Omron G9SX-AD322-T15-RT, G9SX-AD322-T150-RC, G9SX-AD322-T15-RC, G9SX-AD322-T150-RT, G9SX-ADA222-T15-RT User Manual

Flexible Safety Unit G9SX 1

Flexible Safety Unit

G9SX

Logical AND Function Adds Flexibility
to I/O Expansion

• Facilitates partial or complete control system setup.

• Solid-state outputs (excluding Expansion Units).

• Detailed LED indications enable easy diagnosis.

• TÜV Product Service certification for compliance
with IEC/EN61508 (SIL3) and EN954-1 (Cat. 4).

• Approved by UL and CSA.

• New unit joins the Series with the following
two additional features:

-OFF-delay time of up to 150 seconds
(The OFF-delay output also complies with Cat. 4.)

-Two logical AND connection inputs

Note: Refer to Precautions on pages 17 and 18.

Features

Basic Unit
G9SX-BC

Advanced Unit
G9SX-AD

Advanced Uni

t

G9SX-AD

Advanced Unit
G9SX-AD

Tool changer door

Pallet changer door

Emergency

Stop Switch

Main door

Main Door

Pallet Changer Door

Tool Changer Door

Safety Door
Switch

Safety Door
Switch

Safety Door
Switch

Logical
connection

Emergency Stop Switch

No.

OFF-DELAY

0.5

0.4

0.3

0.2
15

10

7

5

4

3

2

1.5
1

0.6

0.7

0

S54S44S34S24S14 L1

A2T42T41T22T21

A1X2X1Y1T12T11

T33T31

T1

ERR

EI

AND

FB

ED

T2

PWR

T32

G9SX-AD322-T15

No.

OFF-DELAY

0.5

0.4

0.3

0.2
15

10

7

5

4

3

2

1.5
1

0.6

0.7

0

S54S44S34S24S14 L1

A2T42T41T22T21

A1X2X1Y1T12T11

T33T31

T1

ERR

EI

AND

FB

ED

T2

PWR

T32

G9SX-AD322-T15

No.

OFF-DELAY

0.5

0.4

0.3

0.2
15

10

7

5

4

3

2

1.5
1

0.6

0.7

0

S54S44S34S24S14 L1

A2T42T41T22T21

A1X2X1Y1T12T11

T33T31

T1

ERR

EI

AND

FB

ED

T2

PWR

T32

G9SX-AD322-T15

No.

T1 T2

FB

ERREI

PWR

L2L1S24S14

A2X2T22T21

A1X1T12T11

Y1T32 T33T31

G9SX-BC202
24VDC

● Productivity

“Partial stop” and “Complete stop” enhance productivity without sacrificing safety.

● Maintenance

LED indicators and detachable terminals for better maintenance.

● Expandability

“Logical connection” enables easier modification and expansion of machines.

Ex) Machining Center

• When the Emergency Stop Switch is pressed, the entire machine will stop.

• When a door is open, the corresponding part will not activate.

2 Flexible Safety Unit G9SX

Model Number Structure

■ Model Number Legend

1. Functions

AD/ADA: Advanced Unit
BC: Basic Unit
EX: Expansion Unit

2. Output Configuration (Instantaneous Safety Outputs)

0: None
2: 2 outputs
3: 3 outputs
4: 4 outputs

3. Output Configuration (OFF-delayed Safety Outputs)

0: None
2: 2 outputs
4: 4 outputs

4. Output Configuration (Auxiliary Outputs)

1: 1 output
2: 2 outputs

5. Max. OFF-delay Time

Advanced Unit

T15: 15 s
T150: 150 s

Basic Unit

No indicator: No OFF delay

Expansion Unit

No indicator: No OFF delay
T: OFF delay

6. Terminal Block Type

RT: Screw terminals
RC: Spring-cage terminals

Ordering Information

■ List of Models

Advanced Unit

Note: 1. The OFF-delay time can be set in 16 steps as follows:

T15: 0/0.2/0.3/0.4/0.5/0.6/0.7/1/1.5/2/3/4/5/7/10/15 s
T150: 0/10/20/30/40/50/60/70/80/90/100/110/120/130/140/150 s

2. The OFF-delayed output becomes an instantaneous output by setting the OFF-delay time to 0 s.

3. P channel MOS FET transistor output

4. PNP transistor output

12 5 634

G9SX-@@@@@@-@@@-@@

Safety outputs

(solid state) (See note 3.)

Auxiliary

outputs

(solid state)

(See note 4.)

Logical AND

connection

No. of

input

channels

Max. OFF­delay time

(See note 1.)

Rated

voltage

Terminal

block type

Model

Instanta-

neous

OFF-delayed
(See note 2.)

Inputs Outputs

3 2 2 1 1 1 or 2

channels

15 s 24 VDC Screw

terminals

G9SX-AD322-T15-RT

Spring-cage
terminals

G9SX-AD322-T15-RC

150 s Screw

terminals

G9SX-AD322-T150-RT

Spring-cage
terminals

G9SX-AD322-T150-RC

2 2 2 15 s Screw

terminals

G9SX-ADA222-T15-RT

Spring-cage
terminals

G9SX-ADA222-T15-RC

150 s Screw

terminals

G9SX-ADA222-T150-RT

Spring-cage
terminals

G9SX-ADA222-T150-RC

Flexible Safety Unit G9SX 3

Basic Unit

Note: 1. P channel MOS FET transistor output

2. PNP transistor output

Expansion Unit

Note: 1. PNP transistor output

2. The OFF-delay time is synchronized to the OFF-delay time setting in the connected Advanced Unit (G9SX-AD-@/G9SX-ADA-@).

Specifications

■ Ratings

Power input

Note: Power consumption of loads not included.

Inputs

Outputs

Note: 1. While safety outputs are in the ON state, the following signal sequence is output continuously for diagnosis. When using the safety outputs

as input signals to control devices (i.e. Programmable Controllers), consider the OFF pulse shown below.

2. The following derating is required when Units are mounted side-by-side.

G9SX-AD322-@/G9SX-ADA222-@/G9SX-BC202-@: 0.4 A max. load current

Safety outputs

(solid state) (See note 1.)

Auxiliary outputs

(solid state)

(See note 2.)

Logical AND

connection

No. of

input

channels

Rated

voltage

Terminal block type Model

Instantaneous OFF-delayed Inputs Outputs

2 --- 2 0 2 1 or 2

channels

24 VDC Screw terminals G9SX-BC202-RT

Spring-cage terminals G9SX-BC202-RC

Safety outputs (contact) Auxiliary

outputs

(solid state)

(See note 1.)

OFF-delay

time

Rated voltage Terminal block type Model

Instantaneous OFF-delayed

4 PST-NO --- 1 --- 24 VDC Screw terminals G9SX-EX401-RT

Spring-cage terminals G9SX-EX401-RC

--- 4 PST-NO (See note 2.) Screw terminals G9SX-EX041-T-RT
Spring-cage terminals G9SX-EX041-T-RC

Item G9SX-AD322-@/ADA222-@ G9SX-BC202-@ G9SX-EX-@

Rated supply voltage 24 VDC
Operating voltage range

−15% to 10% of rated supply voltage

Rated power consumption (See note.) 4 W max. 3 W max. 2 W max.

Item G9SX-AD322-@/ADA222-@ G9SX-BC202-@

Safety input Operating voltage: 20.4 VDC to 26.4 VDC, internal impedance: approx. 2.8 k

Ω

Feedback/reset input

Item G9SX-AD322-@/ADA222-@ G9SX-BC202-@

Instantaneous safety output
OFF-delayed safety output (See note 1.)

P channel MOS FET transistor output
Load current:

Using 2 outputs or less: 1 A DC max. (See note 2.)
Using 3 outputs or more: 0.8 A DC max.

P channel MOS FET transistor output
Load current:

Using 1 output: 1 A DC max. (See note 2.)
Using 2 outputs: 0.8 A DC max.

Auxiliary output PNP transistor output

Load current: 100 mA max.

ON

OFF

360 µs max.

