QI-50-V-485

Modbus Current Transducer
  • Features
    • Current Converter to Modbus
    • DIP Switch Programmable
    • PC Programmable
    • 0-25 / 0-50 Amp Input
    • 0-10 V Output
    • DIN Rail Mount



What does the QI-50-V-485 do?
Converts AC Current into Modbus.
Converts DC Current into Modbus.
Converts AC Current into 0-10Vdc.
Converts DC Current into 0-10Vdc.

Modbus Current Transducer

Modbus Current Transducer

The QI-50-V-485 is a versatile Modbus current transducer with Modbus and 0-10V DC outputs. It measures the True RMS value of AC or DC current with 12-bit resolution and 0.5% accuracy.
The device supports 0-25A or 0-50A full-scale ranges, selectable via DIP switch, and is also PC programmable for added flexibility.
It features 3000 Vac isolation to eliminate ground loops, making it ideal for industrial environments.
Easily mounted on a DIN rail, its baud rate and address are configurable via DIP switches and PC programming.

QI-50-V-485 Specifications

Input Current 0-25 Amps Current 0-50 Amps
Output Modbus RTU 0-10 Vdc
Power Supply 12 to 35 Vdc
Current Consumption Modbus Output 35 mA Voltage Output 25 mA
Temperature Rating Operative 5°F +149°F - 15°C +65°C Storage Temperature - 40°F +185°F - 40°C +85°C.
Humidity (non condensing) 0-90%
Housing Material self-extinguishing
Dimensions 1.8" x 2.52 " x 1.1" 46 x 63 x 27 mm
Weight 3 oz 90 g
EMC Immunity: EN 61000-6-2. Emission: EN 61000-6-4.
Configuration DIP Switch Configurable PC Configurable

QI-50-V-485 Wiring Connections

Power Supply
Positive Pin 5
Negative Pin 1
Modbus Output
Modbus Positive Pin 3
Modbus Negative Pin 4
Voltage Output
Voltage Positive Pin 2
Voltage Negative Pin 1
Modbus Current Transducer QI-50-V-485
How to connect to a Modbus Current Transducer and configure it to measure current.
Printed Version
Set up the QI-50-V-485
  • Change switch 4 to on and the remaining switches to off.
  • Only now, connect 24 Vdc to Power terminal 5 and GND to Terminal 1.
  • Connect RS485 to Terminal 3 and 4.
  • Download the Java software file from our web site.
  • VERY IMPORTANT UPDATE YOUR Java software ON YOUR PC. OTHERWISE IT WILL NOT WORK.
QI-50-485 photo
The QI-50-V-485 is configured with Java software.
  • Unzip the downloaded software.
  • Click the EXE file.
qi-50-v-485 config software
Start the Current to Modbus RTU Configuration Software.
  • After clicking the EXE file the Current to Modbus RTU configuration Software should open.
  • Click Next to proceed.
how to down load the software
Choose to Connect to the Current to Modbus slave.
  • It is possible to configure the software with or without connecting to the Current to Modbus Converter. As we are configuring the QI-50-V-485, we have connected the PC and the QI-50-V-485 with a RS485. Other buttons available on the software are Go to Start Page. This button returns you to the start page. Back takes you back one page at a time. Quit closes the software.
  • Turn on the power to the QI-50-V-485 Current to Modbus Slave.
  • Click Next to proceed. Click the Connection by RS485 Cable button.
how to connect to a qi-50-v-485
DIP Switch setting.
  • Only switch on DIP Switch 4. This sets up the QI-50-V-485 to Address 1, Baud-rate 2400, Monopolar and 50 Amp range.
  • Make sure the power is on and the LED is on.
  • Click Next.
DIP Switch setting for a QI-50-V-485
Communication Port Setting.
  • The QI-50-V-485 configuration software should automatically choose the correct serial port.
  • The port can be changed and updated.
  • Click the “Start Connection to the device” button.
Setting up the communication ports on a Modbus Current Converter
Configuration of the QI-50-V-485.
  • There are four options here.
  • LOAD CONFIGURATION FROM FILE.
    This can be used if you want to load the Modbus Current transducer settings from the PC.
  • LOAD CONFIGURATION FROM DEVICE.
    This is used if you want to save the settings in the Modbus Current Transducer to the PC.
  • NEW CONFIGURATION FROM DEFAULT PARAMETERS.
    This is used if you want to set the Modbus Current Transducer to the factory defaults or other settings.
  • CONNECTION TO THE DEVICE TO SHOW REAL TIME MEASUREMENTS.
    Click here to read the actual current being measured by the Modbus Current Transducer.
Setting up the communication ports on a Modbus Current Converter
Reading the Current.
  • RMS Current A.
    This is the actual current reading.
  • Output Voltage.
    This is the corresponding voltage output if set to read 0-10V output.
  • Totalizer Ah.
    Totals the Ah.
  • Max Current.
    This is the Maximum Current reading.
  • Min Current.
    This is the Minimum Current reading.
  • The Totalizer and Max/Min Current readings can be reset.
  • The green indication boxes indicate good conditions.
Reading the current output from a Current Transducer
Modbus Settings.
  • Here you can set up the Modbus Communication
  • The Input range
  • Adjust the scale for the output.
  • Reading Average.
  • Change the default filter settings.
  • Adjust the low current indication.
  • Restore the factory default settings.
Changing the Modbus Settings on a QI-50-V-485
QEED USA
Qeed products are sold and maintained by
Datexel LLC in the USA.
Contact Information
☏ 561 779 5660

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