ACU-RITE DRO 200G - Manual (Page 27)

Troubleshooting DRO 200G
20
Incorrect Operation
If system positioning does not seem to be repeatable, the problem could be with
the machine tool or with the readout system.
• Check the machine tool.
Check that the table is not locked. Ensure that the
knee, ram, head bolts, turret-to-column bolts, and head-to-knuckle bolts are
properly secured. Check the gib adjustments. Tram the heads. Check spindle
run-out.
• Check linear encoders.
Check each encoder and reading head for proper
installation. Ensure that the mounting brackets are secure.
If the system seems to be displaying incorrect postions, check the following items.
• Verify presets.
Make sure the numbers you enter are correct.
• Verify tool.
Check that the correct tool or grinding wheel is being used. Check
the tool or grinding wheel for wear.
• Verify the scale factor.
Ensure that the correct scale factor is being used.
• Verify linear error compensation.
Make sure that the factors used for linear
error compensation are correct.
Power-On Self Test
There are four tests performed when power is applied to the readout. You will not
notice these tests unless a problem is found, in which case a message will scroll
across the display.
Keypad—a key was detected stuck down. The message will display what row (x)
and column (y) the stuck key is in:
KEY STUCK – RxCy – PRESS CLEAR
Parameter memory—some of the system setup parameters are not valid. You
may be able to check and reset these settings, but it’s possible they will be lost
again. The readout should be serviced as soon as possible.
MEMORY FAILURE [1] – PRESS CLEAR
! CAUTION
Some working settings are not valid. Proceed with caution.