Omron G9SA DATASHEET
Safety Relay Unit
G9SA
• Four kinds of 45-mm wide Units are
available:
A 3-safety contact model, a 5-safety
contact model, and models with 3 safety contacts and 2 OFF-delay safety
contacts.
Also available are 17.5-mm wide Expansion Units with 3 safety contacts
and 3 OFF-delay safety contacts.
• Two hand controller (type III C, EN 574)
• Simple expansion connection.
• OFF-delay models have 15-step OFFdelay settings.
• Conforms to EN standards. (BG approval)
• Approved by UL and CSA.
• Both DIN track mounting and screw
mounting are possible.
• Suitable for PNP OSSD outputs of
safety sensors, F3SN, F3SH, F3S-B,
F3S-TGR, F3SL
The G9SA Series Offers a Complete
Line-up of Compact Units.
Ordering Information
Emergency-stop Units
Main contacts Auxiliary contact Number of input channels Rated voltage Model Category
3PST-NO SPST-NC 1 channel or 2 channels possible
5PST-NO SPST-NC 1 channel or 2 channels possible
Emergency-stop OFF-delay Units
Main contacts
3PST-NO DPST-NO SPST-NC
Note: 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 Rated voltage Model Category
3PST-NO SPST-NC 2 channels
Expansion Unit
The Expansion Unit connects to a G9SA-301, G9SA-501, G9SA-
Main contacts Auxiliary contact Model Category
OFF-delay
contacts
3PST-NO SPST-NC G9SA-EX301 4
Auxiliary
contact
Number of
input channels
1 channel
or 2 channels
possible
OFF-delay
time
7.5 s
15 s
30 s
24 VAC/VDC
100 to 240 VAC
24 VAC/VDC
100 to 240 VAC
Rated voltage Model Category
24 VAC/VDC
100 to 240 VAC
24 VAC/VDC
100 to 240 VAC
24 VAC/VDC
100 to 240 VAC
24 VAC/VDC
100 to 240 VAC
321, or G9SA-TH301.
G9SA-301
G9SA-501
G9SA-321-T075
G9SA-321-T15
G9SA-321-T30
G9SA-TH301 4 (IIIc, EN574)
Main contacts:
4
4
OFF-delay
contacts:
3
G9SA
G-109G9SA
Expansion Units with OFF-delay Outputs
The Expansion Unit connects to a G9SA-301, G9SA-501, G9SA-321, or G9SA-TH301.
Main contact form Auxiliary contact OFF-delay time Model Category
7.5 s G9SA-EX031-T075
3PST-NO SPST-NC
30 s G9SA-EX031-T30
Note: 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
Model Number Legend
315 s G9SA-EX031-T15
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 (for G9SA-301/501/321)
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
G-110 Safety Sensors / Components
Specifications
Ratings
Power Input
Item G9SA-301/TH301 G9SA-501 G9SA-321-T#
Power supply voltage
Operating voltage range 85% to 110% of rated power supply voltage
Power consumption
(See note.)
Note: When an Expansion Unit is connected, the power consumption is increased by 2 VA/2 W max.
Inputs
Item G9SA-301/321-T#/TH301 G9SA-501
Input current (See note.) 40 mA max. 60 mA max.
Note: When an Expansion Unit is connected, the input current is increased by 30 mA max.
Contacts
Item
Rated load 250 VAC, 5 A
Rated carry current 5 A
Characteristics
Item G9SA-301/TH301 G9SA-501/321-T# G9SA-EX301/EX031-T#
Contact resistance (see note 1) 100 mΩ
Operating time 30 ms max. (not including bounce time)
Response time (see note 2) 10 ms max. (not including bounce time)
Insulation resistance (see note 3) 100 MΩ min. (at 500 VDC)
Between different outputs
Dielectric
strength
Vibration resistance 10 to 55 Hz, 0.75-mm double amplitude
Shock
resistance
Durability
Minimum permissible load (reference value) 5 VDC, 1 mA
Ambient temperature
Ambient humidity
Terminal tightening torque 0.98 N·m
Weight (see note 4) Approx. 210 g Approx. 270 g
Approved standards EN954-1, EN60204-1, EN574 (-TH301), UL508, CSA C22.2 No. 14
EMC
Between inputs and outputs
Between power inputs and outputs
Between power inputs and other inputs
(only for 100 to 240-V models)
Destruction 300 m/s
Malfunction 100 m/s
Mechanical 5,000,000 operations min. (at approx. 7,200 operations/hr)
Electrical 100,000 operations min. (at approx. 1,800 operations/hr)
24 VAC/VDC:24 VAC, 50/60 Hz, or 24 VDC
100 to 240 VAC:100 to 240 VAC, 50/60 Hz
24 VAC/VDC: 1.8 VA/1.7 W max.
100 to 240 VAC: 9 VA max.
