Safety Relay Unit
G9SA
CSM_G9SA_DS_E_11_8
The G9SA Series Offers a Complete
Line-up of Compact Units.
• Four kinds of 45-mm wide Units are available:
A 3-pole model, a 5-pole model, and models with 3 poles
and 2 OFF-delay poles, as well as a Two-hand Controller.
Also available are 17.5-mm wide Expansion Units with 3
poles and 3 OFF-delay poles.
• Simple expansion connection.
• OFF-delay models have 15-step OFF-delay settings.
• Conforms to EN ISO13849-1 (PLe/Safety Category 4) *.
• Both DIN track mounting and screw mounting are possible.
* Except for some models.
Refer to "Applicable Performance Level (PL)" on page 13, or "Reliability
data for safety of control components_SISTEMA library" on OMRON's
website.
For the most recent information on models that have been certified for
safety standards, refer to your OMRON website.
.
Be sure to read the "Safety Precautions" on page 15
Model Number Structure
Model Number Legend
Note: 1. Please see “Ordering Information” on page 2 for the actual models that can be ordered.
2. Specify the power supply voltage when ordering.
G9SA-@@@@@@-@@@@
1 2 3 4 5
6
1. Function
None: Emergency stop
EX:
Expansion Unit
TH:
Two-hand Controller
2. Contact Configuration (Safety Output)
0:
None
3:
3PST-NO
5:
5PST-NO
3. Contact Configuration (OFF-delay Output)
0:
None
2:
DPST-NO
3:
3PST-NO
4. Contact Configuration (Auxiliary Output)
0:
None
1:
SPST-NC
5. Input Configuration
None: 1-channel or 2-channel input possible
6. OFF-delay Time (Max. setting time)
None: No OFF-delay
T075: 7.5 seconds
T15: 15 seconds
T30: 30 seconds
1
G9SA
Ordering Information
Specify the power supply voltage when ordering.
G9SA Master Units
Emergency-stop Units
Main contacts
Auxiliary contact
Number of input channels
Rated voltage
24 VAC/VDC
3PST-NO
SPST-NC
5PST-NO
100 to 240 VAC
1 channel or 2 channels
possible
24 VAC/VDC
100 to 240 VAC
Model
G9SA-301
G9SA-501
Emergency-stop OFF-delay Units
Main contacts
OFF-delay
contacts
Auxiliary
contact
Number of
input
channels
OFF-delay
time
Rated voltage
24 VAC/VDC
7.5 s
3PST-NO
DPST-NO
SPST-NC
1 channel or
2 channels
possible
100 to 240 VAC
24 VAC/VDC
15 s
100 to 240 VAC
24 VAC/VDC
30 s
100 to 240 VAC
Model
G9SA-321-T075
G9SA-321-T15
G9SA-321-T30
Note: Set to maximum values in the factory.
* The following 15-step OFF-delay time settings are available:
T075: 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, and 7.5 s
T15:1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, and 15 s
T30:2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, and 30 s
Two-hand Controller
Main contacts
Auxiliary contact
Number of input channels
3PST-NO
SPST-NC
2 channels
Rated voltage
24 VAC/VDC
100 to 240 VAC
Model
G9SA-TH301
Expansion Unit
Expansion Unit
The Expansion Unit connects to a G9SA-301, G9SA-501, G9SA-321, or G9SA-TH301.
Main contacts
Auxiliary contact
Model
3PST-NO
SPST-NC
G9SA-EX301
Expansion Units with OFF-delay Outputs
The Expansion Unit connects to a G9SA-301, G9SA-501 or G9SA-321.
Main contact form
3PST-NO
Auxiliary contact
SPST-NC
OFF-delay time
Model
7.5 s
G9SA-EX031-T075
15 s
G9SA-EX031-T15
30 s
G9SA-EX031-T30
Note: Set to maximum values in the factory.
* The following 15-step OFF-delay time settings are available:
T075: 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, and 7.5 s
T15:1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, and 15 s
T30:2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, and 30 s
2
G9SA
Specifications
Ratings
Power Input
Item
Model
G9SA-301/TH301
G9SA-501
Power supply voltage
Operating voltage range
Power consumption *
G9SA-321-T@
24 VAC/VDC:24 VAC, 50/60 Hz, or 24 VDC
100 to 240 VAC:100 to 240 VAC, 50/60 Hz
85% to 110% of rated power supply voltage
24 VAC/VDC: 1.8 VA/1.7 W max.
100 to 240 VAC: 9 VA max.
24 VAC/VDC: 2.8 VA/2.6 W max.
100 to 240 VAC: 11 VA max.
24 VAC/VDC: 3.5 VA/3.3 W max.
100 to 240 VAC: 12.5 VA max.
