
Flexible Safety Unit
Type G9SX-EX401-
Type G9SX-EX041-T-
USER'S MANUAL
Safety Precautions
Indicates a potentially hazardous situation
which, if not avoided, will resultin minor or
moderate injury, or may result in serious
injury or death.
Additionally there may be signicant
property damage.
Meanings of Signal Words
The following signal words are used in this manual.
Alert Statements
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 inductiveloads to safety outputs.
Serious injury may possibly occur due to loss of safety
functions.
Use devices appropriate for the application andthe
condition where G9SX is used.
Indicates prohibited actions
Meaning of Alert Symbols
The following alert symbols are used in this manual.
Indicates mandatory actions
WARNING
WARNING
(1) Use G9SX within a enclosure with IP54 protection or higher of IEC/EN60529.
(2) Incorrect wiring may lead to loss of safety function. Wireconductors
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, nor any AC voltages
to G9SX. Do not connect to DC distribution network.
(4) Use DC supply satisfying requirements below to prevent electric shock.
- DC power supply with double or reinforced insulation, for example,
according to IED/EN60950 or EN50178 or a tranceformer according to
IEC/EN61558.
- DC supply used satises the requirement for class 2 circuits or limited
voltage/current circuit stated in UL 508.
(5) Auxiliary error output is NOT safety outputs.
Do not use auxiliary error output as any safety output.
Such incorrect use causes loss of safety function of G9SX andits relevant
system.
(6) After installation of G9SX, qualied personnel should conrm the
installation, and should conduct test operations and maintenance.
The qualied personnel should be qualied and authorized to secure the
safety on each phases of design, installation, running, maintenance and
disposal of system.
(7) A person in charge, who is familiar to the machine in which G9SX is to be
installed, should conduct and verify the installation.
(8) 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.
(9) Do not dismantle, repair, or modify G9SX. It may lead to loss of its safety
functions.
(10) 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 certication body regarding assessment of
conformity to the required safety level.
(11) OMRON shall not be responsible for conformity with any safety standards
regarding to customer's entire system.
(12) Disconnect G9SX from power supply when wiring, to prevent electric
shock or unexpected operation.
(13) Be cautious not to have your ngers caught when attaching terminal
sockets to the plugs on G9SX.
(14) 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
(15) Do not use in combustible gases or explosive gases. Arcs or heat generated
by switching elements of G9SX can lead to re or explosion.
Precaution for Safe 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.
1) In direct sunlight
2) At ambient temperatures out of the range of -10 to 55ºC
3) At relative humidity out of the range of 25 to 85% or under such
temperature change that causes condensation.
4) In corrosive or combustible gases
5) With vibration or mechanical shocks out of the rated values.
6) Under splashing of water, oil, chemicals
7) In the atmosphere containing dusts, 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.
Precautions for Correct Use
(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 G9SX.
b) At least 50 mm above top face of G9SX and below bottom face of G9SX.
c) At least 25 mm between side face of Advanced unit (G9SX-
AD322--) and side face of Expansion unit (G9SX-EX401-or
G9SX-EX041-T-).
(5) Wiring
1) For model G9SX-
Use the following to wire to G9SX-.
- Solid wire: 0.2 to 2.5mm2AWG24 to AWG12
- Stranded wire (Flexible wire): 0.2 to 2.5mm2AWG24 to AWG12
Strip the cover of wire no longer than 7mm.
2) For model G9SX--RT (with screw terminals)
Tighten each screw with a specied torque of 0.5 to 0.6N·m, or
the G9SX-may malfunction or generate heat.
(6) When connecting Expansion Units to Advanced Unit
(TYPE G9SX- AD322--):
1) Follow the procedure below:
a) Remove the termination connector from the receptacle on Advanced
Unit (TYPE G9SX-AD322--),
b) Insert the head of the connecting cable of Expansion Unit to the
receptacle on the Advanced Unit
c) Set the termination connector to the receptacle on the
Expansion Unit at the end position. When Advanced Unit is used as
without expansion units, leave the terminination connector set on the
Advanced Unit.
2) Do not remove the termination connecter while the system is operating.
3) Before applying supply voltage, conrm that the connecting sockets and
plugs are locked rmly.
4) All of the Expansion Units should be supplied with its specied 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) Start entire system after more than 5s have passed since applying supply
voltage to all G9SXs in the system.
(8) G9SX may malfunction due to electro-magnetic disturbances.
Be sure to connect the terminal A2 to ground.
(9) Devices connected to G9SX may operate unexpectedly.
When replacing G9SX, disconnect it from power supply.
(10) 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.
(11) Do NOT mix AC load and DC load to be switched in one G9SX-EX-.
When switching of both AC load and DC load is ncessary, connect more
than two G9SX-EX-and use each unit for AC load and DC load exclusively.
(12)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.
25mm min. 25mm min.
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
24VDC
No.
T1 T2
FB
ERREI
PWB
L2L1S24S14
A2X2T22T21
A1X1T12T11
Y1T32 T33T31
No.
