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QEED Universal Signal Converter

QA-OMNI Advanced Universal Signal Converter

The QEED QA-OMNI is an advanced universal signal converter for current, voltage, frequency, potentiometer and temperature inputs. It supports RTD and thermocouple measurement, programmable analogue retransmission, relay alarm output, RS485 Modbus RTU communication and USB datalogging.

It is designed for industrial automation, process monitoring, BMS, EMS, SCADA, PLC, machine panels and IoT applications where different field signals must be converted, isolated, logged and transmitted to a supervisory system.

Universal Input Current, voltage, frequency, RTD, TC and potentiometer

Outputs 0 20mA, 0 10V, relay and RS485

Isolation 4-way galvanic isolation

Datalogging USB pen drive logging with RTC

Overview

QA-OMNI is suitable when a project has multiple possible signal types and a flexible universal converter is required. One module can be configured for voltage, current, temperature, potentiometer, resistance or frequency signals, reducing the need to keep different converter models for different applications.

The device provides analogue retransmission, digital Modbus RTU data and a programmable alarm contact. It can also perform USB datalogging with timestamped data, making it useful for commissioning, troubleshooting, temporary measurement and permanent monitoring.

Positioning: Universal signal converter with 4-way isolation, analogue output, relay alarm, RS485 Modbus and USB datalogging for industrial monitoring and automation.

Key Features

Universal Signal Input

Supports current, voltage, frequency, potentiometer, RTD and thermocouple input types.

Programmable Analogue Output

Provides configurable 0 20mA or 0 10V output for retransmission to PLC, BMS or EMS.

Relay Alarm Output

5A SPDT relay contact can be configured for alarm or threshold output.

RS485 Modbus RTU

Communicates as a Modbus RTU slave through terminals or optional base module connection.

USB Datalogging

Logs data through USB On-The-Go with a pen drive, with RTC timestamping.

DIN Rail Mounting

Compact 17.5mm module for control panels, automation panels and monitoring enclosures.

Supported Inputs

Input Type	Supported Signal	Notes
Voltage	Programmable up to 10Vdc	100kΩ input impedance, 1mV resolution
Current	Programmable up to 20mA	20Ω input impedance, max resolution 2礎
RTD	Pt100, Pt500, Pt1000, Ni100	2, 3 or 4 wire measurement with automatic cable interruption detection
Thermocouple	Types J, K, R, S, T, B, E, N	Automatic cable interruption detection, -10mV to 70mV range
Potentiometer	1000Ω to 10kΩ	Suitable for position and resistance-based measurement
Frequency	0.001Hz to 9.99kHz	Mechanical contact, NPN, PNP, NAMUR, photoelectric, Hall sensor, variable reluctance, 24V pulse and TTL

Output Functions

Output	Specification	Typical Use
Current Output	0 20mA programmable, maximum load resistance 600Ω	Retransmission to PLC, controller, BMS, EMS or recorder
Voltage Output	0 10V programmable, minimum load resistance 2kΩ	Retransmission to analogue input systems
Contact Alarm	5A / 230Vac SPDT relay, fully programmable by FACILE QA-OMNI	Alarm, threshold output or control interlock
RS485 Modbus	RS485 Modbus RTU slave on terminals or optional base adapter	SCADA, PLC, EMS, BMS, IoT gateway and IoTWatt 4.0 integration

4-Way Isolation

QA-OMNI provides 4-way galvanic isolation between the input, analogue / digital output, RS485 / USB communication and power supply. This helps reduce signal noise, ground loop problems and reference potential issues in industrial panels.

Isolation paths: Input, analogue and digital output, RS485 / USB communication and power supply are galvanically isolated at 1.5kV.

Datalogging Function

QA-OMNI includes USB On-The-Go datalogging using a USB pen drive. The integrated RTC real-time clock allows timestamped storage, and recorded files can be downloaded in Excel-importable format for analysis and reporting.

