9

G9SA

G9SA-301 (100 to 240 VAC) with 2-channel Limit Switch Input/Auto-reset

Note: The above PL is only the evaluation result of the example. The PL must be evaluated in an actual application by the customer after confirming the usage conditions.

●Application Overview

• The power supply to the motor M is turned OFF when the S1 and S2 detect that the guard is opened.

• The power supply to the motor M is kept OFF until the guard is closed.

PL/safety category

Model

Stop category

Reset

PLe/4 equivalent

Safety Limit Switch D4B-N/D4N/D4F

Safety Relay Unit G9SA-301 100 to 240 VAC

0Auto

Feedback loop

Timing Chart

Open

Limit switches

S1 and S2

K1 and K2

(NC)

K1 and K2

(NO)

KM1 and KM2

(NC)

KM1 and KM2

(NO)

S1:

Safety Limit Switch

with direct opening mechanism (NC)

(D4B-N, D4N, D4F)

S2:

Limit switch (NO)

KM1 and KM2:

Magnetic Contactor

M:

3-phase motor

AC

DC

Control

circuit

Guard