* When an Expansion Unit is connected, the power consumption is increased by 2 VA/2 W max.
Inputs
Item
Model
G9SA-301/321-T@/TH301
G9SA-501
40 mA max.
60 mA max.
Input current *
* When an Expansion Unit is connected, the input current is increased by 30 mA max.
Contacts
Item
Model
G9SA-301/501/321-T@/TH301/EX301/EX031-T@
Load
Resistive load
250 VAC, 5 A
30 VDC, 5 A
Rated load
Rated carry current
5A
Characteristics
Item
Model
G9SA-301/TH301
Contact resistance *1
G9SA-501/321-T@
G9SA-EX301/EX031-T@
100 mΩ
Operating time *2
30 ms max.
Response time *3
10 ms max.
Isolation voltage (Ui)
250 VAC
Impulse withstand voltage (Uimp)
4 kV
Between input and output
Isolation
Insulation
specification resistance *4 Between different poles of output
100 MΩ min. (at 500 VDC)
Dielectric
strength
Between input and output
Vibration resistance
Shock
resistance
Durability *5
2,500 VAC 1min.
Between different poles of output
10 to 55 to 10 Hz, 0.375-mm single amplitude (0.75-mm double amplitude)
Destruction
300 m/s2
Malfunction
100 m/s2
Mechanical
5,000,000 operations min. (at approx. 7,200 operations/hr)
Electrical
100,000 operations min. (at approx. 1,800 operations/hr)
Failure rate (P Level) (reference value)
Ambient operating temperature
5 VDC, 1 mA
−25 to 55°C (with no icing or condensation)
Ambient operating humidity
35% to 85%
Terminal tightening torque
Weight *6
0.98 N·m
Approx. 210 g
Approx. 270 g
Approx. 130 g
*1. The contact resistance was measured with 1 A at 5 VDC using the voltage-drop method.
*2. Not Including bounce time.
*3. The response time is the time it takes for the main contact to open after the input is turned OFF. Includes bounce time.
*4. The insulation resistance was measured with 500 VDC at the same places that the dielectric strength was checked.
*5. The durability is for an ambient temperature of 15 to 35°C and an ambient humidity of 25% to 75%.
*6. Weight shown is for 24-VAC/VDC type. For 100 to 240-VAC type, add approximately 20 g.
3
G9SA
Connections
Internal Connections
G9SA-301 (24 VAC/VDC)
A1 A2 T11
T12
G9SA-301 (100 to 240 VAC)
T32
T31
c
SA
a
b
b
Control
circuit
2
5
JP
K1
a
1
2
3
4
5
6
K2
K1
b
A
T22
B
14 24 34 42
PE T21
T32
A1 A2 T11
13 23 33 43 53 61
K4
a
b
K3
b
K2
2 K1
5
K2
Control
circuit
T22
A
*2
JP
a
1
2
3
4
5
6
13 23 33 43 53 61
K1
K2
3
4
K3
K4
a
b
K3
K1
AC
b
K2
JP
2 K1
5
K2
Control
circuit
DC
B
14
PE T21
24 34 44 54 62
1
2
3
4
5
6
13 23 33 43 53 61
T32
K4
Control
circuit
Off delay
timer
K4
K2
b
T12
2 K1
5
K2
JP
1
2
3
4
5
6
a
T31
K1
T32
13 23 33 43 53 61
3
4
K3
K2
K3
K4
a
K1
b
AC
K4
K2
Off Delay
Timer
DC
Control
circuit
2 K1
5
K2
JP
1
2
3
4
5
6
b
6
6
PE T21
14 24 34 44 54 62
1
K3
a
b
A1 A2 T11
3
4
K3
K2
B
*1
G9SA-321-T@ (100 to 240 VAC)
T31
SA
A
*2
T12
K1
T23 T22
*1
1
T23
T22
A
*2
14
B
T13 T11 T12
PE T21
24 34 44 54 62
*1
*3
G9SA-TH301 (24 VAC/VDC)
T23 T22
TH
23 33 41
T13 T11 T12
A1 A2
K2
K2
2
5
Control circuit
6
*3
T31 T32
13
23 33 41
K1
3
4
1
14 24 34 44 54 62
*1
G9SA-TH301 (100 to 240 VAC)
13
T31 T32
SA
B
A
*2
K1
PE
T32
K4
G9SA-321-T@ (24 VAC/VDC)
A1 A2
T31
6
T23
K1
14 24 34 42
T12
6
PE T21
c
B
*1
1
3
4
K3
K4
K2
SA
TH
JP
2
5
G9SA-501 (100 to 240 VAC)
T31
K1
A
*2
1
A1 A2 T11
T23 T22
*1
T12
K1
Control
circuit
a
b
K2
1
2
3
4
5
6
6
T23
c
K1
DC
G9SA-501 (24 VAC/VDC)
TH
3
4
K2
K1
AC
K2
*2
A1 A2 T11
13 23 33 41
T32
K2
6
PE T21
T31
1
K1
K2
K1
T12
3
4
1
TH
A1 A2 T11
13 23 33 41
JP
K1
3
4
K2
6
PE
T23 T21 T22
K2
2
5
Control circuit
1
AC
DC
14 24 34 42
T23 T21 T22
1
2
3
4
5
6
JP
1
2
3
4
5
6
K1
14 24 34 42
G9SA-EX301
13 23 33 41
1
2
5
4
K1
1
2
3
4
5
6
K2
K1
K2
6
3
14 24 34 42
G9SA-EX031-T@
1
K2
1
2
3
4
5
6
13
23 33 41
14
24 34 42
4
2
5
Off delay
timer
K1
K2
K1
6
Note: 1. With 100 to 240-VAC type, be sure to connect PE to a protective
ground. With 24-VAC/VDC type, if the power supply is not
connected to a protective ground, be sure to connect PE to a
protective ground.