OFF-DELAY
0.5
0.4
0.3
0.2 15107
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
50mm min.50mm min.
Appearance and Explanation of Each Parts
1
TYPE G9SX-EX041-T-TYPE G9SX-EX401-
(Expansion Unit) (Expansion Unit: O-delay Model)
TYPE G9SX-EX041-T-TYPE G9SX-EX401-
(Expansion Unit) (Expansion Unit: O-delay Model)
EI
PWR
A2X2
44342414
A1
33 4313 23
No.
G9SX
-
EX401
24VDC
ED
PWR
A2X2
44342414
A1
33 4313 23
No.
G9SX
-
EX041-T
24VDC
Power Supply Input
terminal (+)
Power Supply Input
terminal (-)
Auxiliary Error
output terminal
Auxiliary Error
output terminal
Safety relay contact
output terminals
Safety o-delay
relay contact
output terminals
Safety o-delay
relay contact
output terminals
Safety relay contact
output terminals
43332313
PWR
44
A2
14 24
A1
34
X2
EI
ERR
Terminal arrangement and LED indicators
Power Supply Input
terminal (+) Power Supply Input
terminal (-)
LED Indicators
Connect the power supply
plus to the A1 terminal.
Connect the power supply
minus to the A2 terminal.
The outputs synchronize
with safety outputs of
Advanced unit.
Outputs during error
indicator is lighting up.
Wiring of inputs and outputs
Signal
name
Safety
relay
output
Power
supply
input
Terminal
name
13-14,
23-24,
33-34,
43-44
A1,
A2
Auxiliary
error
output
X2
Wiring
Description of operation
The input terminals
for power supply.
Connect the power
source to A1 and A2
terminals.
Keep these outputs Open
when NOT used.
Keep these outputs Open
when NOT used.
TYPE G9SX-EX401-/ TYPE G9SX-EX041-T-
Internal Connection
2
A2 X2
Power
supply
circuit
Auxiliary
outputs
control
Safety
outpus
control
A1
K1
13 23 33 43
14 24 34 44
K2
Exp.
sig.
IN
Exp.
sig.
OUT
*1 Internal power supply circut is not isolated.
*2 Relay outputs are isolated
*1
*2
Dimensions
3
*Note2 *Note2
100 max.
(6) (6)
115 max.
23 max.
*Note1 Above outline drawing is for -RC terminal type.
*Note2 For -RC terminal type only.
(22.5)*
* Typical dimension
Ratings and Specications
4
Ratings
Endurance
Outputs
Rated supply voltage
Electrical
endurance
5,000,000 cycles Min.
(Switching frequency: 7,200 cycles/hour)
Isolation specification
Item
Note1: Not including Operating time or Response time of G9SX-AD322--(Advanced Unit).
Note2: Not including accuracy of release time of the relays.
Note3: O-delay time setting is applied from Advanced Unit.
PNP transistor output,
Load current: 100mA Max.
Auxiliary output
Specifications and Performance
Item
Over voltage category (IEC/EN 60664-1)
G9SX-EX401-G9SX-EX041-T-
II (safety relay outputs 13 to 43, 14 to 44 : III)
Operating time (OFF to ON state) (See Note1) 30ms Max.
10ms Max.
Maximum number of connectable units
5 units Max. (Both G9SX-EX401-and G9SX-EX401-T-can be connected in the same system.)
Accuracy of O-delay time (See Note2)
-
Within plus or minus 5%of the set value (See Note3)
G9SX-EX401-/G9SX-EX041-T-
24VDC
-15% to +10% of rated supply voltage
2W Max.
250VAC 3A / 30VDC 3A
(resistive load)
3A
250VAC , 125VDC
Vibration resistance
Frequency: 10 to 55 to 10 Hz, Amplitude: 0.375mm half amplitude (0.75mm double amplitude)
Mechanical shock resistance 300 m/s2(destruction), 100m/s2(malfunction)
Ambient temperature -10 to +55°C(No freezing or condensation)
Ambient humidity 25
~
85%RH
Terminal tightening 0.5 Nm (Applicable only to TYPE G9SX--RT:screw terminal model)
Weight Approx. 145 g
100Mohm Min. (by 500VDC megger)
Insulation resistance
Dielectric strength
1200VAC 1min
2200VAC 1min
Between all terminals connected together and DIN rail
Between dierent poles of outputs
Between Safety relay outputs connected together
and other terminals connected together.
Between all terminals connected together and DIN rail
Between dierent poles of outputs
Between Safety relay outputs connected together
and other terminals connected together.
Response time (ON to OFF state) (See Note1)
Off-delay time
KM1,KM2 NC contact
KM3
~
KM6 NC contact
KM1,KM2 NO contact
KM3
~
KM6 NO contact
Operation command
Rotation of motor
S14
A2
S24 S34 S44 S54
L1 X1 X2
T11
A1
T12 T21 T22 T31 T32 T33
Y1
T41 T42
KM2
KM6
KM1
+24V +24V
Feedback Loop
+24V
KM1 KM5 KM6KM3 KM4
Limit switch S2
Safety limit switch S1
Operation
command
M1
KM2
KM1
M3
KM6
KM5
M2
KM4
KM3
Motor controller
OFF
AND
PLC etc.
