Omron G9SE-201, G9SE-201-T - Safety Relay Unit Manual

Meanings of Signal Words
The following signal words are used in this manual.

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.

Meaning of Alert Symbols
The following alert symbols are used in this manual.

	Indicates prohibited actions
	Indicates mandatory actions

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 G9SE 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 loss of safety functions. Use appropriate devices referring to the information shown below.

1. Use G9SE within an enclosure with IP54 protection or higher of IEC/EN60529.
2. When ready for wiring, the power source shall be disconnected first. Further, at operating this unit, do not touch the terminals in order to prevent an electrical shock.
3. Do not apply any excessive voltage or current to the input or output circuit the G9SE. Doing so may result in damage to the G9SE or cause a fire.
4. Incorrect wiring may lead to loss of safety function. Wire conductors correctly and verify the operation of G9SE before commissioning the system in which G9SE is incorporated.
5. Do not apply DC voltages exceeding the rated voltages, or AC voltages to G9SE.
6. Use SELV/PELV DC porwer 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 stated in UL 508.

7. The lifetime of G9SE 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. Apply protection circuitry against back electromotive force in case connecting inductive loads to safety outputs.
8. Do not operate the G9SE with flammable or explosive gas. An arc with operation and the heat of relay will cause a fire or an explosion.
9. Do not drop G9SE to the ground or dismantle, repair, modify G9SE, otherwise an electric shock may occur or the G9SE may malfunction. It may lead to loss of its safety functions.
10. Use protective device (Fuse etc.) for short-circuit protection and ground fault protection, otherwise a fire may occur or the G9SE may malfunction.
11. 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 G9SE and its relevant system.
12. After installation of G9SE, qualified personnel shall confirm the installation, and shall conduct test operations and maintenance. The qualified personnel shall be qualified and authorized to secure the safety on each phases of design, installation, running, maintenance and disposal of system.
13. A person in charge, who is familiar to the machine in which G9SE is to be installed, shall conduct and verify the installation.
14. Perform daily and 6-month inspections for the G9SE. Otherwise, the system may fail to work properly, resulting in serious injury. Turn OFF the signal to Safety input and make sure G9SE operates without fault by checking the state of the LED indicator in inspection.
15. Conformity to requirements of performance level is determined as an entire system. It is recommended to consult a certification body regarding assessment of conformity to the required safety level.
16. OMRON shall not be responsible for conformity with any safety standards regarding to customer's entire system.
17. Dispose of the Units according to local ordinances as they apply.

1. Handle with care
   Do not drop G9SE to the ground or expose to excessive vibration or mechanical shocks. G9SE may be damaged and may not function properly.
2. Adhesion of solvent such as alcohol, thinner, trichloroethane or gasoline on the product should be avoided. Such solvents make the marking on G9SE illegible and cause deterioration of parts.
3. 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 55 ℃
   3. At relative humidity out of the range of 25% to 85% or under such temperature change that causes condensation.
   4. At atmospheric pressure out of the range 86 to 106 kPa.
   5. In corrosive or combustible gases
   6. With vibration or mechanical shocks out of the rated values.
   7. Under splashing of water, oil, chemicals
   8. In the atmosphere containing dust, saline or metal powder and other conductive dusts. G9SE may be damaged and may not function properly
4. At least 50 mm above top face of G9SE and below bottom face of G9SE should be available to apply rated current to outputs of G9SE and for enough ventilation.
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. If the output current is 3 A or more, make sure that there is a minimum distance of 10mm each between all adjacent G9SE units.
6. DIN rail mounting Mount G9SE 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 G9SE.
7. Wire correctly according to Wiring.
8. Use cables with length less than 100 m to connect to Safety Inputs, Feed-back/Reset inputs, respectively.
9. G9SE may malfunction due to electro-magnetic disturbances. Be sure to connect the negative terminal of DC power supply to ground. When using a DC power supply with light curtains, use DC power supply which has no interruption by a power failure of 20 ms.
10. 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.
11. Do NOT mix AC load and DC load to be switched in the following terminals.