2. With 24-VAC/VDC type, the power supply terminals A1 and A2
have polarities. A2 is the negative pole.
*1. Use terminals A and B to switch reset mode.
A to B open: Manual reset
A to B closed: Auto-reset
*2. Terminal T23 is used for 2-channel input with a positive common
(when connecting a safety sensor with a PNP output).
When using T23, make sure that T21 and T22 are open.
For 1-channel input, make sure that T12 and T23 are shorted.
*3. Terminals 43-44 and terminals 53-54 are OFF-delayed outputs.
3
4
G9SA
Wiring of Inputs and Outputs
Signal name
Terminal name
Description of operation
The input terminals for power supply. Connect the power source to the A1 and A2 terminals.
DC inputs have polarity, so A1 should be connected to the positive side and A2 to the negative side.
Power supply input
A1, A2
Safety input 1
T11, T12
Safety input 2
T21, T22, T23 *1
Feedback/reset input
T31, T32
To set the safety outputs in the ON state, the ON state signal must be input to T31 - T32. Otherwise the
safety outputs cannot be in the ON state.
Instantaneous safety outputs
See below. *2
Turns ON/OFF according to the state of the safety inputs and feedback/reset inputs. During OFF-delay
state, the Instantaneous safety outputs are not able to turn ON.
OFF-delayed safety outputs
See below. *2
OFF-delayed safety outputs. The OFF-delay time is set by the OFF-delay preset switch.
Auxiliary output
See below. *2
Synchronized with Instantaneous Safety Output.
Manual/Auto selector input
A, B *3
Switch between Auto Reset and Manual Reset modes.
Ground terminal
PE
Be sure to connect the PE terminal to a protective earth for 100-240 VAC models.
Where the 24 VAC/VDC model power supply is not grounded, lease be sure to connect the PE to a
protective earth.
To set the safety outputs in the ON state, the ON state signals must be input to both safety input 1 and
safety input 2. Otherwise the safety outputs cannot be in the ON state.
*1. Terminal T23
Terminal T23 is used for 2-channel input with a positive common (when connecting a safety sensor with a PNP output). When T23 is being
used, please open T21 and T22. For 1-channel input, short circuit T12-T23 before use.
*2. Output Contacts
G9SA-301: Safety Output Contacts 13-14, 23-24, 33-34. Auxiliary Contact 41-42.
G9SA-501: Safety Output Contacts 13-14, 23-24, 33-34, 43-44, 53-54. Auxiliary Contact 61-62.
G9SA-321-T@: Safety Output Contacts 13-14, 23-24, 33-34. Safety OFF-delay Output Contact 43-44, 53-54. Auxiliary Contact 61-62.
*3. Terminals A and B
A-B Opening: Manual Reset
A-B Short Circuit: Auto Reset
5
G9SA
Dimensions and Terminal Arrangement
(Unit: mm)
G9SA-301
G9SA-501
G9SA-321-T@
G9SA-TH301
Terminal Arrangement
G9SA-301
13 23 33
91
G9SA-501
G9SA-321-T@
G9SA-TH301
41
13 23 33 43 53 61
T11 T12 T31 T32 T23 A1
T11 T12 T31 T32 T23 A1
PWR (green)
K1 (green)
PWR (green)
K1 (green)
41
T11 T12 T13 T31 T32 A1
PWR (green)
K1 (green)
K2 (green)
K3 (green)
K2 (green)
13 23 33
(See note 1.)
