ACU-RITE VRO 300M - Manual (Page 70)

VRO 300M Troubleshooting
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If the system seems to be displaying incorrect positions, check the following
items.
•
Verify presets. Make sure the numbers that you entered are correct.
•
Verify tool. Check that the correct tool is being used. Make sure the
correct tool offset has been entered. Check the tool 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.
Errors
The readout includes built-in test and error-checking circuitry. This circuitry
identifies errors that occur, and reports the problem to the operator.
Loss of power is indicated by the “Power was off” message. Loss of power
means that power to the readout has been interrupted. Since power to the
encoders has also been interrupted, position information may no longer be
accurate. Press the
CLEAR key to clear the error message. Refer to page 7 for
information about position recovery.
Counting errors are indicated by the “Scale miscount” message, telling you in
which axis the miscount occurred. Counting errors result from distorted
electrical signals from an encoder. These signals can be a result of an encoder
malfunction, misalignment, mounting problems, or electrical interference.
Press the
CLEAR key to clear the error message. Follow these steps to determine
if your difficulties are associated with the readout or with the encoder.
• Ensure that the linear encoder connectors are correctly seated.
• Swap linear encoder cables at the readout to see if the problem still
appears in the same display.
• If the problem remains in the same display, the readout is in error.
• If the problem follows the connection change, the linear encoder may be
in error. Refer to the Checking the Linear Encoders section of your encoder
reference manual.
Display overflow errors are indicated by a blank axis display. A numeric
overflow occurs when the intended measurement is too large for the eight-
digit display. Clear the error by returning the machine table into an area
where measurements can again be displayed, setting a new preset, or zeroing
the display.