1 Introduction
1.2 System Overview
1-7
175932-1CD
175932-1CD
EcoTrim ET-1024 System
approaches the cell to load a part and breaks the light curtain, the rotary
table will need to be at (and remain at) the “Side A” or “Side B” position.
Once the part has been loaded, the operator steps out of the light curtain,
the “Light Curtain Clear” relay will actuate and bypass the “Side A/B”
requirement. The operator can then press the [Cycle-Start] button on the
operator station which will either latch (if the robot is actively processing a
part on the other side of the table) or will initiate table movement from the
executing “INFORM” job to sweep the table 180 degrees to allow the
operator to unload the processed part while presenting the robot with the
unprocessed part. Once the table has swept into position, the operator
can safely enter the light curtain to remove the processed part and begin
installation of a new part into the fixture. Assuming there are no faults or
issues during the production of the part, once completed, the robot will
return to a safe position. After the next part has been loaded and the
[Cycle Start] button pressed/latched the “INFORM” job will sweep the table
from side-to-side so the operator can unload the processed part. When a
new part has been loaded, the process begins again.
1.2.3.3 Key Safety Devices
• DX200 controller with MH24 robot and MSR rotary table:
–Dual channel pendant E-Stop
–Dual channel pendant “deadman” switch
–Play/Teach mode switch
–Functional Safety Unit (FSU)
• Safety Gate Interlocks (qty 2):
–Dual channel dry contact outputs
• Cascaded L-Shaped light curtain:
–30 mm object sensitivity
–29 ms response time
–Dual channel output
• Pilz PNOZ-S4 Safety Relay:
–Monitors outputs from light curtains & generates dry-contact
connections for use in the external E-Stop logic
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