Omron G9SA Series Manual page 11

G9SA-501 (24 VAC/VDC) and G9SA-EX301 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 and KM2: Magnetic Contactor
M: 3-phase motor
Timing Chart
Limit switches S1
and S2
Reset switch
S3
G9SA-501
K1, K2, K3 and
K4 (NC)
G9SA-501
K1, K2, K3, and
K4 (NO)
G9SA-EX301
K1 and K2 (NC)
G9SA-EX301
K1 and K2 (NO)
KM1 and KM2
(NC)
KM1 and KM2
(NO)
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Feedback loop
Control
circuit
Note: This circuit achieves EN954-1 Safety Category 4.
(c)Copyright OMRON Corporation 2007 All Rights Reserved.
G9SA
10