DI-400U Quick Start User Guide

Overview

The DI-400U consists of four independent load cell interface units, each acquiring and outputting data independently. Any 4 wire load cell is supported. The four channels are identified as Sensor 1, 2, 3 and 4. These identifiers are also burned internally into each of the four units. The LoadVUE LV-4000 software can be used to read the values from the 4 channels. A calibration program is also included to facilitate calibration of the load cells.

If you have purchased load cells along with DI-400U, the load cells are pre-calibrated to the DI-400U at the factory before shipping.

Connecting the load cells

Attach the load cell(s) to the terminal block of each channel, connecting the four wires Excitation +, Excitation -, Signal +, and Signal - to the terminal blocks leads indicated. If a shield wire is available, it can also be connected to the pin marked 'Shield'.

Software Setup

The DI-400U works best with the four-channel LoadVUE Pro LV-4000 software. This version of our LoadVUE software family can read and display up to 4 channels as well as the total and peak and low of the total. In addition, logging and plotting features are also available, along with alarm, email and SMS features. Simply insert the CD and run the setup program. Please refer to the LoadVUE User Guide on our web site for operation of the software.

Calibration of the sensors

If you have purchased load cells along with DI-400U, the load cells are pre-calibrated to the DI-400U at the factory before shipping.

Simply install the software, connect the DI-400U to your computer and you should be able to obtain valid readings by running the software.

• Run the calibration program provided on the LoadVUE CD. The program can also be downloaded from http://www.loadstarsensors.com/assets/util/CalibrateFcm.zip. Extract the zip files to a separate folder and run CalibrateFcm.Exe
• Each channel is assigned a unique port number. Select a port number from the drop down menu. The internal channel number will be read and displayed under the ID field. (Do not change this ID - otherwise there may be confusion as to which port number belongs to which channel)
  
  

• Note down the channel number in the ID field. (1, 2, 3 or 4). The appropriate load cell can now be calibrated.
• The load cell can be calibrated in 2 ways. If you have the mV/V number from the manufacturer this number can be entered directly. Otherwise you can apply an exact known weight and calibrate the load cell.
• Select a calibration method, mV/V or 2-point calibration.
• Enter the load cell capacity and units. For example 10 kg or 20 lb.
• If you have selected mV/V calibration just enter that number and click Burn Calibration.
• If you have selected 2-Point calibration, read the values at no load (zero load) and then at a specified load by clicking the Read button. Then click Burn Calibration
• Remove the loads. Click Tare to zero the load cell and then click Start to start reading the load cell. Apply different weights and verify.
• Once all the channels are calibrated, run LoadVUE-4000 or SensorVUE or ControlVUE software to read, log, plot the data and/or control external devices.