K2 (green)
K4 (green)
T21 T22 A B PE A2
T21 T22 A B PE A2
T21 T22 T23
PE A2
14 24 34
14 24 34 44 54 62
14 24 34
42
10.5
G9SA-301:
G9SA-501:
G9SA-321-T@:
G9SA-TH301:
5.9
4.6 dia.
7 × 5=35
42
Twenty, M3
Twenty-four, M3
Twenty-four, M3
Twenty-one, M3
Mounting Holes
Two, 4.2 dia. or M4
9
(See note 1)
76 max. 63
43
84±0.3
Connector cover *
5.6
9
35±0.3
45 max.
Note 1: The OFF-delay time setting switch is
found on the G9SA-321-T@ only.
2: The K1 to K4 indicators light when the NO contacts of
internal relays K1 to K4 close.
* Do not remove unless an Expansion Unit is being used.
R2.3
111 max.
G9SA-EX301
G9SA-EX031-T@
5
Mounting Holes
Two, 4.2 dia. or M4
Terminal Arrangement
G9SA-EX301
G9SA-EX031-T@
91
87±0.3
33 41
13 23
PWR (green)
K1 (green)
K2 (green)
10.5
14 24
Eight, M3
34 42
OFF-delay time
setting switch
(See note 1)
5.9
4.6 dia.
7
9
42
76 max. 63
Note 1: The OFF-delay time setting switch is
found on the G9SA-EX031-T@ only.
2: The K1 and K2 indicators light when
the NO contacts of internal relays K1
and K2 close.
43
OFF-delay time
setting switch
(See note 1)
5.6
13.2
5
R2.3
17.5 max.
70
111 max.
6
G9SA
Application Examples
G9SA-301 (24 VAC/VDC) with 2-channel Limit Switch Input/Auto-reset
Highest achievable PL/
safety category
Model
Stop category
Reset
0
Auto
Safety Limit Switch D4B-N/D4N/D4F
Safety Relay Unit G9SA-301 (24 VAC/VDC)
PLe/4 equivalent
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.
Timing Chart
Limit switches
S1 and S2
23
S2
24
KM1 and KM2
(NO)
Guard
11
S1
Feedback loop
12
KM1
KM2
S1:
S2:
KM1 and KM2:
M:
Open
A1 A2 T11
T12
T31
T32
a
13 23 33 41
3
4
1
TH
K1
K1 K2
SA
K2
K1
b
K2
a
b
Safety limit switch
Limit switch
Magnetic contactor
Motor
Control
Circuit
JP
2
5
1
2
3
4
5
6
KM1
KM2
6
PE T21
T23 T22
A
B
14 24 34 42
M
KM1
KM2
7
G9SA
G9SA-301 (24 VAC/VDC) with 2-channel Limit Switch Input/Manual Reset
Highest achievable PL/
safety category
Model
Safety Limit Switch D4B-N/D4N/D4F
Safety Relay Unit G9SA-301 (24 VAC/VDC)
PLe/4 equivalent
Stop category
Reset
0
Manual
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 and the reset switch S3 is pressed.
Timing Chart
23
S2
Limit switches
S1 and S2
24
Guard
11
Reset switch S3
S1
Feedback loop
KM1 and KM2
(NO)
12
KM1
KM2
S3
Open
A1 A2 T11
T12
T31
T32
a
13 23 33 41
K1
K1 K2
K2
SA
K1
b
K2
a
b
Safety limit switch
Limit switch
Reset switch
Magnetic contactor
Motor
3
4
1
TH
S1:
S2:
S3:
KM1 and KM2:
M:
Control
Circuit
JP
2
5
1
2
3
4
5
6
KM1
KM2
6
PE T21
T23 T22
A
B
14 24 34 42
M
KM1
KM2
8
G9SA
G9SA-301 (100 to 240 VAC) with 2-channel Limit Switch Input/Auto-reset
Highest achievable PL/
safety category
Model
Stop category
Reset
0
Auto
Safety Limit Switch D4B-N/D4N/D4F
Safety Relay Unit G9SA-301 (100 to 240 VAC)
PLe/4 equivalent
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.
Timing Chart
23
S2
Limit switches
S1 and S2
24
KM1 and KM2
(NO)
Guard
11
S1
Feedback loop
12
KM1
S1:
S2:
KM1 and KM2:
M:
KM2
Open
A1 A2 T11
T12
T31
T32
13 23 33 41
3
4
1
a
K1
K1 K2
K2
AC
K1
b
K2
a
b
Safety limit switch
Limit switch
Magnetic contactor
Motor
Control
Circuit
JP
2
5
DC
1
2
3
4
5
6
KM1
KM2
6
PE T21
T23 T22
A
B
14 24 34 42
M
KM1
KM2
9
G9SA
G9SA-301 (24 VAC/VDC) with 2-channel Emergency Stop Switch Input/Manual Reset
Highest achievable PL/
safety category
Model
Stop category
Reset
0
Manual
Emergency Stop Switch A165E/A22E
Safety Relay Unit G9SA-301 (24 VAC/VDC)
PLe/4 equivalent
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 emergency stop switch is pressed.
