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OMX 390LVDT

FAST ISOLATED TRANSMITTER • LVDT > U/I

The OMX 390 model series are very fast DIN rail mountable digital transmitters with a Teach-in function.
Type OMX 390LVDT is a transmitter for LVDT sensors. Setting of both the input and output ranges can be done conveniently by a DIP switch located on the side of the housing or from a PC via the OM Link SW. This device is based on a 32-bit processor, dual 24-bit ∆Σ ADC with PGA, demodulato, wake-up signal generator and 16-bit DAC, which guarantees high accuracy and excellent stability.

Power supply of LVDT sensor 1 / 3 / 5 Vac
3- / 4- / 5- / 6-wire connection
Teach-in, Digital filters, Tare, Linearization
Quick configuration by DIP switch
PC configurable via USB port
Galvanic separation 2.5 kVAC
Power supply 10…30 VDC/24 VAC

Input

LVDT

Range

1/3/5 VAC with frequency of 2.5/5/10 kHz

Wiring

3, 4, 5 nebo 6drátové

Settings

Control

Přístroj se ovládá a nastavuje dvěna tlačítky na předním panelu a DIP přepínačem na boku krabičky

Optional functions

TARE	Activating function Tare
NUL. TA.	Tare reset
Teach-in	setting the analog input range

OM Link

Company communication interface for operation, setting and update of device firmware (microUSB)
OM Link program is also designed for visualization and filing of meas. values from more instruments

Instrument accuracy and functionality

Temperature coefficient

15 ppm/°C

Accuracy

±0,1 % of range

Rate

1…100 measur./s

Overload capacity

2x; 10x (t < 30 ms)

Linearization

lineární interpolací v 100 bodech (pouze přes OM Link)

Digital filters

arithmetic mean	from 2…100 measurements
floating mean	from 2…30 measurements
exponential mean	from 2…100 measurements
rounding	setting projection step for display

Functions

Tare	designed to reset display on non-zero input signal
Offset	kompenzace rozdílu mezi měřenou a skutečnou/požadovanou hodnotou
Min/max value	registration of min./max. value achieved during measurement
Teach-in	semiautomatic regime of input calibration
Simulace	simulace vstupního signálu/funkce přístroje
Odložený start	čas kdy se neprovádí měření po připojení přístroje k napájení

Math. functions

polynom, invertní polynom, 1/x, logarithm, exponential, power, root

Watch-dog

reset after 500 ms

Calibration

at 25°C and 40 % r.h.

Analogue outputs

Number of outputs

1 output

Type

Isolated, programmable with a 16-bit D / A converter, type and range are menu selectable

Temperature coefficient

15 ppm/°C

Accuray

±0,02 % full scale
±0,03 % full scale (0…5 V)
±0,05 % full scale (0…2 V / 0…5 mA)

Rate

response to value change < 160 µs

Ranges

0…2 / 5 / 10 V, ±10 V, resistive load > 1 k?
0…5 / 20 mA / 4…20 mA, comp. < 600 Ohm / V

Error state

error message indication (<3.0 mA)

Data outputs

Number of outputs

1 outputs

Type

RS 485, isolated
10/100BaseT, Modbus TCP/IP (Slave)

Protocol

MODBUS - RTU, MODBUS - TCP/IP

Data format

Format	8bit + parity + stop bit
Parity	none / even / odd
Stop bit	1 / 1.5 / 2

Rate

600…230 400 Baud
10 Mbit/s, 100 Mbit/s

RS 485

isolated, addressing max. 31 instruments

Address

MODBUS

< 246 instruments

Line termination

by internal resistor 120 Ohm

Power supply

10…30 VDC/24 VAC, ±10 %, PF > 0,4, I < 45 A/1 ms, isolated

Current draw

< 3,5 W/3,9 VA

Power supply protection

Power supply is protected by a fuse inside the instrument

Mechanical properties

Dimensions

25 x 79 x 90 mm (w x h x d)

Material

PA 66, non-inflammable UL 94 V-0 (black)

Installation

DIN rail, width 35 mm

Operating conditions

Connection

connector terminal board, cable section < 1,5 mm2

Stabilization period

within 5 minutes after switch on

Operating temperature

-20°…60°C

Storage temperature

-20°…85°C

Operating humidity

< 95 % r.v., nekondenzující

Protection class

IP20

El. safety

EN 61010-1, A2

Dielectric strength

2,5 kVAC within 1 min. between pow. supply and input
2,5 kVAC po 1 min. mezi vstupem a výstupem

Insulation resistance

for polution degree II, measuring cat. III.

napájení přístroje	300 V (ZI), 255 V (DI)
input, output	300 V (ZI)*

EMC

EN 61326-1

RoHS

IEC 63000 : 2018

Seismic capacity

IEC/IEEE 60980-344 ed. 1.0:2020, par 6,9

Mechanical durability

EN 60068-2-6 ed. 2:2008

Images

Connection

Dimensions and installation

Datasheets

File name	File type	Version	Language	Download
Datasheet OMX390LVDT Katalogový list OMX390LVDT	PDF	2026.2		Download

User manuals

File name	File type	Version	Download
Operating instructions OMX390LVDT_AO Návod OMX390LVDT_AO	PDF	2024.1.02	Download
Operating instructions OMX390LVDT_RS Návod OMX390LVDT_RS	PDF	2024.1.02	Download
Operating instructions OMX390LVDT_ETH Návod OMX390LVDT_ETH	PDF	2024.1.02	Download

Application notes

File name	File type	Version	Language	Download
Application note External inputs Aplikační list Externí vstupy	PDF	2024.1		Download

Certificates

File name	File type	Version	Download
Certificate EU_Declaration_OMX390 Certifikát EU_Prohlášení_OMX390	PDF	2024	Download
Certificate Declaration_17050_OMX390 Certifikát Prohlaseni_17050_OMX390	PDF	2024	Download
Certificate Seismic_test_OMX390 Certifikát Seizmicka_zkouzka_OMX390	PDF	2024	Download