External Device Monitoring (Edm); 2-10-1.Overview - Omron F3SG-2RE0430P30 User Manual

System Operation and Functions

2-10. External Device Monitoring (EDM)

F3SG-RA Series
F3SG-RE Series
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.
PNP/NPN
PNP
NPN
The External Device Monitoring is not available for the F3SG-RE.
<Basic wiring diagram>
+24 VDC
Power supply
0 VDC
S1: Lockout/Interlock
KM1, KM2: External device
* Also used as EDM input line
F3SG-R
40
User's Manual
X
Voltage
Vs-3 V to Vs
0 V to 3 V
PNP output
F39-JG A-D
S1
KM1
KM2
Reset Switch
NPN output
F39-JG A-D
S1
+24 VDC
KM1
Power supply
KM2
0 VDC