• G9SE-201: between 13-14 terminal and 23-24 terminal
• G9SE-401: between 13-14 terminal and 23-24 terminal, 33-34 terminal and 43-44 terminal
• G9SE-221-T : between 13-14 terminal and 23-24 terminal, 37-38 terminal and 47-48 terminal

12. Start entire system after more than 2s have passed since applying supply voltage to G9SE.
13. Set the time duration of OFF-delay (Type G9SE-221-T)
14. To determine safety distance to hazards, take into account the delay of Safety outputs caused by the following time:
    1. Response time
    2. Preset off-delay time and accuracy of off-delay time

15. Before G9SE outputs become in ON-state, non-regular selfdiagnosis for Safety output circuit may be executed. On this occasion, the operating noise of internal relays occurs.
16. In the place subjected to strong vibration or shock, mount G9SE to a mounting surface with screws and the screw mounting attachment. Otherwise, G9SE may not function properly due to vibration or mechanical shocks out of the rated values caused by sympathetic vibration of G9SE and the mounting parts, and so on.
    

Appearance and Explanation of Each Parts

• LED Indicators

• Preset Switches (only applies to Type G9SE-221-T)
  Change the value of the preset switches only when G9SE is disconnected from power supply.

(*1)Set both of the two Off-delay Time Preset Switches, one each on the front and back, to the same value. When setting the different value, it is detected as a fault.

(*2)See following illustration for setting position of Off-delay Time Preset Switch. Make sure that the direction of cutting edge of preset switch is correctly pointed to the off-delay time value which must be set.

Ratings and Specifications

Ratings

Specifications and performance

Note:

1. Power consumption of loads not included.
2. This does not include the bounce time of internal relay in the G9SE.
3. This is in normal operation. When executing non-regular self-diagnosis for Safety output circuit, G9SE operating time become 500 ms max..
4. This is initial value using the voltage-drop method with 1A at 5VDC.
5. Use for each contact output an 8A fuse that conforms to IEC 60127 as a short-circuit protection device. This fuse is not included with the G9SE.
6. Condition: G9SE is mounted to mounting surface with screw and the screw mounting attachment.
   In the case of DIN rail mounting, mount DIN rail with G9SE to the place without big vibration. (Amplitude guideline: Less than 0.15 mm half amplitude (0.3 mm double amplitude))

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 to the A1 terminal. Connect the power supply minus to the A2 terminal.
Safety input 1	T11, T12	To set Safety outputs in ON state, HIGH state signals must be input to both of Safety input 1 and Safety input 2. Otherwise Safety outputs cannot be in ON state.	1-channel Safety input
			2-channel Safety input
Safety input 2	T21, T22
Reset/ Feedback input	T31, T32, T33	To set Safety outputs in ON state, ON state signal must be input to T33. Otherwise Safety outputs cannot be in ON state. (See Note1)	Auto reset
		To set Safety outputs in ON state, the signal input to T32 must change from OFF state to ON state, and then to OFF state. Otherwise Safety outputs cannot be in ON state.	Manual reset
Safety output	13-14, 23-24, 33-34, 43-44,	Turns ON/OFF according to the state of safety inputs, Feedback/Reset inputs. During off-delay state, safety outputs are not able to turn ON.	Keep these outputs Open when NOT used.
Offdelayed Safety output	37-38, 47-48	Off-delayed safety outputs. (See Note2) Off-delay time is set by off-delay preset switch. When the delay time is set to zero, these outputs can be used as instantaneous outputs.	Keep these outputs Open when NOT used.
Auxiliary output	X1	Outputs a signal of the same logic as Safety outputs	Keep these outputs Open when NOT used.

1. Construct the safety system taking into account that in the Auto reset mode Safety outputs turn ON automatically when Safety inputs 1 and 2 turn ON.
2. When the inputs of G9SE-221-T are restored during off-delay time, G9SE-221-T will operate as below. Depending on the reset mode.

• Auto reset mode: Outputs turn off after off-delay time, then immediately turns on.
• Manual reset mode: Outputs turn off after off-delay time, then turn on when reset input is given.

Connecting Safety Sensors and G9SE

In many case, Safety Sensor outputs include the off-shot pulse for its self test.