Timing chart
open
23
24
11
12
S2
S1
S1
S2
KM1 ~ KM6
M1
~
M3
:Safety limit switch
:Limit switch
:Contactor
:3-phase motor
Devices
G9SX-AD322-G9SX-EX041-T
Control circuit Control
circuit
NC NC NC
A2 X2
A1
K1
13 23 33 43
14 24 34 44
K2
Note1: This example is corresponding to category 4 (EN ISO 13849-1)
S34
Examples of application
5
Application and timing chart
Performance Level and Safety category
of EN ISO 13849-1
6
The G9SX can be used up to PL =e and Category 4 required by EN ISO
13849-1 European standard. Refer to the following link for the Safety-relay
characteristic data:
http://www.fa.omron.co.jp/safety_6en/
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, make sure the conformity of the
whole system.
For use of Safety category 4, fuses of 3.15A current rating should be
connected to safety relay outputs to prevent welding of the contacts.
Fault Detection
7
ERR
indicator
Light up
Conditions Expected causes
of the faults
Replace with a
new product.
When G9SX detects a fault, ERR indicator lights up to show the information of
the fault.
Check and take needed measures referring to the following table.
And then apply supply voltage to G9SX.
English
EU Declaration of Conformity
Standards
OMRON declares that G9SX is in conformity with the
requirements of the following EU Directives:
- EMC Directive 2014/30/EU
- Machinery Directive 2006/42/EC
G9SX is designed and manufactured in accordance with the
following standards:
- EN ISO13849-1:2015 Category 4 PL e,
- IEC/EN61508 SIL3,
- IEC/EN61000-6-2, - IEC/EN61000-6-4,
- UL508, - UL1998,
- CAN/CSA C22.2 No.142
Original instructions
Thank you for purchasing G9SX Flexible Safety Unit.
Please read and understand this manual before using the products.
Keep this manual ready to use whenever needed.
Only qualied person trained in professional electrical technique
should handle G9SX.
Please consult your OMRON representative if you have any
questions or comments.
Make sure that information written in this document are delivered to
the nal user of the product.
Marking FunctionNameColor
PWR Lights up while power is supplied.
Power Supply
Indicator
Green
ERR Lights up when an error occurs.
For details refer to
'7. Fault Detection'.
Error IndicatorRed
EI Lights up while Safety relay
outputs are in ON-state.
Safety Output
Indicator
Orange
ED Lights up while O-delayed
relay outputs are in ON-state.
O-delayed Safety
Output Indicator
Orange
(Expansion Unit / Expansion Unit off-delay model)
43332313
PWR
44
A2
14 24
A1
34
X2
ED
ERR
Item
Power
input Operating voltage
range
Rated carry current
Rated power
consumption
Maximum switching
voltage
Rated load
G9SX-EX401-/G9SX-EX041-T-
100,000 cycles Min.
(Rated load, Switching frequency: 1,800 cycles/hour)
Item
Mechanical
endurance
G9SX-EX401-/G9SX-EX041-T-
G9SX-AD322-(24VDC) + G9SX-EX041-T (24VDC)
(2-channel safety limit switch inputs / Auto reset)
Faults involved with
Safety relay outputs
of Expansion Units
Expected causes
of the faults
1) Welding of relay
contacts
2) Failures of the
parts of the
internal circuits
KM2
Suitability for 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 certication documents identifying ratings and
limitations of use which apply to the Product. This information by itself is not
sucient 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.
OMRON Corporation (Manufacturer)
Contact: www.ia.omron.com
Regional Headquarters
Shiokoji Horikawa, Shimogyo-ku, Kyoto, 600-8530 JAPAN
OMRON EUROPE B.V. (Importer in EU)
Wegalaan 67-69, 2132 JD Hoofddorp
The Netherlands
Tel: (31)2356-81-300/Fax: (31)2356-81-388
OMRON ELECTRONICS LLC
2895 Greenspoint Parkway, Suite 200
Homan Estates, IL 60169 U.S.A.
Tel: (1) 847-843-7900/Fax: (1) 847-843-7787
OMRON ASIA PACIFIC PTE. LTD.
No. 438A Alexandra Road # 05-05/08 (Lobby 2),
Alexandra Technopark,
Singapore 119967
Tel: (65) 6835-3011/Fax: (65) 6835-2711
OMRON (CHINA) CO., LTD.
Room 2211, Bank of China Tower,
200 Yin Cheng Zhong Road,
PuDong New Area, Shanghai, 200120, China
Tel: (86) 21-5037-2222/Fax: (86) 21-5037-2200
2139837-8 C
© OMRON Corporation 2005-2020 All Rights Reserved.