-in screw-clamp connectors

0°C to 55°C

-40°C to 85°C
95% at 40°C, non-condensing
Mount transmitters with ventilation holes at top and bottom.
Leave 6 mm (1/4") between transmitters, or force air with a fan.

LAUREL

ELECTRONICS INC., 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel [phone] • www.laurels.com 2