Appendix “c” - troubleshooting guide – Red Lion GEMINI 2 User Manual
Page 44
APPENDIX “C” - TROUBLESHOOTING GUIDE
The majority of difficulties arising with the Gemini 2000 are related to incorrect power hook-up and programming set-up.
Always check all connections, function codes, Scale Factor, and presets as a first step in troubleshooting.
Before applying power, double check all wiring. Improper AC voltage or AC connections may result in permanent damage
to the unit.
For further technical assistance, contact technical support at the numbers listed on the back cover of the instruction manual.
–42–
PROBLEM
POSSIBLE CAUSE
REMEDIES
NO DISPLAY
1. Power off, improperly connected, or power
1. Check all wiring, verify power.
brown-out.
P ON DISPLAY
1. Data error on power-up.
1a. Press “E” key.
b. Check all function codes.
E ON THE DISPLAY
1. Data error detected by processor.
1a. Press “E” key.
b. Check all function codes.
c. Check signal lines for possible noise sources.
RIGHT HAND DIGITS LOCKED TO ZERO
1. Right-hand zeros programmed.
1. Check function code 61 for dummy “0”
program.
NO RESPONSE TO FRONT PANEL
1. Panel disabled.
1. Consult manual on “Operator Accessible
Functions” modes.
UNIT DOES NOT COUNT
1. No input.
1. Check sensors/connections.
2. Input selected incorrectly.
2. Check rear panel DIP switches.
3. Wrong Personality.
3. Check function code 41 for counter mode.
4. Count Inhibit.
4. Check function code 43. If set for 1, when
Input B is low, count is inhibited.
5. If in Rate Mode, sample time not complete.
5. Allow sample time to complete
6. Scale Factor / Multiplier too small.
6. Check scale factor value and scale multiplier
values.