Omron D40A-G9SX-NS Brochure page 2

Solves Conventional Switch Issues to Provide Stable Detection
The Switch does not accurately detect the door when it is closed slowly, resulting in an error.
Issue 1
Conventional switch
Solution 1
Conventional Switches
Slow
Magnet
Reed switch contacts
Reed switch contacts
It is nearly impossible to tell which door is open in a multi-door application.
Issue 2
Solution 2
If the switching timing of reed
Magnet
switch contacts 1 and 2 varies
too much, the Controller
detects an error and turns OFF
the output to maintain safety.
Note: The figure is intended
only as an illustration.
Error Error
Door
closed
slowly.
The D40A does not use reed switches and
provides stable detection with electronic switches.
Stable Detection
with the D40A's
New System
Detects slow lateral operation.
If an error occurs...
The system cannot be started because the Controller has turned
OFF the output even though all doors appear to be closed.
It's impossible to tell if there is a door open or if an error has occurred.
All doors must be opened and closed before operation can be started.
With the D40A...
The auxiliary outputs can be used to easily indicate which door is
open.
And with two-color indicators, mounting adjustments are also easy.
The D40A is the first Non-contact Door Switch to combine 2-color
indicators, auxiliary outputs, and 30-switch connection capacity,
allowing you to create a better safety environment.
D40A/G9SX-NS
An error can occur
if the door is closed
slowly with
conventional
switches.
Slow
Detects slow rotating operation.
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