Approx. 100 ms

4 Flexible Safety Unit G9SX

Expansion Unit

■ Characteristics

Note: 1. When two or more Units are connected by logical AND, the operating time and response time are the sum total of the operating times

and response times, respectively, of all the Units connected by logical AND.

2. Represents the operating time when the safety input turns ON with all other conditions set.

3. Represents the operating time when the logical AND input turns ON with all other conditions set.

4. This does not include the operating time or response time of Advanced Units that are connected.

5. This does not include the operating time or response time of internal relays in the G9SX-EX-@.

6. For the G9SX-@-RT (with screw terminals) only.

Item G9SX-EX-@

Rated load 250 VAC, 3A/30 VDC, 3A (resistive load)
Rated carry current 3 A
Maximum switching voltage 250 VAC, 125 VDC

Item G9SX-AD322-@/ADA222-@ G9SX-BC202-@ G9SX-EX-@

Over-voltage category (IEC/EN 60664-1) II II (Safety relay outputs 13 to

43 and 14 to 44: III)

Operating time (OFF to ON state)
(See note 1.)

50 ms max. (Safety input: ON)
(See note 2.)

100 ms max. (Logical AND
connection input: ON) (See
note 3.)

50 ms max. (Safety input: ON) 30 ms max. (See note 4.)

Response time (ON to OFF state)
(See note 1.)

15 ms max. 10 ms max. (See note 4.)

ON-state residual voltage 3.0 V max. (safety output, auxiliary output)
OFF-state leakage current 0.1 mA max. (safety output, auxiliary output)

Maximum wiring length of safety input and
logic AND input

100 m max.
(External connection impedance: 100

Ω max. and 10 nF max.)

Reset input time (Reset button pressing time) 100 ms min.
Accuracy of OFF-delay time (See note 5.) Within

± 5% of the set value --- Within ± 5% of the set value

Insulation
resistance

Between logical AND connection
terminals, and power supply
input terminals and other input
and output terminals connected
together

20 M

Ω min. (by 100 VDC

megger)

--- ---

Between all terminals connected
together and DIN rail

20 M

Ω min. (at 100 VDC) 100 MΩ min. (at 500 VDC)

Dielectric
strength

Between logical AND connection
terminals, and power supply
input terminals and other input
and output terminals connected
together

500 VAC for 1 min --- ---

Between all terminals connected
together and DIN rail

500 VAC for 1 min 1,200 VAC for 1 min

Between different poles of
outputs

--- ---

Between safety relay outputs
connected together and other
terminals connected together

2,200 VAC for 1 min

Vibration resistance Frequency: 10 to 55 to 10 Hz, 0.375-mm single amplitude (0.75-mm double amplitude)

Mechanical
shock
resistance

Destruction

300 m/s

2

Malfunction

100 m/s

2

Durability Electrical --- 100,000 cycles min.

(rated load, switching
frequency: 1,800 cycles/hour)

Mechanical --- 5,000,000 cycles min.

(switching frequency: 7,200
cycles/hour)

Ambient temperature

−10 to 55°C (no icing or condensation)

Ambient humidity 25% to 85%
Terminal tightening torque (See note 6.) 0.5 N·m
Weight Approx. 200 g Approx. 125 g Approx. 165 g

Flexible Safety Unit G9SX 5

Logical AND Connection

Note: 1. See Logical AND Connection Combinations below for details.

2. The number of G9SX-EX401-@ Expansion Units or G9SX-EX041-T-@ Expansion Units (OFF-delayed Model) not included.

3. G9SX-EX401-@ Expansion Units and G9SX-EX041-T-@ Expansion Units (OFF-delayed Model) can be mixed.

Logical AND Connection Combinations

1. One logical AND connection output from an Advanced Unit

G9SX-AD can be logical AND connected to up to four Advanced
Units.

2. Two logical AND outputs from a Basic Unit G9SX-BC can be
logical AND connected to up to eight Advanced Units.

3. Two logical AND outputs from an Advanced Unit G9SX-ADA can
be logical AND connected to up to eight Advanced Units.

4. Any Advanced Unit with logical AND input can be logical AND
connected to Advanced Units on up to five tiers.

5. Two logical AND connection outputs, each from different
Advanced/Basic Units, can be logical AND connected to
a single G9SX-ADA Unit.

6. The largest possible system configuration contains a total of 20
Advanced and Basic Units. In this configuration, each Advanced
Unit can have up to five Expansion Units.

Item G9SX-AD322-@/ADA222-@ G9SX-BC202-@ G9SX-EX-@

Number of Units connected per
logical AND output

4 Units max. ---

Total number of Units connected
by logical AND (See note 2.)

20 Units max. ---

Number of Units connected in
series by logical AND

5 Units max. ---

Max. number of Expansion Units
connected (See note 3.)

--- 5 Units

Maximum cable length for logical
AND input

100 m ---

G9SX-AD

G9SX-ADG9SX-ADG9SX-ADG9SX-AD

G9SX-BC

G9SX-AD

G9SX-ADG9SX-ADG9SX-ADG9SX-AD

G9SX-AD G9SX-AD G9SX-AD

G9SX-AD

G9SX-ADG9SX-ADG9SX-ADG9SX-AD

G9SX-ADA

G9SX-AD G9SX-AD G9SX-AD

G9SX-BC or

G9SX-AD or

G9SX-ADA

G9SX-AD

G9SX-AD

G9SX-AD

G9SX-AD

G9SX-BC G9SX-BC

G9SX-ADA

Number of Units connected
per logical AND output:
4 Units max.

Total number of Units
connected by logical AND:
20 Units max.

Number of Units connected
in series by logical AND:
5 Units max.

Note 1: Basic Unit = G9SX-BC
Advanced Unit = G9SX-AD or G9SX-ADA
Note 2: The G9SX-AD322-T-@ has only one logical AND
output.

Advanced Unit
or Basic Unit

Advanced UnitAdvanced Unit Advanced Unit

Advanced Unit

Advanced Unit Advanced Unit Advanced Unit

Advanced Unit

Advanced Unit Advanced Unit Advanced Unit

Advanced Unit Advanced Unit Advanced Unit

Advanced Unit

Advanced Unit Advanced Unit Advanced Unit

Advanced Unit

6 Flexible Safety Unit G9SX

Response Time and Operating Time

The following table shows the response time for two or more Units that are logical AND connected.

Note: 1. The maximum response time (not including Expansion Units) in this block flow diagram is the time it takes the output from the Unit on the

lowest tier to switch from ON to OFF after the input to the Unit on the highest tier switches from ON to OFF.

2. The maximum response time (including Expansion Units) in this block flow diagram is the time it takes the output from the Expansion Unit
connected to the Unit on the lowest tier to switch from ON to OFF after the input to the Unit on the highest tier switches from ON to OFF.

3. The maximum operating time (not including Expansion Units) in this block flow diagram is the time it takes the output from the Unit on
the lowest tier to switch from OFF to ON after the input to the Unit on the highest tier switches from OFF to ON.

4. The maximum operating time (including Expansion Units) in this block flow diagram is the time it takes the output from the Expansion
Unit connected to the Unit on the lowest tier to switch from OFF to ON after the input to the Unit on the highest tier switches from OFF to
ON.

Item Block flow diagram Max. response

time (not

including

Expansion

Units)

(See note 1.)

Max. response

time (including

Expansion

Units)

(See note 2.)

Max. operating

time (not
including

Expansion

Units)

(See note 3.)

Max. operating
time (including

Expansion

Units)

(See note 4.)

Tier
First tier 15 ms 25 ms 50 ms 80 ms

Second tier 30 ms 40 ms 150 ms 180 ms

Third tier 45 ms 55 ms 250 ms 280 ms

Fourth tier 60 ms 70 ms 350 ms 380 ms

Fifth tier 75 ms 85 ms 450 ms 480 ms

Advanced Unit or Basic Unit

Advanced Unit

Advanced Unit

Advanced Unit

Advanced Unit

Flexible Safety Unit G9SX 7

Connections

■ Internal Connection

G9SX-AD322-@ (Advanced Unit)

Note: 1. Internal power supply circuit is not isolated.

2. Logical AND input is isolated.

3. Outputs S14 to S54 are internally redundant.

G9SX-BC202-@ (Basic Unit)

Note: 1. Internal power supply circuit is not isolated.