G9SA-301/501/321-T#/TH301/EX301/EX031-T#
Resistive load (cos φ =1)
2,500 VAC, 50/60 Hz for 1 min
Operating:-25°C to 55°C (with no icing or condensation)
Storage:-25°C to 85°C (with no icing or condensation)
Operating:35% to 85%
Storage:35% to 85%
EMI: EN55011 group 1 class A
EMS: EN50082-2 group 1
24 VAC/VDC: 2.8 VA/2.6 W max.
100 to 240 VAC: 11 VA max.
2
2
24 VAC/VDC: 3.5 VA/3.3 W max.
100 to 240 VAC: 12.5 VA max.
Approx. 130 g
G9SA
Note: 1. The contact resistance was measured with 1 A at 5 VDC using the voltage-drop method.
2. The response time is the time it takes for the main contact to open after the input is turned OFF.
3. The insulation resistance was measured with 500 VDC at the same places that the dielectric strength was checked.
4. Weight shown is for 24-VAC/VDC type. For 100 to 240-VAC type, add approximately 20 g.
G-111G9SA
Application Examples
G9SA-301 (24 VAC/VDC) with 2-channel Limit Switch Input/Auto-reset
Feedback loop
Open
Timing Chart
Limit switches
S1 and S2
K1 and K2
(NC)
K1 and K2
(NO)
KM1 and KM2
(NC)
KM1 and KM2
(NO)
Control
circuit
G9SA-301 (24 VAC/VDC) with 2-channel Limit Switch Input/Manual-reset
Feedback loop
Open
S1: Safety Limit Switch
with direct opening mechanism
(D4N or D4B)
S2: Limit switch
KM1 and KM2: Magnetic Contactor
M: 3-phase motor
Note: This circuit achieves EN954-1
Safety Category 4.
Timing Chart
Limit switches
S1 and S2
Reset switch
S3
K1 and K2
(NC)
K1 and K2
(NO)
KM1 and KM2
(NC)
KM1 and KM2
(NO)
PC input
PC output
KM3
Control
circuit
S1: Safety Limit Switch
S2: Limit switch
S3: Reset switch
KM1 and KM2: Magnetic Contactor
KM3: Solid-state Contactor
M: 3-phase motor
with direct opening mechanism
(D4N or D4B)
Note: This circuit achieves EN954-1
Safety Category 4.
G-112 Safety Sensors / Components
G9SA-301 (100 to 240 VAC) with 2-channel Limit Switch Input/Auto-reset
Limit switches
S1 and S2
K1 and K2
(NC)
K1 and K2
Feedback loop
Open
(NO)
KM1 and KM2
(NC)
KM1 and KM2
(NO)
Timing Chart
Control
circuit
S1: Safety Limit Switch
with direct opening mechanism
(D4N or D4B)
S2: Limit switch
KM1 and KM2: Magnetic Contactor
M: 3-phase motor
Note: This circuit achieves EN954-1
Safety Category 4.
G9SA-301 (24 VAC/VDC) with 2-channel Emergency Stop Switch Input/Manual-reset
Timing Chart
Emergency
stop switch S1
Reset switch
S2
Feedback loop
K1 and K2
(NC)
K1 and K2
(NO)
KM1 and KM2
(NC)
KM1 and KM2
(NO)
PC input
PC output
KM3
Control
circuit
S1: Emergency stop switch
with direct opening mechanism
(A165E or A22E)
S2: Reset switch
KM1 and KM2: Magnetic Contactor
KM3: Solid-state Contactor
M: 3-phase motor
Note: This circuit achieves EN954-1
Safety Category 4.
G9SA
G-113G9SA
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