USB thumb drive / pen drive datalogging
Integrated RTC real-time clock
Excel-importable stored data files
Useful for commissioning, troubleshooting and trend capture
Suitable for temporary monitoring and permanent measurement support

Technical Specifications

Parameter	Specification
Power Supply	10 to 40Vdc or 20 to 28Vac, 50/60Hz
Retransmission Output	Isolated analogue output, programmable voltage or impressed current; active or passive output supply
Sensor Power Supply	13Vdc, 30mA max
Absorption	Maximum 2.5VA
Protection Index	IP20
Accuracy	0.1% F.S.
Resolution	16-bit, 15 + sign for thermocouple input
Rejection	50 60Hz
Thermal Stability at 25°C	<100ppm / °C
Working Temperature	-15°C to +65°C
Storage Temperature	-40°C to +85°C
Isolation	Input, analogue / digital output, RS485 / USB and power supply isolated at 1.5kV
Humidity	10% to 90%, non-condensing
Altitude	Up to 2000m a.s.l.
Mounting	DIN rail mounting with removable terminals; optional base connection for RS485 bus and supply
Connections	Removable 5.08mm terminals
CE Standards	EN61000-6-4:2006 + A1:2011; EN61000-6-2:2005; EN61010-1:2010
Dimensions	17.5 x 100 x 112mm, terminals excluded
Datalogger	Non-volatile memory, USB On-The-Go logging with pen drive, Excel-importable file output, integrated RTC
Configuration	FACILE QA-OMNI software via USB or RS485; DIP switch for Modbus address and baud rate

Correction note: The old page referenced FACILE QA-VI in the configuration row. This updated page uses FACILE QA-OMNI because the product is QA-OMNI.

Typical Applications

Universal Signal Conversion

Use one converter for voltage, current, frequency, temperature and potentiometer signals.

PLC / SCADA Integration

Convert and isolate field signals before sending them to PLC or SCADA systems.

BMS and EMS Panels

Use in building and energy management systems for mixed sensor signal integration.

Process Monitoring

Convert temperature, frequency, potentiometer and analogue process signals into standard outputs.

Temporary Logging

Use USB datalogging for commissioning, site investigation and trend capture.

IoTWatt 4.0

Can be integrated via RS485 Modbus or compatible input modules into IoTWatt 4.0 systems.

Configuration

QA-OMNI can be configured using the free FACILE QA-OMNI software through USB or RS485. The software allows configuration of input type, conversion range, span, zero, analogue output, relay alarm, logging and Modbus communication settings.

Select voltage, current, RTD, thermocouple, potentiometer or frequency input
Configure analogue output type and scaling
Set span and zero
Set relay alarm threshold and alarm behaviour
Configure Modbus address and baud rate
Configure USB datalogging interval and data storage
Use DIP switches for basic Modbus address and baud rate settings

Commissioning note: Confirm sensor type, wiring method, input range, output scaling, relay alarm logic and Modbus settings before connecting the converter to a live monitoring or control system.

System Integration

QA-OMNI is suitable for integrating mixed field signals into PLC, SCADA, BMS, EMS, data logger, Modbus gateway and IoTWatt 4.0 systems. Its universal input support reduces the number of separate converter models required in a project.

Use analogue output for direct PLC or controller input
Use relay output for alarm or threshold indication
Use RS485 Modbus RTU for digital monitoring
Use USB datalogging for site trend capture and troubleshooting
Use optional base connection for cleaner multi-module panel wiring

QA-OMNI Supply and Integration

Saturn Pyro supports QEED QA-OMNI universal signal converters for current, voltage, frequency, potentiometer, RTD, thermocouple, signal isolation, analogue retransmission, relay alarm, RS485 Modbus integration, USB datalogging, PLC, SCADA, BMS, EMS and IoTWatt 4.0 projects in Malaysia.

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QA-OMNI Universal Signal Converter