Kaman KDM-8200 - Manual (Page 41)

41
Kaman Precision Products
Appendix C: Troubleshooting
Checklist for
This troubleshooting section addresses the problems that commonly arise out of
Basic misapplication of procedures in this manual, simple oversight, or changing environmental
Troubleshooting conditions. Understanding of the material outlined in this manual and a common-sense
approach to system use will preclude most of the problems listed below from happening.
Approximately 98% of potential difficulties can be prevented or eliminated by going over
the following checklist:
If you have absolutely no output from your system, there is a good chance that there
is no power supply voltage.
•
Check your power supply for ± 15 VDC. If you have provided your own power
supply, make sure it is capable of supplying the minimum current to operate the system.
•
Check loose plugs.
•
Make sure the power switch is on.
•
Check for a malfunctioning display unit.
•
Ensure the system is plugged in the proper power outlet (110/240).
After ensuring that you have a correct and reliable power feed:
•
Check the security of connectors.
Incorrect calibration procedures can cause problems:
Follow the calibration procedures in this manual closely.
•
A calibration span that is too large or too small, incorrect offset, or gross
misadjustments of the calibration controls can cause drift, erroneous output, or make it
impossible to calibrate.
•
Extremely high or low sensitivity/gain can cause drift and make the system
overly sensitive to temperature variations, target size, etc.
Problems with sensor mounting and nonrepeatable fixturing can be sources of
trouble:
•
Make sure your calibration fixture is sound and repeatable.
•
When you move the sensor from the calibration fixture to the application fixture,
maintain the offset.
•
Make every effort to provide a thermally stable environment to prevent drift.
(Kaman can provide temperature compensation, but your best choice is to control the
environment if possible).
Inappropriate target materials can also lead to difficulty using the system:
•
When you calibrate, use actual target materials in the same sizes.
•
Whenever possible use the actual application environment or simulate it as
closely as possible.
Do not make any arbitrary changes in sensor/cable and measurement module
combinations