2. Outputs S14 and S24 are internally redundant.

G9SX-EX401-@/G9SX-EX041-T-@ (Expansion
Unit / Expansion Unit OFF-delayed model)

Note: 1. Internal power supply circuit is not isolated.

2. Relay outputs are isolated.

G9SX-ADA222-@ (Advanced Unit)

Note: 1. Internal power supply circuit is not isolated.

2. Logical AND inputs are isolated.

3. Outputs S14 to S54 are internally redundant.

(See
note 1.)

(See note 2.)

S14A2S24 S34 S44 S54

L1 X1 X2

Power
supply

circuit

Safety
Input 1

Safety
Input 2

Reset/Feedback

Input

Cross

fault

detection

input

Safety output control

Auxiliary

output control

Logical AND input

Expansion Unit

output control

T11A1 T12 T21 T22 T31 T32 T33 Y1 T41 T42

(

See note 3.

)

(See
note 1.)

Reset/Feedback

Input

Cross

fault

detection

input

S14A2S24 L1 L2

X1 X2

Power
supply
circuit

Safety
Input 1

Safety
Input 2

Safety outputs control

Auxiliary

outputs control

T11A1T12 T21 T22 T31 T32 T33

Y1

(

See note 2.

)

A2 X2

Power

supply

circuit

Auxiliary

output
control

Safety
output
control

A1

K1

13 23 33 43

14 24 34 44

K2

Exp.
sig.
IN

Exp.

sig.

OUT

(See
note 1.)

(See note 2.)

(See
note 1.)

(See
note

2.)

S14A2S24 S44 S54

L1 L2 X1 X2

Power

supply

circuit

Safety
Input 1

Safety
Input 2

Reset/Feedback

Input

Cross

fault

detection

input

Safety output control

Auxiliary

output control

Logical

AND input

Expansion Unit

output control

T11A1 T12 T21 T22 T31 T32 T33 Y1

T41 T42

(See note 3.)

T51 T52

Logical

AND input 2

8 Flexible Safety Unit G9SX

Dimensions

Note: All units are in millimeters unless otherwise indicated.

Advanced Unit

Basic Unit

No.

OFF-DELAY

0.5

0.4

0.3

0.2

15

10

7

5

4

3

2

1.5

1

0.6

0.7

0

S54S44S34S24S14 L1

A2T42T41T22T21

A1X2X1Y1T12T11

T33T31

T1

ERR

EI

AND

FB

ED

T2

PWR

T32

G9SX-AD322-T15
24VDC

(10)

115 max.

100 max.

35.5 max.
(35)*

(6) (See note 2.)

(6) (See note 2.)

* T

yp

ical dimension

FBPWR

T1

AND

EIT2ED

ERR

S44

T41

S14

T21

S24

T22

S34 S54

T42L1A2

T33T32T31

X1Y1

T12T11

X2 A1

Terminal arrangement

Note: 1. Above outline drawing is for -RC terminal type.

2. For -RC terminal type only.

G9SX-AD322-@

FBPWR

T1

AND1

EIT2ED

ERR

AND2

S54

T41

S14

T21

S24

T22

S44

L1

T42

L2

A2

T33T32T31

X1Y1

T12T11

X2 A1

Terminal arrangement

T52T51

(10)

115 max.

100 max.

(6) (See note 2.)

(6) (See note 2.)

* T

yp

ical dimension

No.

OFF-DELAY

0.5

0.4

0.3

0.2

15

10

7

5

4

3

2

1.5

1

0.6

0.7

0

L1S54S44S24S14 L2

A2T42T41T22T21

A1X2X1Y1T12T11

T33T31

T1

ERR

EI

AND1

FB

ED

T2

PWR

T32 T52T51

G9SX-ADA222-T150
24VDC

AND2

35.5 max.
(35)*

A

N

D

1

A

N

D

2

G9SX-ADA222-T150

Note: 1. Above outline drawing is for -RC terminal type.

2. For -RC terminal type only.

G9SX-ADA222-@

No.

T1 T2

FB

ERREI

PWR

L2L1S24S14

A2X2T22T21

A1X1T12T11

Y1T32 T33T31

G9SX-BC202
24VDC

23 max.

(22.5)*

* T

yp

ical dimension

115 max.

100 max.

(6) (See note 2.)

(6) (See note 2.)

FBPWR

T1

EI

T2

ERR

L2

A2

S14

T21

S24

T22L1X2

Y1

T33T32T31

A1X1

T12T11

Terminal arrangement

Note: 1. Above outline drawing is for -RC terminal type.

2. For -RC terminal type only.

G9SX-BC202-@

Flexible Safety Unit G9SX 9

Expansion Unit

43332313

44342414

A2X2A1

G9SX-EX401
24VDC

23 max.

(22.5)*

* Typical dimension

115 max.

100 max.

(6) (See note 2.)

(6) (See note 2.

)

43332313

PWR

44

A2

14 24A134

X2

EI

ERR

43332313

PWR

44

A2

14 24A134

X2

ED

ERR

G9SX-EX041-T-@

(Expansion Unit
with OFF Delay)

G9SX-EX401-@

(Expansion Unit)

Terminal arrangement

Note: 1. Above outline drawing is for -RC terminal type.

2. For -RC terminal type only.

G9SX-EX401-@

Expansion Unit (OFF-delayed Model)

G9SX-EX041-T-@

10 Flexible Safety Unit G9SX

■ Wiring of Inputs and Outputs

Signal name Terminal name Description of operation Wiring

Power supply input A1, A2 The input terminals for power supply.

Connect the power source to the A1 and A2
terminals.

Connect the power supply plus (24 VDC) to the A1
terminal.

Connect the power supply minus (GND) to the A2
terminal.

Safety input 1 T11, T12 To set the safety outputs in the ON state, the HIGH

state signals must be input to both safety input 1 and
safety input 2. Otherwise the safety outputs cannot
be in the ON state.

Corresponds to
Safety Category
2

Safety input 2 T21, T22 Corresponds to

Safety Category
3

Corresponds to
Safety Category
4

Feedback/reset input T31, T32, T33 To set the safety outputs in the ON state, the ON

state signal must be input to T33.
Otherwise the safety outputs cannot be in the ON
state.

Auto reset

To set the safety outputs in the ON state, the signal
input to T32 must change from the OFF state to the
ON state, and then to the OFF state. Otherwise the
safety outputs cannot be in the ON state.

Manual reset

Logical AND
connection input

T41, T42,
T51, T52

A logical AND connection means that one unit (Unit
A) outputs a safety signal “a” to a subsequent unit
(Unit B) and Unit B calculates the logical
multiplication (AND) (i.e., outputs the AND) of the
signal “a” and safety signal “b”, which is input to Unit
B.

Thereby the logic of the safety output of Unit B is “a”
AND “b”. (An AND of inputs “a” and “b” is output.)

To set the safety outputs of the subsequent Unit in
the ON state, its logical AND connection preset
switch must be set to AND (enable) and the HIGH
state signal must be input to T41 of the subsequent
unit.

Cross fault detection
input

Y1 Selects the mode for the failure detecting (cross fault

detecting) function for the safety inputs of G9SX
corresponding to the connection of the cross fault
detection input.

Keep Y1 open when using T11, T21. (Wiring
corresponding to category 4)

Connect Y1 to 24 VDC when not using T11, T21.
(Wiring corresponding to category 2 or 3, or when

connecting safety sensors)

Instantaneous safety
output

S14, S24, S34 Turns ON/OFF according to the state of the safety

inputs, feedback/reset inputs, and logical AND
connection inputs.

During OFF-delay state, the Instantaneous safety
outputs are not able to turn ON.

Keep these outputs open when not used.

OFF-delayed safety
output

S44, S54 OFF-delayed safety outputs.

The OFF-delay time is set by the OFF-delay preset
switch.

When the delay time is set to zero, these outputs can
be used as non-delay outputs.

Keep these outputs open when not used.

Logical connection
output

L1, L2 Outputs a signal of the same logic as the

instantaneous safety outputs.

Keep these outputs open when not used.

