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Setup & Operation 11. Stand-alone Option for RC520
Example 2: External safety relay typical application
Emergency
Stop switches
of an operating
unit
Emergency
Stop
detection
Emergency
Stop
detection
Emergency
Stop
condition
control
Safety
Door
detection
112
Emergency Connector Board
Safety Door input1
Safety Door input 2
Latch Release input
Latch Release input
Close: latch off
Open: latch on
External+24V
Fuse*
External
+24VGND
External
+24V
External safety relay
(The above diagram
is simplified for
representation.)
*For the protection
of the emergency
stop circuit, the fuse's
capacity should be as
follows:
• Meet the capacity
of the external
safety relay
• 1A or less
External +24VGND
External +24V
External +24VGND
RC520 Rev.7
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