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Chapter 13: Maintenance and troubleshooting
BenchCel User Guide
Setting
Comment
Rack present
This indicator light is green when a rack is present, and
red when a rack is not present.
To set the Rack sensor threshold , see “Changing
general settings” on page 278.
Plate present
Any number above the Plate in stack sensor
threshold indicates a plate is present. Numbers
under the threshold are displayed red, while numbers
over the threshold are displayed white.
To set the Plate in stack sensor threshold , see
“Changing general settings” on page 278.
Air (PSI)
Displays the air pressure of the selected stacker’s
regulator, in pounds per square inch.
Notches
The far-left plate sensor is called A1 because that
corner is intended for the A1 well of the microplate.
Values that are less than the Sensor threshold
indicate the presence of a notch.
Values that are greater than the Sensor threshold
indicate the absence of a notch.
To set the Sensor threshold or Sensor intensity,
see “Changing general settings” on page 278.
Resolving teachpoint problems
About this topic
Once set properly, you should never need to adjust or redefine a
teachpoint unless you do one of the following:
❑ Move the BenchCel
❑ Change settings on external devices, such as the Z-height on a
VCode
❑ Move one of the external devices accidently
Symptoms of a
teachpoint error
The symptoms of a teachpoint error are the following:
❑ Robot is not placing the plate properly at an external teachpoint
❑ Robot is not picking the plate properly from an external teachpoint
Note: If the robot is not picking or placing a plate properly from an
internal teachpoint (one of the stacks), then you most likely have a
gripper alignment problem and not a teachpoint error.
Before changing the
teachpoint
Before you adjust or redefine a teachpoint, always check to be sure that
the grippers are aligned. See “Checking the arm alignment” on page 309
for a procedure to check the gripper alignment.
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