IAI ssel

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Part 1 Installation
7.3.2 Connection Example of External Drive-source Cutoff Circuit and Internal Circuits (Safety Category
1)
A system meeting safety category 1 can be built by providing a drive-source cutoff circuit externally to the
controller.
A
UTO/MANU
switch
TP
connector
System I/O
connector
EMG
switch
ENB
switch
Power
connector
Inside controller
AUTO/MANU
status detection
AUTO:
Closed
MANU:
Open
TP-connector
connection status
detection
Connected:
Open
Not
connected:
Closed
ENB input
detection
EMG input
detection
Status signal
Drive-source
cutoff control
Command signal
Status signal
Drive source
Drive-source
cutoff relay
External 24 V+
External 24 V-