Laurel-electronics LTE: Ethernet & 4-20 mA Output Transmitter for Bedienungsanleitung PDF herunterladen

LAUREL

ELECTRONICS INC., 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel 714-434-6131 • www.laurels.com 1

LAUREL

ELECTRONICS, INC.

Ethernet & 4-20 mA Output Transmitter

for Duty Cycle Input

Standard Features

• Ethernet serial data I/O, Modbus TCP or Laurel ASCII protocol

• 4-20 mA or 0-10V transmitter output, 16 bits, jumper selectable, isolated

• Dual 120 mA solid state relays for alarm or control, isolated

• 5V, 10V or 24V dc transducer excitation output, isolated

• Transmits ON or OFF period as a percentage of total period

• Frequencies from 0.005 Hz to 10 kHz

• Inputs from NPN or PNP proximity switches, contact closures, digital logic,

magnetic pickups down to 12 mV, or AC inputs up to 250 Vac.

• Analog output resolution 0.0015% of span (16 bits), accuracy ±0.02% of span

• 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 Laureate duty cycle transmitter tracks ON or OFF period

as a percentage from 0% to 100% of total period of repetitive

pulse trains. In the illustration, duty cycle is 100 x t/P. The trans-

mitter determines duty cycle by averaging an integral number of

periods over a gate time, which is selectable from 10 ms to

199.99 s. The same signal is applied to Channels A and B. The

unit divides the average pulse width by the period between

pulses and expresses this ratio in percent. A resolution of 1%,

0.1% or 0.01% is selectable. By selecting leading or falling pulse

edges, the ON or OFF duty cycle can be transmitted.

The dual-channel signal conditioner used for pulse detection

accepts inputs from proximity switches with PNP or NPN output,

TTL or CMOS logic, magnetic pickups, contact closures, and AC

signals from 12 mV to 250 Vac. Jumper selections provide opti-

mum operation for different sensor types and noise conditions.

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.

Standard features of Laureate LTE transmitters include:

•

Ethernet I/O, isolated. Supported protocols are Modbus

RTU and ASCII (tunneled via Modbus TCP) and Laurel ASCII.

The latter is simpler than the Modbus protocol and is recom-

mended when all devices are Laureates. Note that RS232 or

RS485 data I/O in lieu of Ethernet is provided by our LT Series

transmitters.

•

4-20 mA, 0-20 mA or 0-10V 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 a reading from -99,999 to +99,999 counts

that is also transmitted digitally. Output isolation from signal

and power grounds eliminates potential ground loop problems.

The supply can drive 20 mA into a 500 ohm (or lower) load for

10V compliance, or 10V into a 5K ohm (or higher) load for

2 mA compliance.

•

Dual solid state relays, isolated. Available for local alarm

or control. Rated 120 mA at 130 Vac or 180 Vdc.

•

Transducer excitation output, isolated. User selectable

5V@100 mA, 10V@120 mA or 24V@50 mA.

•

Universal 85-264 Vac power. Low-voltage 10-48 Vdc or

12-32 Vac power is optional.

1 2 3 4

Inhaltsverzeichnis

Seite 1

LAUREL ELECTRONICS INC., 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel 714-434-6131 • www.laurels.com 1 LAUREL ELECTRONICS, I

Seite 2 - Specifications

LAUREL ELECTRONICS INC., 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel 714-434-6131 • www.laurels.com 2 Specifications Duty Cy

Seite 3 - Application Example

LAUREL ELECTRONICS INC., 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel 714-434-6131 • www.laurels.com 3 Pinout Mechanical Ap

Seite 4 - Ordering Guide

LAUREL ELECTRONICS INC., 3183-G Airway Ave., Costa Mesa, CA 92626, USA • Tel 714-434-6131 • www.laurels.com 4 Ordering Guide Create

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