Omron G9SA Series Manual page 8

G9SA-321-T@ (24 VAC/VDC) + G9SA-EX031-T@ with 2-channel Limit Switch Input/
Manual Reset
Open
TH
SA
S1: Safety Limit Switch
with direct opening mechanism (NC)
(D4B-N, D4N, D4F)
S2: Limit switch (NO)
S3: Reset switch
KM1, KM2,
KM3, and KM4: Magnetic Contactor
M1, M2: 3-phase motor
Timing Chart
Limit switches
S1 and S2
Reset switch
S3
G9SA-321-T@
K1 and K2 (NC)
G9SA-321-T@
K1 and K2 (NO)
G9SA-321-T@
K3 and K4 (NC)
G9SA-321-T@
K3 and K4 (NO)
KM1 and KM2
(NC)
KM1 and KM2
(NO)
Operation
instruction
Motor M1
rotation
OFF-delay time 1
G9SA-EX031
K1 and K2 (NC)
G9SA-EX-031
K1 and K2 (NO)
KM3 and KM4
(NC)
KM3 and KM4
(NO)
Operation
instruction
Motor M2
rotation
OFF-delay time 2
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Feedback loop
Off delay Control
timer circuit
Off delay
timer
Operation
instruction
Motor controller
Note: This circuit achieves EN954-1 Safety Category 4.
The OFF-delay output, however, achieves EN954-1
Safety Category 3.
(c)Copyright OMRON Corporation 2007 All Rights Reserved.
G9SA
Operation
instruction
Motor controller
7