• The power supply to the motor M is kept OFF until the reset switch S2 is pressed while the emergency stop switch is released.
S1
11
21
Timing Chart
Feedback loop
12
22
S2
KM1
Emergency
stop switch S1
KM2
Reset switch
S2
KM1 and KM2
(NO)
A1 A2 T11
T12
T31
T32
1
TH
a
13 23 33 41
3
4
K1
K1 K2
K2
SA
K1
b
K2
a
b
Control
Circuit
2
5
JP
1
2
3
4
5
6
S1:
S2:
KM1 and KM2:
M:
KM1
Emergency stop switch
Reset switch
Magnetic contactor
Motor
KM2
6
PE T21
T23 T22
A
B
14 24 34 42
M
KM1
KM2
10
G9SA
G9SA-321-T@ (24 VAC/VDC) with Guard Lock Safety-door Switch + Limit Switch Input/Manual Reset
Highest achievable PL/
safety category
Model
Stop category
Reset
1
Manual
Safety Limit Switch D4B-N/D4N/D4F
Guard Lock Safety-door Switch D4SL-N/D4NL/D4JL
Safety Relay Unit G9SA-321-T@ (24 VAC/VDC)
PLd/3 equivalent
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
• Stop signal input is sent to output a stop command to the motor controller to decelerate the motor M.
• The power supply to the motor M is turned OFF after OFF-delay time.
• After the release of the guard is permitted by the lock release permission signal turned ON, the guard is open by the operation of the lock release
switch S4.
• Power supply to the motor M is kept OFF until the closing of the guard is confirmed by the limit switch S1 and guard lock safety-door switch S2,
and the reset switch S3 is pressed.
Lock
release
permission
signal
S4
Timing Chart
Guard closed opened
Safety limit switch S1
S2
Guard lock safety door switch S2
Lock release permission signal
Lock release switch S4
Guard can be opened.
Stop signal
Reset switch S3
KM1,KM2 NO contact
Condition monitoring of
Safety-door Switch
Operation command
Guard
Rotation of motor
S1
OFF-delay time
Feedback loop
Open
S3
Stop signal
KM1
KM2
A1 A2 T11
T12
T31
13 23 33 43 53 61
T32
1
TH
a
K1
3
4
K3
K2
K3
SA
K4
a
K1
b
K2
K4
Control
Circuit
Off Delay
Timer
b
JP
2 K1
5
K2
6
PE T21
1
2
3
4
5
6
Operation command
T23 T22
A
B
14 24 34 44 54 62
KM1
Motor controller
KM2
KM1
KM2
S1:
S2:
S3:
S4:
KM1 and KM2:
M:
Safety limit switch
Guard lock safety door switch
Reset switch
Lock release switch
Magnetic contactor
Motor
M
Note: The lock release enable signal must be configured so that it should turn ON after
dangerous movement is stopped and safety is ensured for the door to open.
11
G9SA
G9SA-321-T@ (24 VAC/VDC) + G9SA-EX031-T@ with Guard Lock Safety-door Switch + Limit Switch
Input/Manual Reset
Highest achievable PL/
safety category
Model
Stop category
Reset
1
Manual
Safety Limit Switch D4B-N/D4N/D4F
Guard Lock Safety-door Switch D4SL-N/D4NL/D4JL
Safety Relay Unit G9SA-321-T@ (24 VAC/VDC) + G9SA-EX031-T@
PLd/3 equivalent
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
• Stop signal input is sent to output a stop command to the motor controller to decelerate the motor M1 and M2.
• The power supply to the motor M1 and M2 is turned OFF after the OFF-delay time that has been set to each unit.
• After the release of the guard is permitted by the lock release permission signal turned ON, the guard is open by the operation of the lock release
switch S4.
• Power supply to the motor M is kept OFF until the closing of the guard is confirmed by the limit switch S1 and guard lock safety-door switch S2,
and the reset switch S3 is pressed.
Timing Chart
Guard closed opened
Lock
release
permission
signal
Safety limit switch S1
Guard lock safety door switch S2
S4
S2
Lock release permission signal
Lock release switch S4
Guard can be opened.
