QA-OMNI

Single Channel Signal Converter to Modbus
  • Features
    • 4-20 mA, 0-10 Vdc to Modbus
    • Thermocouple, RTD to Modbus
    • Resistance, Potentiometer to Modbus
    • Digital to Modbus
    • Datalogger
    • DIP Switch Programmable
    • PC Programmable
    • 4-20 mA, 0-10 V Output
    • DIN Rail Mount








Single Channel Signal Converter to Modbus

single-channel signal conditioner with Modbus RTU output with datalogger infographic.

The QA-OMNI is a single-channel signal conditioner with Modbus RTU output with datalogger features. It accepts both analog and digital inputs and outputs. The analog input can be Current, Voltage, Thermocouple, RTD, Resistance, and Potentiometers. The digital input can be either NPN, PNP, 24 V TTL, contact, Hall effect sensor, up to 9.999 kHz. The analog output is either mA or Voltage, and the digital output is SPDT relay with a contact rating up to 250 Vac 5 Amp. The input and output and the Modbus RTU port and power supply are galvanically isolated at 1.5 kV.
The single-channel Modbus converter is set up with Java software available to download from www.qeedusa.com, and configuration is done via the Modbus port the USB slot on the front or with the DIP switches.

QA-OMNI Specifications

Analog Input Current 4-20 mA, 0-20 mA Voltage 0-10 Volts
Analog Input Thermocouples J, K, R, S, T, B and E
Analog Input RTD's Pt100, Pt500, Pt1000, Ni100. 2, 3 or 4 wire
Analog Input Potentiometer 1 kohm and 10 kohm
Analog Input Resistance 400 Ohm and 4 kohm 2, 3 or 4 wire
Analog Output Current 4-20 mA, 0-20 mA Voltage 0-10 Volts
Digital Output SPDT Relay Max 250 Vac 5 Amps
Power Supply 10 to 40 Vdc 20 to 28 VAC
Current Consumption Max 2 VA
Temperature Rating Operative 5°F +149°F - 15°C +65°C Storage Temperature - 40°F +185°F - 40°C +85°C.
Humidity (non condensing) 10-90%
Housing Material self-extinguishing
Dimensions 0.69" x 3.93 " x 4.4" 17.5 x 100 x 112 mm
Weight 3 oz 90 g
EMC Immunity: EN 61000-6-2. Emission: EN 61000-6-4.
Configuration DIP Switch Configurable PC Configurable

QA-OMNI Wiring Connections

Power Supply
Positive Terminal 16
Negative Terminal 17
Analog Input
Voltage Positive Terminal 1
Voltage Negative Terminal 3
mA Input Positive Terminal 2
mA Input Negative Terminal 3
Thermocouple Positive Terminal 4
Thermocouple Negative Terminal 3
2 Wire RTD Terminal 3 and 6
3 Wire RTD Terminal 3, 6 Com 4
4 Wire RTD Terminal 3, 6 Com 4, 5
Potentiometer Terminal 3 and 6 wiper 4
Resistance Terminal2 and 10
Digital Input
Reed Relay, NPN Namur Terminal 7 and 9
PNP, 12v Photoelectric Sensor, Hall Positive Terminal 10
Negative Terminal 7
Switch Terminal 8
24 Vin TTL Positive Terminal 10
Negative Terminal 7
Switch Terminal 8
NPN 12 V Positive Terminal 10
Negative Terminal 7
Switch Terminal 9
Variable reluctance Terminal 8 and 9
Analog Output
Voltage Positive Terminal 29
Voltage Negative Terminal 31
mA Active Output Positive Terminal 29
mA Active Output Negative Terminal 30
mA Passive Output Positive Terminal 30
mA Passive Output Negative Terminal 31
Relay Output
Normally Open Terminal 27
Common Terminal 26
Normally Closed Terminal 25
Modbus Output
Modbus Ground Terminal 32
Modbus Positive Terminal 34
Modbus Negative Terminal 33
single-channel signal conditioner with Modbus RTU wiring diagram
QEED USA
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Contact Information
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