The error message LDRG refers to load cell over range.  There are 4 possible scenarios that could be causing the error.

1) The local overload setting on the controller is being tripped.

2) The load cell is offset/damaged

3) The calibration settings for that particular load are setup incorrectly or corrupted.

The errors you would see are LDRG-JOGDN or JGUP.  JOGDN stands for jog down arrow and JOGUP stands for jog up arrow.  If no force is being applied move to next step.  If load is being applied follow the Jog up or jog down until load is released, does the error message go away.  If not move to next steps.

1) The local overload setting is under the 'data acq.' menu, option 5 local overload.  Press 5 and it will take you into the setting.  The setting should be a none zero.  Ideally set about 10% above expected peak forces of your test or capacity of the load cell.  If not set properly, enter the correct number and press the enter (green button) on the controller.  Press the 'esc' button (red) to exit the menu.  If the error message is still present, move to next step.

2) To check for possible offset/damage of the load cell, first remove the fixturing attached to the bottom of the load cell so nothing is hanging from it.  Go to the 'utilities' menu on the controller and press option 6 for 'Diagnostics'.  In the next window check what the value to the right of 'Ch0' is showing.  The number will fluctuate so take average.  The reading should be in the hundreds.  If in the thousands, ten thousands or one hundred thousands the load cell may be offset/damage and either further evaluation is needed to confirm or the load cell should be replaced.  If the counts are in the hundreds but you are still getting the error message then move to next step.

3) Next would be to check if the calibration was done correctly and/or if the calibration settings are corrupted and have to be manually reloaded.  If you have the Xy software you can connect the controller to Xy and then press the 'print' button on the controller keypad.  Next press option 4 for 'Calibration - Host'.  The calibration data on the controller will print over to Xy software and move the software to 'calibration view' tab.  It will default to the sub tab 'load' on the right hand side will be a table of 'counts' and 'values'.  The first line the value should be zero.  If its not zero, then the calibration setup was done incorrectly.  The first point taking in the calibration process is zero point.  Proceed with steps in section 7 of manual to properly setup calibration settings.  If it is done correctly then likely the calibration is corrupted and should be manually entered in again.  Follow the sets below.

1) With the controller on and at the main screen, remove any fixtures from the bottom of the load cell if not already.

2) Press 'utilities' button and then press 7 for 'transducer'.  Press 1) for calibrate.  Password is 268

3) Press 1 for load

4) First screen will ask for load cell number.  If you have more then one load cell, check physical calibration document to determine which load cell number.  If you only have the one load cell it will be zero.

5) Next it will ask the range of load cell, Enter capacity range in the units the setting is showing, press enter

6) Next you'll enter resolution. Type in 0.01 and press enter

7) Next you'll enter in serial number of load cell.  You can confirm what comes up matches the serial number on the load cell itself.  If correct press enter, if not, enter in correct serial number and press enter.

8) Next it will take you to the calibration set-up.  Press enter to take first point which will be zero load.  The next screen will come up and look identical as the first.

9) Next press the 1) button to toggle 'shunt - off' to 'shunt-on' and then press the enter key.

10).  Same screen will appear, this time press the 'store' button.

11).  In next window, enter in zero as the value and press enter.

12.) In the next window, enter in cal factor or shunt value on the last calibration certificate you have and press enter key.

It will say calibration is successful and bring you back to the calibration menu.  Press 'esc' button until you get back to the main screen.

If you are still getting the message, best to inform support contact to setup return of item for evaluation.