Omron F3SG-RA, User Manual

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40
Chapter
2
Ext
e
rnal De
vice Mo
nitoring
(E
DM
)
F3SG-R
User’s Manual
System Operation and Functions
2-10. External Device Monitoring (EDM)
2-10-1. Overview
This function monitors if external relays (or contactors) operate normally to detect malfunctions, such as
welding, in the external relays. When the N.C. contact of the external relays is open before the safety
outputs switch from OFF to ON, the safety outputs remain in the OFF state. When the N.C. contact is not
open within the allowable delay time after the safety outputs switch from OFF to ON, the F3SG-RA enters
the Lockout state.
Wiring
Perform wiring so that the specified voltage is applied to the RESET input line via the N.C. contact of
the extenal relays. Refer to the table below for the specified voltage.
The external relays or contactors must have the direct opening mechanism or be force-guided ones.
The External Device Monitoring is not available for the F3SG-RE.
<Basic wiring diagram>
F3SG-RA Series X
F3SG-RE Series
PNP/NPN Voltage
PNP Vs-3 V to Vs
NPN 0 V to 3 V
S1: Lockout/Interlock Reset Switch
KM1, KM2: External device
S1 S1
KM1
F39-JG A-D F39-JG A-D
KM2
KM1
KM2
PNP output NPN output
Receiver Receiver
* Also used as EDM input line
Power supply
0 VDC : Blue RESET: Yellow * 24 VDC : Brown 0 VDC : Blue RESET : Yellow * 24 VDC : Brown
0 VDC
+24 VDC
Power supply
0 VDC
+24 VDC