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Transmitters, 4-20 mA & Modbus - Panel Meters - Counters - Timers - Ethernet - USB - RS485 - RS232

LTS RS232/485 Serial-to-Analog Converter DIN Rail Transmitter

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

Serial to analog transmitter

Features

  • Converts an RS232 or RS485 input to an isolated, scaled 4-20 mA, 0-10 mA, 0-10V or -10V to +10V analog output
  • Supports Modbus RTU, Modbus ASCII, or Laurel ASCII protocols
  • RS485 serial data can be half or full duplex
  • Able to retrieve data from long character strings
  • Serial data rates from 300 to 19,200 bps
  • Analog output resolution 0.0015% of span (16 bits), accuracy ±0.02% of span
  • Dual 120 mA solid state relays can respond to readings or to control characters
  • Universal 85-264 Vac / 90-300 Vdc or 10-48 Vdc / 12-32 Vac power
  • DIN rail mount housing only 22.5 mm wide, detachable screw-clamp connectors
Description
LTS6 serial to analog transmitter

The LTS serial data input, analog output transmitter accepts RS232 or RS485 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, 0-10V or -10V to +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 LTS6 include:

  • Serial data input, RS232 or RS485. The data to be converted to analog can be specified using the Modbus or Laurel ASCII protocol at data rates to 19200 bps. Modbus implementation is fully compliant with Modbus over Serial Line Specification V1.0 (2002) in RTU or ASCII, half-duplex or full-duplex operation, with up to 247 digital addresses. Using the Laurel ASCII protocol, the unit is able to retrieve digital data from long character 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.
  • 4-20 mA, 0-20 mA, 0-10V or -10V to +10V analog transmitter output, isolated, jumper-selectable and user scalable. All selections provide 16-bit (0.0015%) resolution of output span and 0.02% output accuracy of readings from -99,999 to +99,999 counts. Output isolation from signal and power grounds eliminates potential ground loops.
  • Dual solid state relays for control or alarm, isolated. Rated 120 mA at 140 Vac or 180 Vdc. The relays can respond to digital readings or to received control characters.
  • Universal AC power, 85-264 Vac, or low voltage power, 10-48 Vdc or 12-32 Vac.

Easy Transmitter programming is via Laurel's Instrument Setup Software, which runs on a PC under MS Windows. This software can be downloaded from this website at no charge. The required cable from the transmitters to a PC com port is available from Laurel (P/N CBL04).

Specifications
Laureate LTS Serial Input, Analog Output, DIN Rail Transmitter
Serial Data Input (standard)
Signal Types RS232 or RS485 (half or full duplex), jumper selectable
Data Rates 300, 600, 1200, 2400, 4800, 9600, 19200 baud
Output Isolation 250V rms working, 2.3 kV rms per 1 min test
Serial Protocols Modbus RTU, Modbus ASCII, Laurel ASCII
Modbus Compliance Modbus over Serial Line Specification V1.0 (2002)
RS232/485 Connector Screw terminals for easy daisy chaining
Digital Addresses 247 for Modbus, 31 for Laurel ASCII
Analog Output (standard)
Output Levels 4-20 mA, 0-20 mA, 0-10 Vdc, -10V to +10V (user selectable)
Compliance at 20 mA 10V (0-500Ω load)
Compliance at 10V 2 mA (5 kΩ or higher 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
Pinout for Laureate LTS serial-to-analog transmitter
Ordering Guide
Laureate LTS RS232/RS485 Serial Input, Analog Output DIN Rail Transmitter
Click on the radio buttons to build a model number with pricing as shown below. Prices are in US dollars and do not include shipping or duty charges (export sales). Please see our explanations and limitations applicable to pricing and online orders. Prices shown are in US Dollars and are Laurel's manufacturer's suggested retail price (MSRP) in the USA. Orders are processed manually, not directly by our shopping cart system. You don't have to supply credit card information when placing an online order.

North American Orders. Laurel does not sell factory-direct in the USA or Canada. Online sales orders are filled through distribution. During the ordering process, you will have the chance to select an authorized Laurel distributor, or you can ask Laurel to refer you to a distributor. The distributor will then contact you to quote shipping, tax and duty (where applicable), and arrange for payment.

International Orders. If your ship-to address indicates that you are outside of the USA or Canada and Laurel has a distributor in your country, we will forward your order to that distributor for follow-up. If Laurel does not have a distributor in your country, we will email you an order acknowledgment and a pro forma invoice which states the product price, shipping charges, and wire transfer information, which includes a $25 bank wire transfer fee.

Questions about your order? Please email your distributor or sales@laurels.com
Configured model number LTS60
Configured price per model $175
Quantity 1
Extended price $175
Quantity
Transmitter Type LTS6  RS232/RS485 in, 4-20 mA out $175
LTSE6  Ethernet in, 4-20 mA out $235
Power 0  85-264 Vac or 90-300 Vdc $0
1  Isolated 12-32 Vac or 10-48 Vdc $30
Accessories CBL04  RS232 cable, 7ft. Connects RS232 screw terminals of LT transmitter to DB9 port of PC. $19
CBL02  USB to RS232 adapter cable. Combination of CBL02 and CBL04 connects transmitter RS232 terminals to PC USB port. $39
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