Auxiliary monitor
output

X1 Outputs a signal of the same logic as the

instantaneous safety outputs

Keep these outputs open when not used.

Auxiliary error output X2 Outputs when the error indicator is lit or blinking. Keep these outputs open when not used.

T11 T12 T21 T22

Y1

+24 V

+24 V

T11 T12 T21 T22

Y1

+24 V +24 V

+24 V

T11 T12 T21 T22

Y1

NC

Feedback loop

KM

+24 V

T31 T33T32

Feedback loop

KM

+24 V

T31 T33T32

Reset

Switch

G9SX-BC202 or
G9SX-AD322-T

L1

A2

G9SX-AD322-T

L1

T41 T42

A2

A2

G9SX-AD322-T

Logical AND connection sig. (1st layer)

Next unit (4 unit max.)

Next unit

(

5 layers max.

)

T41 T42

G9SX-AD322-T

L1

T41 T42

Logical AND connection sig. (2nd layer)

Next unit (4 unit max.)

Input b

Input a

Output (a)

Output (a&b)

Unit B

Unit A

Flexible Safety Unit G9SX 11

■ Connecting Safety Sensors and the G9SX

1. When connecting safety sensors to the G9SX, the Y1 terminal must be connected to 24 VDC.

The G9SX will detect a connection error, if the Y1 terminal is open.

2. In many cases, safety sensor outputs include an OFF-shot pulse for self diagnosis.
The following condition of test pulse is applicable as safety inputs for the G9SX.

• OFF-shot pulse width of the sensor, during the ON-state: 340

µs max.

Operation

■ Functions

Logical AND Connection

● Example with G9SX-AD322-@

The logical AND connection means that the Basic Unit (or Advanced
Unit) outputs a safety signal “a” to an Advanced Unit, and the
Advanced Unit calculates the logical multiplication (AND) of the
safety signal “a” and safety signal “b.” The safety output of an
Advanced Unit with the logical AND connection shown in the
following diagram is “a” AND “b”.

This is illustrated using the application in the following diagram as an
example. The equipment here has two hazards identified as Robot 1
and Robot 2, and it is equipped with a safety door switch and an
emergency stop button. You may have overall control where both
Robot 1 and Robot 2 are stopped every time the emergency stop
button is pressed. You may also have partial control where only
Robot 1, which is closest to the door, is stopped when the door is
opened. In that case, Robot 2 will continue to operate.

The actual situation using a G9SX for this application is shown in this
example.

(Note: The logical AND setting on the Advanced Unit must be set to
AND (enabled).)

● Example with G9SX-ADA222-@

The Advanced Unit G9SX-ADA222-@ is equipped with two logical
AND connection inputs. Therefore, it is capable of receiving two
safety signals, each from different Advanced or Basic Units. As
shown in the diagram below, the output of Advanced Unit G9SX­ADA222-@ will be “a” AND “b” AND “c”.

340 µs max.

Basic Unit
G9SX-BC202-@

a

ab

a

(

AND) b

Advanced Unit
G9SX-AD322-@

Logical connection

Basic Unit

Robot 2

ab

Robot 1

Emergency stop button

Advanced Unit

Door Switch

Robot 2

Robot 1

Emergency
stop button

Safety Door
Switch

Logical connection

Basic Unit
G9SX-BC202-

@

a

a

c

a AND b AND c

Advanced Unit
G9SX-ADA222-@

b

b

Basic Unit
G9SX-BC202-@

12 Flexible Safety Unit G9SX

Connecting Expansion Units

• The G9SX-EX and G9SX-EX-T Expansion Units can be connected

to an Advanced Unit (G9SX-AD322-@/G9SX-ADA222-@) to
increase the number of safety outputs. (They cannot be connected
to a Basic Unit.)

• A maximum of five Expansion Units can be connected to one
Advanced Unit. This may be a combination of G9SX-EX
Instantaneous types and G9SX-EX-T OFF-delayed types.

• Remove the terminating connector from the receptacle on the
Advanced Unit and insert the Expansion Unit cable connector into
the receptacle. Insert the terminating connector into the receptacle
on the Expansion Unit at the very end (rightmost).

• When Expansion Units are connected to an Advanced Unit, make
sure that power is supplied to every Expansion Unit. (Refer to the
following diagram for actual Expansion Unit connection.)

Setting Procedure

1. Cross Fault Detection (Advanced Unit/

Basic Unit)

Set the cross fault detection mode for safety inputs by shorting Y1 to
24 V or leaving it open. When cross fault detection is set to ON,
short-circuit failures are detected between safety inputs T11-T12 and
T21-22. When a cross fault is detected, the following will occur.

1. The safety outputs and logical AND outputs lock out.

2. The LED error indicator is lit.

3. The error output (auxiliary output) turns ON.

2. Reset Mode (Advanced Unit/Basic Unit)

Set the reset mode using feedback/reset input terminals T31, T32,
and T33.
Auto reset mode is selected when terminal T32 is shorted to 24 V
and manual reset mode is selected when terminal T33 is shorted to
24 V.

3. Setting Logical AND Connection
(Advanced Unit)

When connecting two or more Advanced Units (or Basic Units) by
logical AND connection, set the logical AND connection preset
switch on the Advanced Unit that is on the input side (Advanced Unit
G9SX-AD322 in the following diagram) to AND.

(1) Using G9SX-AD322 on the Input Side

Note: 1. A setting error will occur and Advanced Unit G9SX-AD322

will lock out if the logical AND setting switch on the Unit is
set to OFF.

2. Set the logical AND setting switch on Advanced Unit A to
OFF or an error will occur.

3. A logical AND input cannot be sent to a Basic Unit.

Cross fault

detection

Wiring

OFF Corresponds to

Safety Category 2

Corresponds to
Safety Category 3

ON Corresponds to

Safety Category 4

ED

PWR

A2X2
44342414

A1

33 4313 23

No.

G9SX-EX
24VDC

ED

PWR

A2X2
44342414

A1

33 4313 23

No.

G9SX-EX
24VDC

No.

OFF-DELAY

0.5

0.4

0.3

0.2
15

10

7

5

4

3

2

1.5

1

0.6

0.7

0

S54S44S34S24S14 L1

A2T42T41T22T21

A1X2X1Y1T12T11

T33T31

T1

ERR

EI

AND

FB

ED

T2

PWR

T32

G9SX-AD322-T15

ED

PWR

A2X2
44342414

A1

33 4313 23

No.

G9SX-EX
24VDC

ED

PWR

A2X2
44342414

A1

33 4313 23

No.

G9SX-EX
24VDC

ED

PWR

A2X2
44342414

A1

33 4313 23

No.

G9SX-EX
24VDC

Expansion Unit

Terminating
connector

Advanced Unit

Y1

T22T21T12T11

+24 V

+24 V

Y1

T22T21T12T11

+24 V

+24 V +24 V

Y1

T22T21T12T11

+24 V

+24 V

Auto reset mode

KM1

KM2

KM3

KM4

KM5

KM1

KM2Reset

switch

KM3

KM4

KM5

T33T32T31T33T32T31

Manual reset mode

Advanced Unit

G9SX-AD322

Advanced Unit A

L1 A2

T41 T42

AND

OFF

AND

OFF

Flexible Safety Unit G9SX 13

(2) Using G9SX-ADA222 on the Input Side

Note: 1. When not connecting Advanced Unit B, leave terminals T41

and T42 of the G9SX-ADA222 Advanced Unit open, and set
the logical AND setting switch T41/T42 to OFF.

2. When not connecting Advanced Unit C, leave terminals T51
and T52 of the G9SX-ADA222 Advanced Unit open, and set
the logical AND setting switch T51/T52 to OFF.

The following table shows the relationship between the logical ON
setting switches and the conditions for safety outputs turning ON.

4. Setting the OFF-delay Time (Advanced
Unit)

The OFF-delay preset time on an Advanced Unit is set from the OFF­delay time preset switch (1 each on the front and back of the Unit).
Normal operation will only occur if both switches are identically set.
An error will occur if the switches are not identically set.

Refer to the following illustration for details on setting switch
positions.

