Go to the DEBUG page. Turn servos off by pressing [EMERGENCY STOP].
Look at the Z-channel travel display (left side of screen in the middle). The X:xxxx will be used to adjust tension of scale tape. This number is in units of µm.
Remove the cover plate and plastic plug. Under the cover plate is the tape tension locking screw. This must be loosened. There is a tension adjusting screw in the end of the scale, use a hex key on the screw to reduce tension on the scale.
As tension is reduced, the X-axis value on the Z-channel Travel Display page will change as well. Continue reducing the tension until the value stops changing. At this point the tape is fully relaxed.
Add the value of V, calculated in step 3, to the X-axis value found on the Z-channel Travel display page. For example, if X-axis = 8756 then add 567 µm from the example (your number will be different) and obtain Xaxis= 9323.
Turn the tensioning screw at the end of scale extrusion and begin tensioning the scale tape while monitoring the value of X-axis on the Z-channel Travel Display page. Continue to tension the tape until the value of Xaxis matches the calculated value. Sample tests indicate that about 17 revolutions are needed.
Once the correct value of X-axis is achieved, tighten the tension locking screw. Check to insure the X-axis value did not change. If it did change, loosen the lock screw and readjust tension until correct value is reached.