Stop signal
Reset switch S3
KM1,KM2 NO contact
Operation command
Condition monitoring of
Safety-door Switch
Feedback loop
Guard
Rotation of motor M1
OFF-delay time 1
KM3,KM4 NO contact
S1
KM1
Operation command
Rotation of motor M2
KM2
Stop
signal
OFF-delay time 2
KM3
S3
Open
KM4
A1 A2 T11
T12
T31
T32
13 23 33 43 53 61
13 23 33 41
1
1
TH
a
K2
3
4
K3
K3
SA
a
K1
K3
b
Control
Circuit
Off Delay
Timer
b
2 K1
5
K2
6
PE T21
A
B
Safety limit switch
Guard lock safety door switch
Reset switch
Lock release switch
5
Off Delay
Timer
K1
K2
K1
6
T23 T22
3
14 24 34 44 54 62
KM1
S1:
S2:
S3:
S4:
KM1, KM2,
KM3, and KM4:
M1, M2:
2
K2
1
2
3
4
5
6
K4
4
14 24 34 42
KM2
KM3
KM4
Operation command
Motor controller
Operation command
Magnetic contactor
Motor
Motor controller
KM1
KM3
KM2
KM4
Note: The lock release enable signal must be configured so that it should turn ON after
dangerous movement is stopped and safety is ensured for the door to open.
M1
M2
12
G9SA
G9SA-301 (24 VAC/VDC) with 2-channel Safety Sensor/Manual Reset (PNP models only)
Highest achievable PL/
safety category
Model
Safety Light Curtain F3SJ-A/-B/-E
Safety Relay Unit G9SA-301 (24 VAC/VDC)
PLe/4 equivalent
Stop category
Reset
0
Manual
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 beam is blocked.
• The power supply to the motor M is kept OFF until the beam is unblocked and the reset switch S1 is pressed.
Safety Light Curtain *
Emitter
Timing Chart
Receiver
Unblocked
Blocked
Reset switch S1
OSSD1
OSSD2
KM1 and KM2 (NO)
Feedback loop
S1
KM1
S1:
Reset switch
KM1 and KM2: Magnetic contactor
M:
Motor
KM2
24V
A1 A2 T11
T12
T31
T32
1
TH
a
13 23 33 41
3
4
K1
K1 K2
K2
SA
K1
b
K2
a
b
Control
Circuit
2
5
JP
1
2
3
4
5
6
KM1
KM2
6
PE T21
T23 T22
A
B
14 24 34 42
KM1
KM2
M
* The wiring method will vary depending on the safety light curtain model.
Review the manuals or other provided documents for the safety light curtain before proceeding with wiring.
13
G9SA
G9SA-TH301 (24 VAC/VDC) with 2-hand Inputs
Highest achievable PL/
safety category
PLe/4 equivalent
Model
Stop category
Reset
0
−
Safety Relay Unit G9SA-TH301 (24 VAC/VDC)
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 motor M is turned ON when the two-hand pushbutton switch S11 and S12 are pressed simultaneously.
• The motor M is turned OFF when one of the two-hand pushbutton switches is released.
Timing Chart
S11
S11 (NC)
S12
S11 (NO)
Feedback loop
S12 (NC)
KM1
S12 (NO)
KM2
KM1 and KM2 (NO)
0.5 s max.
Input time difference operates only
when the difference is 0.5 s max.
T13 T11 T12
A1 A2
T31 T32
13 23 33 41
K1
TH
3
4
SA
2
5
Control Circuit
1
K2
6
K2
JP
1
2
3
4
5
6
KM1
K1
KM2
PE
T23 T21 T22
14 24 34 42
KM1
KM2
M
S11, S12:
Two-hand pushbutton switches
KM1 and KM2: Magnetic contactor
Note: For S11 and S12, use a 1NO/1NC switch.
14
G9SA
Safety Precautions
Be sure to read the Common Precautions for Safety Warning at the following URL: http://www.ia.omron.com/.
Precaution for Safe Use
Meanings of Signal Words
The following signal words are used in this manual.
WARNING
Indicates a potentially hazardous situation
which, if not avoided, will result in minor or
moderate injury, or may result in serious
injury or death. Additionally there may be
significant property damage.
Precautions for
Safe Use
Supplementary comments on what to do or
avoid doing, to use the product safely.
Precautions for
Correct Use
Supplementary comments on what to do or
avoid doing, to prevent failure to operate,
malfunction, or undesirable effects on
product performance.
Meaning of Alert Symbols
Indicates prohibited actions
Indicates mandatory actions
!WARNING
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 G9SA properly so that supply
voltages or voltages for loads do NOT touch the safety
inputs accidentally or unintentionally.
Precautions for Safe Use
(1) When ready for wiring, the power source should be disconnected
first. Further, at operating this unit, the terminal cover should be
closed correctly in order to prevent an electrical shock.
(2) Do not wire in case threat of Lightning. otherwise an electric
shock may occur.