G9SX-AD322-T15/G9SX-ADA222-T15

G9SX-AD222-T150/G9SX-ADA222-T150

Logical ON setting

switch

Conditions for safety outputs turning

ON

T41/T42 T51/T52 Safety

input

Logic input 1Logic input

2

OFF OFF ON OFF OFF
AND OFF ON ON OFF
OFF AND ON OFF ON
AND AND ON ON ON

Advanced Unit

G9SX-ADA222

Advanced Unit B

L1 A2

T41 T42

Advanced Unit C

L1 A2

T51 T52

T41/T42

T51/T52

AND

OFF

AND

OFF

AND

OFF

AND

OFF

No.

OFF-DELAY

0.5

0.4

0.3

0.2
15

10

7

5

4

3

2

1.5

1

0.6

0.7

0

S54S44S34S24S14 L1

A2T42T41T22T21

A1X2X1Y1T12T11

T33T31

T1

ERR

EI

AND

FB

ED

T2

PWR

T32

AND

OFF

OFF-DELAY

T41/ T42

0

15

10

7

5

4

3

0.2

0.3

0.4

0.5

0.6

0.7

Switch

Switch

Front Back

OFF-DELAY

0.5

0.4

0.3

0.2

15

10

7

5

4

3

2

1.5

1

0.6

0.7

0

OFF-DELAY

0.5

0.4

0.3

0.2

15

10

7

5

4

3

2

1.5

1

0.6

0.7

0

Notch

Example 1: 0-second
OFF-delay
setting

Example 2: 1-second
OFF-delay
setting

cutting edge

ex.1) 0 second off-delay settingex.2) 70 second off-delay settin

g

OFF-DELAY

40

30

20

10

150

140

130

120

110

100

90

80

70

50

60

0

OFF-DELAY

40

30

20

10

150

140

130

120

110

100

90

80

70

50

60

0

14 Flexible Safety Unit G9SX

LED Indicators

Note: Refer to Fault Detection on the next page for details.

Settings Indication (at Power ON)

Settings for the G9SX can be checked by the orange indicators for approx. 3 seconds after the power is turned ON. During this settings indication
period, the ERR indicator will light, however the auxiliary error output will remain OFF

Marking Color Name G9SX-AD G9SX-ADA G9SX-BC G9SX-EX G9SX-EX-T Function Reference

PWR Green Power supply

indicator

❍❍ ❍❍❍ Lights up while power is

supplied.

---

T1 Orange Safety input #1

indicator

❍❍ ❍--- --- Lights up while a HIGH state

signal is input to T12.
Blinks when an error relating to

safety input #1 occurs.

(See note.)

T2 Orange Safety input #2

indicator

❍❍ ❍--- --- Lights up while a HIGH state

signal is input to T22.
Blinks when an error relating to

safety input #2 occurs.

FB Orange Feedback/

reset input
indicator

❍❍ ❍--- --- Lights up in the following cases:

With automatic reset while a
HIGH state signal is input to
T33.

With manual reset while a
HIGH state signal is input to
T32.

Blinks when an error relating to
feedback/reset input occurs.

AND Orange Logical AND

input indicator

❍ --- --- --- --- Lights up while a HIGH state

signal is input to T41.
Blinks when an error relating to

logical AND connection input
occurs.

AND1 Orange Logical AND

input indicator

--- ❍ --- --- --- Lights up while a HIGH state
signal is input to T41.

Blinks when an error relating to
logical AND connection input
occurs.

AND2 Orange Logical AND

input indicator

--- ❍ --- --- --- Lights up while a HIGH state
signal is input to T51.

Blinks when an error relating to
logical AND connection input
occurs.

EI Orange Safety output

indicator

❍❍ ❍❍--- Lights up while the

Instantaneous safety outputs
(S14, S24, S34) are in the ON­state.

Blinks when an error relating to
the instantaneous safety output
occurs.

ED Orange OFF-delayed

safety output
indicator

❍❍ --- --- ❍ Lights up while OFF-delayed

safety outputs (S44, S54) are in
the ON-state.

Blinks when an error relating to
OFF-delayed safety output
occurs.

ERR Red Error indicator ❍❍ ❍❍❍ Lights up or blinks when an

error occurs.

Indicator Item Setting position Indicator

status

Setting mode Setting status

T1 Cross fault detection mode Y1 terminal Lit Detection mode Y1 = open

Not lit Non-detection mode Y1 = 24 VDC

FB Reset mode T32 or T33 terminal Lit Manual reset mode T33 = 24 VDC

Not lit Auto reset mode T32 = 24 VDC

AND
(AND1,
AND2)

Logical AND connection input mode Logical AND

connection preset
switch

Lit Enable logical AND input “AND”
Not lit Disable logical AND input “OFF”

Flexible Safety Unit G9SX 15

Fault Detection

When the G9SX detects a fault, the ERR indicator and/or other indicators light up or blink to inform the user about the fault.
Check and take necessary measures referring to the following table, and then re-supply power to the G9SX.

(Advanced Unit/Basic Unit)

ERR

indicator

Other

indicator

Fault Expected causes of the fault Check points and measures to take

Blinks

--- Fault due to electro-

magnetic disturbance or of
internal circuits.

1) Excessive electro-magnetic disturbance

2) Failure of the internal circuit

1) Check the disturbance level around the G9SX
and the related system.

2) Replace with a new product.

Lights up

T1 blinks

Fault involved with safety
input 1

1) Failure involving the wiring of safety
input 1

2) Incorrect setting of cross fault detection
input

3) Failure of the circuit of safety input 1

1) Check the wiring to T11 and T12.

2) Check the wiring to Y1.

3) Replace with a new product.

T2 blinks

Fault involved with safety
input 2

1) Failure involving the wiring of safety
input 2

2) Incorrect setting of cross fault detection
input

3) Failure of circuits of safety input 2

1) Check the wiring to T21 and T22.

2) Check the wiring to Y1.

3) Replace with a new product.

FB blinks

Faults involved with
feedback/reset input

1) Failures involving the wiring of feedback/
reset input.

2) Failures of the circuit of feedback/reset
input

1) Check the wiring to T31, T32 and T33.

2) Replace with a new product.

Fault in Expansion Unit 1) Improper feedback signals from

Expansion Unit

2) Abnormal supply voltage to Expansion
Unit

3) Failure of the circuit of safety relay
contact outputs

1) Check the connecting cable of Expansion Unit
and the connection of the termination socket.

2) Check the supply voltage to Expansion Unit.

Note: Make sure that all Expansion units' PWR

indicators are lit.

3) Replace the Expansion Unit with a new one.

EI blinks

Fault involved with
instantaneous safety
outputs or logical
connection outputs or
auxiliary monitor output

1) Failure involving the wiring of
instantaneous safety outputs

2) Failure of the circuit of Instantaneous
safety outputs

3) Failure involving the wiring of the logical
connection output

4) Failure of the circuit of the logical
connection output

5) Failure involving the wiring of the
auxiliary monitor output

6) Impermissible high ambient
temperature

1) Check the wiring to S14, S24, and S34.

2) Replace with a new product.

3) Check the wiring to L1 and L2.

4) Replace with a new product.

5) Check the wiring to X1.

6) Check the ambient temperature and spacing
around the G9SX.

ED blinks

Fault involved with OFF­delayed safety outputs

1) Failure involving the wiring of OFF­delayed safety relay contact outputs

2) Incorrect set values for OFF-delay time

3) Failure of the circuit of OFF-delayed
safety relay contact outputs

4) Impermissible high ambient
temperature

1) Check the wiring to S44 and S54.

2) Confirm the set values of the two OFF-delay
time preset switches.

3) Replace with a new product.

4) Check the ambient temperature and spacing
around the G9SX.

AND blinks

(AND1,

AND2)

Fault involved with logical
AND connection input

1) Failure involving the wiring of the logical
AND connection input

2) Incorrect setting for the logical AND
connection input

3) Failure of the circuit of the logical AND
connection input

1) Check the wiring to T41 and T42 (T51 and
T52).

Note: Make sure that the wiring length for the

T41, T42, T51, T52 terminal is less than
100 meters.

