"Bottom sense failed" error from HDX-2 Chronos - WKB22222

SYMPTOMS

• Error during HDX-2 run: "Bottom sense failed: Bottom not detected within search distance:"
• 

ENVIRONMENT

• HDX-2
• PAL3 RTC
• Chronos
• MassLynx

CAUSE

The PAL3 has a limited search distance on the vials. This error is usually seen when the teaching point of the tray is too high above the surface of the tray, making it search too far before finding the bottom.

FIX or WORKAROUND

1. Reteach the Z height of the tray (all three positions) so there is only 1 or 2 mm above the cover.

ADDITIONAL INFORMATION