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

• Datasheet

• Buy Online  

• Configuration Software

• QI-300-V-485

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

The QI-50-V-485 is a Modbus Current transducer that has a Modbus output and a 0-10V DC output. It is designed to detect the True RMS value of the AC or DC current. It is DIP Switch selectable for either 0-25A or 0-50A full scale. The resolution is 12 Bit with an accuracy of 0.5%.
The 3000 Vac isolation between input and power supply/signal output eliminates the effects of all ground loops and allows the use of the converter in heavy environmental conditions found in industrial applications. The current transformer can be mounted on a DIN Rail strip.
The Baud-rate and address can be set by DIP switches.

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

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.

The QI-50-V-485 is configured with Java software.

• Unzip the downloaded software.
• Click the EXE file.

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.

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.

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.

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.

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.

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.

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.