Note: Make sure that the logical AND connection

signal is branched for less than 4 units.

2) Confirm the set value of the logical AND
connection preset switch.

3) Replace with a new product.

All

indicators

except PWR

blink

Supply voltage outside the
rated value

1) Supply voltage outside the rated value 1) Check the supply voltage to Expansion Units.

16 Flexible Safety Unit G9SX

When indicators other than the ERR indicator blink, check and take necessary actions referring to the following table.

(Expansion Unit)

ERR

indicator

Other

indicators

Fault Expected cause of the fault Check points and measures to take

Off

T1

Blink

Mismatch between input 1
and input 2.

The input status between input 1 and input
2 is different, due to contact failure or a
short circuit of safety input device(s) or a
wiring fault.

Check the wiring from safety input devices to the
G9SX. Or check the input sequence of safety
input devices. After removing the fault, turn both
safety inputs to the OFF state.

T2

ERR

indicator

Other

indicators

Fault Expected cause of the faults Check points and measures to take

Light up

--- Fault involved with safety
relay outputs of Expansion
Units

1) Welding of relay contacts

2) Failure of the internal circuit

Replace with a new product.

Flexible Safety Unit G9SX 17

Precautions

!WARNING

■ Precautions for Safe Use

1. Use G9SX within an enclosure with IP54 protection or higher of

IEC/EN60529.

2. Incorrect wiring may lead to loss of safety function. Wire
conductors correctly and verify the operation of G9SX before
commissioning the system in which G9SX is incorporated.

3. Do not apply DC voltages exceeding the rated voltages, or any
AC voltages to the G9SX power supply input.

4. Use DC supply satisfying requirements below to prevent electric
shock.

• DC power supply with double or reinforced insulation, for

example, according to IEC/EN60950 or EN50178 or a
transformer according to IEC/EN61558.

• DC supply satisfies the requirement for class 2 circuits or limited

voltage/current circuit stated in UL 508.

5. Apply properly specified voltages to G9SX inputs.
Applying inappropriate voltages cause G9SX to fail to perform its
specified function, which leads to the loss of safety functions or
damages to G9SX

6. Auxiliary error outputs and auxiliary monitoring outputs are NOT
safety outputs. Do not use auxiliary outputs as any safety output.
Such incorrect use causes loss of safety function of G9SX and its
relevant system.
Also Logical connection outputs can only be used for logical
connections between G9SXs.

7. After installation of G9SX, qualified personnel should confirm the
installation, and should conduct test operations and maintenance.
The qualified personnel should be qualified and authorized to
secure the safety on each phases of design, installation, running,
maintenance and disposal of system.

8. A person in charge, who is familiar to the machine in which G9SX
is to be installed, should conduct and verify the installation.

9. Turn OFF the signal to Safety input or Logical AND connection
input every 24hours and make sure G9SX operates without faults
by checking the state of the ERR indicator.

10.Do not dismantle, repair, or modify G9SX. It may lead to loss of its
safety functions.

11.Use only appropriate components or devices complying with
relevant safety standards corresponding to the required level of
safety categories.
Conformity to requirements of safety category is determined as
an entire system.
It is recommended to consult a certification body regarding
assessment of conformity to the required safety level.

12.OMRON shall not be responsible for conformity with any safety
standards regarding to customer's entire system.

13.Disconnect G9SX from power supply when wiring, to prevent
electric shock or unexpected operation.

14.Be cautious not to have your fingers caught when attaching
terminal sockets to the plugs on G9SX.

15.The lifetime of G9SX depends on the conditions of switching of its
outputs. Be sure to conduct its test operation under actual
operating conditions in advance and use it within appropriate
switching cycles

16.Do not use in combustible gases or explosive gases. Arcs or heat
generated by switching elements of G9SX can lead to fire or
explosion.

Serious injury may possibly occur due to breakdown of
safety outputs.

Do not connect loads beyond the rated value to the safety
outputs.

Serious injury may possibly occur due to loss of required
safety functions.

Wire G9SX properly so that supply voltages or voltages
for loads do NOT touch the safety inputs accidentally or
unintentionally.

Serious injury may possibly occur due to damages of
safety inputs.

Apply protection circuitry against back electromotive
force in case connecting inductive loads to safety outputs.

Serious injury may possibly occur due to loss of safety
functions. Use devices appropriate for the application and
the condition where G9SX is used.

Control Devices Requirements

Emergency stop switch Use approved devices with Direct

Opening
Mechanism complying with IEC/EN

60947-5-1
Door interlocking switch
Limit switch

Use approved devices with Direct

Opening

Mechanism complying with IEC/EN

60947-5-1 and capable of switching

micro loads of 24VDC, 5mA.
Safety Sensor Use approved devices complying with

the relevant product standards,

regulations and rules in the country

where it is used.

Consult a certification body to assess

that the entire system satisfies the

required safety category level.
Relay with forcibly guided

contacts

Use approved devices with forcibly

guided contacts complying with EN

50205. For feedback purpose use

devices with contacts capable of

switching micro loads of 24VDC, 5mA.
Contactor Use contactors with forcibly guided

mechanism to input the signal to

Feedback/Reset input of G9SX through

the NC contact of the contactor. For

feedback purpose use devices with

contacts capable of switching micro

loads of 24VDC, 5mA. Failure to open

contacts of a contactor cannot be

detected by monitoring its auxiliary NC

contact without forcibly guided

mechanism.
Other devices Evaluate whether devices used are

appropriate to satisfy the requirements

of safety category level.

18 Flexible Safety Unit G9SX

■ Precautions for Correct Use

1. Handle with care

Do not drop G9SX to the ground or expose to excessive vibration
or mechanical shocks. G9SX may be damaged and may not
function properly.

2. Conditions of storage
Do not store in such conditions stated below.

a. In direct sunlight
b. At ambient temperatures out of the range of

−10 to 55°C.

c. At relative humidity out of the range of 25% to 85% or under

such temperature change that causes condensation.
d. In corrosive or combustible gases
e. With vibration or mechanical shocks out of the rated values.
f. Under splashing of water, oil, chemicals
g. In the atmosphere containing dust, saline or metal powder.
G9SX may be damaged and may not function properly.

3. Mounting
Mount G9SX to DIN rails with attachments (TYPE PFP-M, not
incorporated to this product), not to drop out of rails by vibration
etc. especially when the length of DIN railing is short compared to
the widths of G9SX.

4. Following spacing around G9SX should be available to apply
rated current to outputs of G9SX and for enough ventilation and
wiring:

a. At least 25 mm beside side faces of the Advanced Unit (G9SX-

AD322-@-@/G9SX-ADA222-@-@) and side faces of the Basic
Unit (G9SX-BC202-@).

b. At least 50 mm above top face of G9SX and below bottom face

of G9SX.

5. Wiring
a. For model G9SX-@-RT (with screw terminals)

• Use the following to wire to G9SX-@-RT.

• Tighten each screw with a specified torque of 0.5 to 0.6Nm,

or the G9SX may malfunction or generate heat.

• Strip the cover of wire no longer than 7mm.

b. For model G9SX-@-RC (with spring-cage terminals)

• Use the following to wire to G9SX-@-RC

• It is recommended that stranded wire should be terminated

with insulation-covered bar terminal (DIN 46228-4 standard
compatible type) at its ends before using for connection.

6. When connecting Expansion Units (G9SX-EX@-@) to Advanced
Unit (G9SX-AD322-@-@/G9SX-ADA222-@-@):

a. Follow the procedure below:

• Remove the termination connector from the receptacle on
Advanced Unit,

• Insert the head of the connecting cable of Expansion Unit to
the receptacle on the Advanced Unit

• Set the termination connector to the receptacle on the
Expansion Unit at the end position. When Advanced Unit is
used without expansion units, leave the termination connector
set on the Advanced Unit.

b. Do not remove the termination connector or the connecting

cable of the Expansion Unit while the system is operating.

c. Before applying supply voltage, confirm that the connecting

sockets and plugs are locked firmly.

d. All of the Expansion Units should be supplied with its specified

voltages within 10s after the connected Advanced Unit is
supplied with voltage.
Otherwise, Advanced Unit detects the power-supply error for
the Expansion Units.

