Agilent Technologies BenchBot, Safety And Installation Manual

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3 Installing the BenchBot Robot workstation
About the Light Curtain
56 BenchBot Robot Safety and Installation Guide
About the Light Curtain
About this topic
All safety equipment supplied with the G5486A BenchBot Robot (workstation
configuration) will be installed for you. Changing the installed workstation
might invalidate the safety compliance and lead to personal injury or
equipment damage. For information on how to prepare for the installation, see
“Laboratory setup requirements” on page 11 . If you have questions about the
safety equipment, contact Automation Solutions Technical Support.
This topic explains the function of the Light Curtain and describes how it
works.
Light Curtain description
As part of the safety interlock circuit, the Light Curtain works in a similar
manner to the emergency- stop pendant. Lightposts project and reflect light
beams around the workstation. If an object disrupts the light beams, the safety
interlock circuit stops the robot and devices that are connected to the
BenchBot Disable Hub. Other devices that are not connected to the BenchBot
Disable Hub might continue to move until they have completed the current
tasks.
How the Light Curtain works
The Light Curtain consists of the following:
•
Lightpost . Contains the light transmitter and light receiver components.
In complex workstations, the transmitter and the receiver might be
installed on different lightposts.
•
Mirror posts . Consist of a mirror on one side of the post.
Light is transmitted from one side of the lightpost (
1
) and reflects off of the
mirror posts ( 2 , 3 , and 4 ). The reflected light then returns to the receiver on
another side of the lightpost (
1
).
Figure Lightpost and mirror posts (top view), and the transmission and reflection of light
1
2
3
4