(3) Do not apply any excessive voltage or current to the input or
output circuit the G9SA. Doing so may result in damage to the
G9SA or cause a fire.
(4) Do not apply any variable voltage, otherwise G9SA may
malfunction.
(5) Do not connect any overload to the output circuit, otherwise the
G9SA in operation will generate excessive heat and the output
elements of the G9SA may short-circuit or fire may result.
(6) The lifetime of G9SA 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. Change the G9SA before expected operation.
Over operation may cause may short-circuit or may malfunction.
(7) Do not operate the G9SA with flammable or explosive gass. An
arc with operation and the heat of relay will cause a fire or an
explosion.
(8) Do not disassemble, repair, or modify the G9SA, otherwise an
electric shock may occur or the G9SA may malfunction.
(9) Use protective device (Fuse of 5 A current rating etc) for shortcircuit protection and ground fault protection, otherwise a fire
may occur or the G9SA may malfunction.
Precautions for Correct Use
(1) For malfunctions in case that the power supply picks up gradually
Malfunctions in case that the power supply picks up gradually. In
case that the input circuits close before the power supplies,
internal logic may malfunction.
(2) Handling
1. Do not drop the G9SA or shock or vibrate the G9SA
excessively. Doing so may result in damage to the G9SA or
cause G9SA to malfunction.
2. Do not turn the off-delay setting volume switch of G9SA-321T@ less than the MIN value or more than the MAX value.
Otherwise the G9SA may be failed.
(3) For adhesion of solvent
Adhesion of solvent, likely Alcohol, Thinner, Trichloroethane,
Gasoline, on the product should be prohibited. Such solvent
cause erasing the marking and being inferior of the parts.
(4) Operating and Storage Environment
Do not operate or store the G9SA under the following conditions.
Doing so may result in damage to the G9SA or cause the G9SA
to malfunction.
1. The places with direct sunlight.
2. The places with ambient temperature ranges not within -25 to
55°C.
3. The places with rapid temperature changes resulting in
condensation or relative humidity ranges not within 35 to 85%
RH.
4. The places with atmospheric pressure out of the range 86 to
106 kpa.
5. The places with corrosive or inflammable gas.
6. The places with water, oil, or chemical sprayed on the G9SA.
7. The places with vibration or shock affecting the G9SA.
8. The places with atmosphere containing dusts, saline or metal
powder.
(5) Mounting multiple units
When mounting multiple units close to each other, the rated
current will be 3 A. Do not apply a current higher than 3 A.
(6) For feedback purpose use devices with contacts capable of
switching micro loads of 24 VDC, 5 mA.
(7) The Safety input OFF signal for T11/T12 (or T23) and T21/T22
terminals must be longer than the response time (10 ms).
Otherwise, the G9SA will be locked out or will not be able to be
started or restarted. Also, a shorter safety input OFF signal might
cause the G9SA to be locked. In this case, all safety inputs must
be turned off or the power supply for G9SA must be off before
restarting the G9SA.
(8) Wiring
1. Use the following to wire the G9SA.
• Stranded wire (Flexible wire): 0.75 to 1.5 mm2
• Solid wire: 1.0 to 1.5 mm2
• Maximum Stripping length: 7 to 8mm
2. The G9SA may malfunction or generate heat.
• Tighten each screw to a torque of 0.78 to 1.18 N·m
3. External inputs connected to T11 and T12 or T21 and T22 of
the G9SA must be no-voltage contact inputs.
4. PE is a ground terminal. When machine is grounded at the
positive, the PE terminal should not be grounded.
(9) This is a class A product. In residential areas it may cause radio
interference, in which case the user may be required to take
adequate measures to reduce interference.
(10) Mounting Expansion units
When an Expansion Unit is being used, remove the connector
cover from the G9SA Master Units and insert the connector of
the Expansion Unit's connector cable. Make sure that the
connector is correctly locked before operating.
15
G9SA
Connector Cover
Resetting Inputs
Do not remove the connector cover of the G9SA-301, G9SA-501,
G9SA-321-T@, or G9SA-TH301 unless an Expansion Unit is being
used.
When only channel 1 of the 2-channel input turns OFF, the safety
output is interrupted. In order to restart when this happens, it is
necessary to turn OFF and ON both input channels. It is not
possible to restart by resetting only channel 1.
Connecting Inputs
If using multiple G9SA models, inputs cannot be made using the
same switch. This is also true for other input terminals.
Incorrect
T11 T12
T11 T12
G9SA
G9SA
Resetting Inputs During OFF Delay Time
The G9SA-321-T@ operates as follows according to the reset mode
when the inputs are to be re-entered during the OFF delay time of the
G9SA-321-T@:
For auto reset, after the OFF delay time has ended, the outputs will
turn OFF, and then the outputs will turn ON again.