7. Use cables with length less than 100m to connect to Safety
Inputs, Feed-back/Reset inputs, or between Logical AND
connection inputs and Logical connection outputs, respectively.

8. Set the time duration of OFF-delay to an appropriate value that
does not cause the loss of safety function of system.

9. Logical connection between Units:
a. When using Logical AND connection inputs, set the Logical

connection preset switch to 'AND' position for the units which
the logical connection signal are input to.

b. Connect Logical connection outputs appropriately to Logical

AND connection inputs of the relevant unit. Verify the operation
of G9SX before commissioning the system.

c. When configuring the safety related system, be sure to

consider that the delay of response time caused by logical
connections do not degrade the safety function of the system.

10.To determine safety distance to hazards, take into account the
delay of Safety outputs caused by the following time:

a. Response time of Safety inputs
b. Response time of Logical AND connection input

(See also “Ratings and specifications, note 5.”)
c. Preset off-delay time
d. Accuracy of off-delay time

11.Start entire system after more than 5s have passed since
applying supply voltage to all G9SXs in the system.

12.G9SX may malfunction due to electro-magnetic disturbances. Be
sure to connect the terminal A2 to ground. To suppress electrical
noise, apply a surge absorber to the coil of inductive load.

13.Devices connected to G9SX may operate unexpectedly. When
replacing G9SX, disconnect it from power supply.

14.Adhesion of solvent such as alcohol, thinner, trichloroethane or
gasoline on the product should be avoided. Such solvents make
the marking on G9SX illegible and cause deterioration of parts.

15.Do NOT mix AC load and DC load to be switched in one G9SX­EX@-@. When switching of both AC load and DC load is
necessary, connect more than two G9SX-EX@-@ and use each
unit for AC load and DC load exclusively.

Solid wire

0.2 to 2.5mm

2

AWG24 to AWG12

Stranded wire
(Flexible wire)

0.2 to 2.5mm

2

AWG24 to AWG12

Solid wire

0.2 to 2.5mm

2

AWG24 to AWG12

Stranded wire

0.34 to 1.5mm

2

AWG22 toAWG16

ED

PWR

A2X2
44342414

A1

33 4313 23

No.

G9SX-EX
24VDC

ED

PWR

A2X2
44342414

A1

33 4313 23

No.

G9SX-EX
24VDC

G9SX-BC202

No.

T1 T2

FB

ERREI

PWB

L2L1S24S14

A2X2T22T21

A1X1T12T11

Y1T32 T33T31

No.

OFF-DELAY

0.5

0.4

0.3

0.2
15

10

7

5

4

3

2

1.5

1

0.6

0.7

0

S54S44S34S24S14 L1

A2T42T41T22T21

A1X2X1Y1T12T11

T33T31

T1

ERR

EI

AND

FB

ED

T2

PWR

T32

G9SX-AD322-T15

25 mm min. 25 mm min.

50 mm min.

50 mm min.

Flexible Safety Unit G9SX 19

Category of EN 954-1

In the condition shown in Application Examples, G9SX can be used
for the corresponding categories up to category 4.
This does NOT mean that G9SX can always be used for required
category under all the similar conditions and situations.
Conformity to the categories must be assessed as a whole system.
When using G9SX for safety categories, be sure to confirm the
conformity as a whole system.

1. Input the signals to both of the Safety inputs (T11-T12 and T21­T22).

2. Input a signal to the Safety inputs (T11-T12 and T21-T22) through
switches with Direct Opening Mechanism.
When using limit switches, at least one of them must have Direct
Opening Mechanism.

3. When connecting Safety sensor with G9SX, use TYPE 4 safety
sensor.

4. Input the signal through a NC contact of the contactor to
Feedback/Reset input (T31-T32 for manual reset or T31-T33 for
auto reset).(Refer to Application Examples)

5. Keep Cross fault detection mode input (Y1) open. However, when
connecting devices with self-diagnosis function, such as safety
sensors, apply 24VDC to Y1.

6. Be sure to Connect A2 to ground.

7. When using a G9SX-EX-@-@ Expansion Unit, connect fuses with

a current rating of 3.15 A max. to the safety relay outputs to
prevent the contacts from welding.

Compliance with International Standards

G9SX-AD-@/G9SX-ADA-@/G9SX-BC-@/G9SX-EX-@

• Approved by TÜV Product Service

EN50178
IEC/EN60204-1
EN954-1 Cat.4
IEC/EN61508 SIL3
IEC/EN61000-6-2
IEC/EN61000-6-4

• Approved by UL

UL508
UL1998
NFPA79
IEC61508

• Approved by CSA

CAN/CSA C22.2 No.142

20 Flexible Safety Unit G9SX

Application Examples

G9SX-AD322-T15 (24 VDC) (1-channel Emergency Stop Switch Input / Manual Reset)

S14A2S24 S34 S44 S54

L1 X1 X2

T11A1T12 T21 T22 T31 T32 T33

Y1

T41 T42

G9SX-AD322-T15

Control circuit

KM2

KM1

KM4

KM3

+24 V

Feedback Loop

+24 V

12

11

+24 V

KM1 KM2 KM3 KM4

S3

4

M1

KM2

KM1

M2

KM4

KM3

Motor controller

OFF

AND

PLC etc.

S1

NCNCNCNC

Motor controller

(Operation command)

GND

S2

KM1, KM2 N.C. contact

KM3, KM4 N.C. contact

KM1, KM2 N.O. contact

OFF-delay time

KM3, KM4 N.O. contact

Operation command

Rotation of motor

Timing chart

Emergency stop switch S1

Reset switch S2

S1: Emergency Stop Switch
S2: Reset Switch S2
KM1 to KM4: Contactor
M1, M2: 3-phase motor

Note: This example corresponds to category 2 (EN 954-1)

Flexible Safety Unit G9SX 21

G9SX-AD322-T15 (24 VDC) (2-channel Safety Sensor / Auto Reset)

S14A2S24 S34 S44 S54

L1 X1 X2

T11A1T12 T21 T22 T31 T32 T33

Y1

T41 T42

+24 V+24 V

+24 V

KM1 KM2 KM3 KM4

S34

M1

KM2

KM1

M2

KM4

KM3

Motor controller

OFF

AND

F3SN-A

PLC etc.

Receiver Emitter

Motor controller

(Op

eration command

)

OSSD1

OSSD2

GND

GND

G9SX-AD322-T15

Control circuit

NCNCNCNC

KM2

KM1

KM4

KM3

Feedback Loop

Safety sensor outputs

KM1, KM2 N.C. contact

KM3, KM4 N.C. contact

KM1, KM2 N.O. contact

Off-delay time

KM3, KM4 N.O. contact

Operation command

Rotation of motor

Timing chart

F3SN-A: Safety sensor
KM1 to KM4: Contactor
M1, M2: 3-phase motor

Note: 1. This example corresponds to category 4 (EN 954-1).

2. For further information of settings and wiring, refer to the catalog or instruction manual of the connected sensor.

3. Use safety sensors with PNP outputs.

22 Flexible Safety Unit G9SX

G9SX-BC202 (24 VDC) (2-channel Emergency Stop Switch Input / Manual Reset) +
G9SX-AD322-T15 (24 VDC) (2-channel Safety Limit Switch Input / Auto Reset)

S14A2S24 S34 S44 S54

L1 X1 X2

T11A1T12 T21 T22 T31 T32 T33

Y1

T41 T42

S14A2S24 L1 L2

X1 X2

T11A1T12 T21 T22 T31 T32 T33

Y1

KM2

KM1

S2

12

11 21

22

+24 V

KM1 KM2

M1

KM2

KM1

PLC etc.

S1

+24+24 V

+24 V

KM3 KM4

Motor controller

(Op

eration command

)

KM5 KM6

M2

KM4

KM3

S34

M3

KM6

KM5

Motor controller

OFF

AND

PLC etc.

