LS SERIES SERVICE MANUAL
ISSUE 4.0 FULL CONTROL CONSOLE DIAGNOSTICS 9
20 Move the crosshead to apply the first required load noting that the speed can be varied
during the calibration using the keys shown earlier.
21 When the required load is applied, press the 0 key on the numerical keypad to stop the
machine WITH THE LOAD HELD by the motor servo electronics. Do NOT press the
STOP button because the servo will switch off and the crosshead will fall slightly so the
required load will no longer be applied.
22 Record the load value displayed on the console into the calibration sheet.
22 If the displayed load reading is NOT within specification, enter a calibration point by
pressing the key under CAL POINT to display the Cal Point screen.
True Load XXXXX N
Measured Load XXXXX N
Change Accept Accept
True Tension T+C Cancel
23 The value displayed for the True Load will be automatically set to a rounded load value,
e.g. if the console displays a load of 200.04N, the true load will be set to 200.00N.
If the True Load is not showing the required value, press the key under CHANGE TRUE
then enter the required True Load value.
24 Press the key under ACCEPT TENSION to store the calibration point into the loadcell
EEPROM then redisplay the previous screen.
Note that if the loadcell is NOT going to be subsequently verified in the COMPRESSION
mode, press the key under ACCEPT T+C to calculate then store a calibration point for
both TENSION and COMPRESSION.
25 Press a number key to restart the crosshead in the UP direction and continue the
calibration by applying and recording the required loads up to the full scale value of the
loadcell, entering calibration points as necessary.
26 When the full scale force has been applied, press the key under DIRECTION so that the
display shows DOWN.
27 Move the crosshead to remove all load noting that the speed can be varied during the
calibration using the keys shown earlier.
28 The loadcell can be calibrated in the compression mode by following the same procedure
except that CAL COMPRES'N is displayed above the 3rd key.
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