For manual reset, after the OFF delay time has ended, the outputs will
turn OFF, and then the outputs will turn ON again when the reset is
input.
Durability of Contact Outputs
Ground Shorts
The G9SA internal circuits have a positive thermistor (TH) built in,
which will detect ground short malfunctions (where S1 and S2 are
grounded) and 1-channel and 2-channel short malfunctions, and cut
off the safety output. If the short breakdown is repaired, the G9SA
automatically recovers.
Applicable Performance Level (PL)
(EN ISO13849-1)
G9SA Safety Relay Units can be applied to PLe/Safety Category 4.
(The OFF-delay output section of G9SA-321-T@/EX031-T@ is
applied to PLd/Safety Category 3.)
The above is provided according to circuit examples presented by
OMRON. Therefore, the above may not apply to all operating
environments.
The applicable safety category is determined from the whole safety
control system. Make sure that the whole safety control system meets
ISO 13849-1 requirements.
Relay with Forcibly Guided Contact durability depends greatly on the
switching condition. Confirm the actual conditions of operation in
which the Relay will be used in order to make sure the permissible
number of switching operations.
When the accumulated number of operation exceeds its permissible
range, it can cause failure of reset of safety control circuit. In such
case, please replace the Relay immediately. If the Relay is used
continuously without replacing, then it can lead to loss of safety
function.
Certified Standards
The G9SA-301/501/321-T@/TH301/EX301/EX031-T@ conform to the
following standards.
• EN standards, certified by DGUV:
EN60947-5-1
EN ISO13849-1: 2008
EN ISO13849-2
GS-ET-20
EN574 (G9SA-TH301 only)
• UL standards: UL508 (Industrial Control Equipment)
• CSA standards: CSA C22.2 No. 14 (Industrial Control Equipment)
• CCC Certification: GB/T 14048.5
16
Terms and Conditions Agreement
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.
Warranties.
(a) Exclusive Warranty. Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship
for a period of twelve months from the date of sale by Omron (or such other period expressed in writing by Omron). Omron
disclaims all other warranties, express or implied.
(b) Limitations. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCTS. BUYER
ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.
Omron further disclaims all warranties and responsibility of any type for claims or expenses based on infringement by the
Products or otherwise of any intellectual property right. (c) Buyer Remedy. Omron’s sole obligation hereunder shall be, at
Omron’s election, to (i) replace (in the form originally shipped with Buyer responsible for labor charges for removal or
replacement thereof) the non-complying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount
equal to the purchase price of the non-complying Product; provided that in no event shall Omron be responsible for warranty,
repair, indemnity or any other claims or expenses 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. Return of any Products by Buyer must be approved in writing by Omron before shipment. Omron Companies shall
not be liable for the suitability or unsuitability or the results from the use of Products in combination with any electrical or
electronic components, circuits, system assemblies or any other materials or substances or environments. Any advice,
recommendations or information given orally or in writing, are not to be construed as an amendment or addition to the above
warranty.
See http://www.omron.com/global/ or contact your Omron representative for published information.
Limitation on Liability; Etc.
OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT LIABILITY.
Further, in no event shall liability of Omron Companies exceed the individual price of the Product on which liability is asserted.
Suitability of Use.
Omron Companies shall not be responsible for conformity with any standards, codes or regulations which apply to the
combination of the Product in the Buyer’s application or use of the Product. At Buyer’s request, Omron will provide applicable
third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself
is not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine,
system, or other application or use. Buyer shall be solely responsible for determining appropriateness of the particular Product
with respect to Buyer’s application, product or system. Buyer shall take application responsibility in all cases.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR IN LARGE
QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS,
AND THAT THE OMRON PRODUCT(S) IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE
OVERALL EQUIPMENT OR SYSTEM.
Programmable Products.
Omron Companies shall not be responsible for the user’s programming of a programmable Product, or any consequence
thereof.
Performance Data.
Data presented in Omron Company websites, catalogs and other materials 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 user must correlate
it to actual application requirements. Actual performance is subject to the Omron’s Warranty and Limitations of Liability.
Change in Specifications.
Product specifications and accessories may be changed at any time based on improvements and other reasons. It is our
practice to change part numbers when published ratings or features are changed, or when significant construction changes are
made. However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers
may be assigned to fix or establish key specifications for your application. Please consult with your Omron’s representative at
any time to confirm actual specifications of purchased Product.
Errors and Omissions.
Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is
assumed for clerical, typographical or proofreading errors or omissions.
2019.7
In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/
(c)Copyright OMRON Corporation 2019 All Right Reserved.