NC

NC

open

23

24

11

12

S4

S3

Feedback Loop

Feedback Loop

GND

GND

G9SX-AD322-T15

Control circuit

G9SX-BC202

Control circuit

KM4

KM3

KM6

KM5

G9SX-BC202 (upper unit)

Reset switch S2

Emergency stop switch S1

KM1, KM2 N.C. contact

KM1, KM2 N.O. contact

Logical AND output L1

Logical AND input T41

KM3, KM4 N.C. contact

Limit switch S4

Safety limit switch S3

KM5, KM6 N.C. contact

KM3, KM4 N.O. contact

OFF-delay tim

e

KM5, KM6 N.O. contact

Operation command

(1) Door opened: Only the lower Unit stops.
(2) Emergency stop button pressed: Both the upper and lower Unit stop.

Rotation of motor

OFF-delay time

G9SX-AD322-T15 (lower unit)

(1)

(2)

Timing chart

Note: This example corresponds to category 4 (EN 954-1).

S3: Safety limit switch
S4: Limit switch
KM3 to KM6: Contactor
M2, M3: 3-phase motor

S1: Emergency Stop Switch
S2: Reset Switch
KM1, KM2: Contactor
M1: 3-phase motor

Flexible Safety Unit G9SX 23

G9SX-AD322-T15 (24 VDC) + G9SX-EX041-T (24 VDC)
(Guard Lock Safety Door Switch (Mechanical Lock), 2-channel Safety Limit Switch Inputs /
Manual Reset)

S34

Motor controller

(Operation command)

S14A2S24 S34 S44 S54

L1 X1 X2

T11A1T12 T21 T22 T31 T32 T33

Y1

T41 T42

KM2

KM6

KM1

+24 V +24 V

Feedback Loop

Stop signal

Guard

+24 V

KM1

KM5 KM6

KM2 KM3 KM4

M1

KM2

KM1

M3

KM6

KM5

M2

KM4

KM3

Motor controller

OFF

AND

GND

G9SX-AD322-T15

G9SX-EX041-T

Control circuit

Control

circuit

A2 X2

A1

K1

13 23 33 43

14 24 34 44

K2

Lock release signal

S3

NC NC NC

(See note 2.)

(See note 2.)

PLC etc.

S2

OPEN

S4

31

32
11

12

S1

KM2

KM6

KM1

Limit switch S1

Lock release signal

S4

Stop signal

Reset switch S3

KM1, KM2 N.C. contact

KM1, KM2 N.O. contact

KM3 to KM6 N.C. contact

KM3 to KM6 N.O. contact

Operation command

Rotation of motor

Guard lock safety door switch S2

OFF-dela

y

time

Guard can be opened.

Guard closed → opened

Timing chart

S1: Safety limit switch
S2: Guard lock safety door switch
S3: Reset switch
S4: Lock release switch
KM1 to KM6: Contactor
M1 to M3: 3-phase motor

Note: 1. This example corresponds to category 4 (EN 954-1).

2. Connect the N.C. contacts of contactors KM1, KM2, KM3,

KM4, KM5, and KM6 in series.

24 Flexible Safety Unit G9SX

G9SX-BC202 (24 VDC) (2-channel Emergency Stop Switch Input/Manual Reset) +
G9SX-AD322-T15 (24 VDC) (2-channel Safety Limit Switch Input/Auto Reset) +
G9SX-AD322-T15 (24 VDC) (2-channel Safety Limit Switch Input/Auto Reset) +
G9SX-ADA222-T150 (24 VDC) (2-channel Safety Limit Switch Input/Auto Reset) +

Note: This example corresponds to category 4.

S14A2S24 S34 S44 S54

L1 X1 X2

T11A1T12 T21 T22 T31 T32 T33Y1T41 T42

S14A2S24 L1 L2

X1 X2

T11A1T12 T21 T22 T31 T32 T33

Y1

KM2

KM1

S2

12

11 21

22

+24 V

KM1 KM2

M1

KM2

KM1

PLC etc.

S1

+24+24 V V

+24 V

KM3 KM4

M2

KM4

KM3

S144

M4

KM8

KM7

Motor controller

OFF

AND

PLC etc.

NC

NC

open

23

24

11

12

S4

S3

Feedback Loop

Feedback Loop

GND

GND

G9SX-AD322-T15 (Unit B)

Control circuit

G9SX-BC202 (Unit A)

Control circuit

KM4

KM3

S1: Emergency stop switch
S2: Reset switch
S3, S5, S7: Safety limit switch
S4, S6, S8: Limit switch
KM1 to KM8: Contactor
M1 to M4: 3-phase motor

Guard 1

S14A2S24 S34 S44 S54

L1 X1 X2

T11A1T12 T21 T22 T31 T32 T33Y1T41 T42

+24

+24 V V

KM5 KM6

M3

KM6

KM5

OFF

AND

PLC etc.

NC

open

23

24

11

12

S6

S5

GND

G9SX-AD322-T15 (Unit C)

Control circuit

KM6

KM5

Guard 2

S14A2S24 S44 S54

L1 X1 X2

T11A1T12 T21 T22 T31 T32 T33Y1T41 T42

+24+24 V V

Motor controller

(Op

eration command

)

OFF

AND

PLC etc.

NC

open

23

24

11

12

S8

S7

Feedback Loop

GND

G9SX-ADA222-T150 (Unit D)

Control circuit

KM8

KM7

Guard 3

T51 T52

T41 T51

KM7 KM8

L2

Feedback Loop

Flexible Safety Unit G9SX 25

(3)

Timing chart

G9SX-BC202 (Unit A)

Emergency stop switch S1

Reset switch S2

KM1, KM2, N.C. contact

KM1, KM2, N.O. contact

Logical AND output L1, L2

G9SX-AD322-T15 (Unit B)

Logical AND input T41

Safety limit switch S3

Limit switch S4

KM3, KM4, N.C. contact

KM3, KM4, N.O. contact

Logical AND output L1

G9SX-AD322-T15 (Unit C)

Logical AND input T41

Safety limit switch S5

Limit switch S6

KM5, KM6, N.C. contact

KM5, KM6, N.O. contact

Logical AND output L1

G9SX-ADA222-T150 (Unit D)

Logical AND input T41

Safety limit switch S7

Limit switch S8

KM7, KM8, N.C. contact

KM7, KM8, N.O. contact

Rotation of motor

Logical AND input T51

Operation command

OFF-delay time OFF-delay time OFF-delay time

(1) Guard 1 opened: Unit B and Unit D stops.
(2) Guard 3 opened: Unit D stops.
(3) Emergency stop button pressed: All units stop.

(1)

(2)

26 Flexible Safety Unit G9SX

Flexible Safety Unit G9SX 27

In the interest of product improvement, specifications are subject to change without notice.

ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.

To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.

Cat. No. J150-E1-04

OMRON Corporation

Industrial Automation Company

Safety Devices Division

Shiokoji Horikawa, Shimogyo-ku,
Kyoto, 600-8530 Japan
Tel: [phone]/Fax: [phone]

0106

Warranty and Application Considerations

Read and Understand this Catalog

Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you
have any questions or comments.

Warranty and Limitations of Liability

WARRANTY

OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or
other period if specified) from date of sale by OMRON.

OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT,
MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER
ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET
THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED.

LIMITATIONS OF LIABILITY

OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS,
OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON
CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY.

In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE

PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED, STORED,
INSTALLED, AND MAINTAINED AND NOT SUBJECT TO CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE
MODIFICATION OR REPAIR.

Application Considerations

SUITABILITY FOR USE

OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of
products in the customer's application or use of the products.

Take all necessary steps to determine the suitability of the product for the systems, machines, and equipment with which it will
be used.

Know and observe all prohibitions of use applicable to this product.
NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT

ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON
PRODUCTS ARE PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR
SYSTEM.

Disclaimers

PERFORMANCE DATA

Performance data given in this catalog is provided as a guide for the user in determining suitability and does not constitute a
warranty. It may represent the result of OMRON's test conditions, and the users must correlate it to actual application
requirements. Actual performance is subject to the OMRON Warranty and Limitations of Liability.

CHANGE IN SPECIFICATIONS

Product specifications and accessories may be changed at any time based on improvements and other reasons. Consult with
your OMRON representative at any time to confirm actual specifications of purchased product.

DIMENSIONS AND WEIGHTS

Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.