The following condition of test pulse is applicable as safety inputs for G9SE.

• Off-shot pulse width of the sensor, during the ON-state: 640 μs
  

Terminal arrangement and LED indicators

Examples of application

Performance level and safety category (EN ISO13849-1)

In the conditions shown in 'Examples of Application', G9SE can be used for the corresponding safety categories up to 4 and performance level(PL) up to e per ISO13849-1.

This does NOT mean that G9SE can always be used for the required category under all the similar conditions and situations.

Conformity to the categories must be assessed as a whole system.

When using G9SE for the safety categories, make sure the conformity of the whole system.

1. Input the signals to both of the Safety inputs (T12 and T22)
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. And wiring must be done in a way that a short circuit between the wires of Safety input can be prevented.
3. When connecting a Safety sensor with G9SE, use a TYPE 4 safety sensor.
4. Be sure to connect the negative terminal of DC power supply to ground.
5. Use two Safety outputs (e.g. 13-14 and 23-24) to construct the system.
6. In order to ensure sufficient failure detection, it is mandatory to use G9SE only together with contactors or relays with forcibly guided contacts.
7. Input the signal through NC contacts of the contactors to Feedback/Reset input (T31-T32 for manual reset or T31-T33 for auto reset). (Refer to 'Examples of Application'.)

Fault Detection

When G9SE detects a fault, LED indicators blink to show the information of the fault.

When PWR indicator blinks, check and take needed measures referring to the following table. And then

LED indicator					Expected causes of the faults	Checking points and measures to take
PWR	IN1	IN2	OUT OUT1	OUT2
Blink	Blink	-	-	-	Failures involving the wiring of Safety input 1 Failures of the parts of the circuits of Safety input 1.	Check the wiring to T11 and T12. Replace with a new product.
	-	Blink	-	-	Failures involving the wiring of Safety input 2 Failures of the parts of the circuits of Safety input 2.	Check the wiring to T21 and T22. Replace with a new product.
	Safety inputs: ON-state				Failures involving the wiring of Feedback/Reset input. Failures of the parts of the circuits of Feedback/Reset input.	Check the wiring to T31, T32, and T33 Replace with a new product.
	Light up	Light up	-	-
	Safety inputs: OFF-state				Failures of the parts or relays of the circuits of Safety Output.	Replace with a new product.
	Light off	Light off	-	-
	-	-	Blink	Blink	Mismatch of the two Off-delay Time Preset Switches.	Check both of the two Off-delay Time Preset Switches.
	-	-	-	Blink
	The all indicators Blink				Supply voltage outside the rated value.	Check the supply voltage to G9SE.
	The all indicators Light off				By excessive electro-magnetic disturbance. Failures of the parts of internal circuits	Check the disturbance level around G9SE and its related system. Replace with a new product.

When indicators other than PWR indicator blink while PWR indicator lights up, check and take needed measures referring to the following table. After removing the fault, turn both safety inputs to OFF state.

LED indicator					Expected causes of the faults	Checking points and measures to take
PWR	IN1	IN2	OUT OUT1	OUT2
Light up	Safety inputs: ON-state
	Blink Blink Light off	Blink Light off Blink	-	-	Mismatch between Safety input 1 and Safety input 2. (OFF timing)	Check the wiring from safety input devices to G9SE. Or check the inputs sequence of safety input devices.

Wiring

Use the following to wire to G9SE.

• Solid wire: AWG24 to AWG16 (0.25 to 1.5 mm²)
• Stranded wire: AWG24 to AWG16 (0.25 to 1.5 mm²)

Strip the cover of wire no longer than 8 to 10 mm

When using stranded wire, insulated ferrule should be used. Use below insulated ferrule.

But do not use ferrule terminals if G9SE is used as UL Listing. Insert the strand or solid wire(CU only) directly into the holes on the terminal block.

• Insulated ferrule: AWG24 to AWG16 (0.25 to 1.5 mm²)
• Crimp height(H): 2.0 mm max.
  Width(W): 2.7 mm max.
  Conductor length: 8 to 10 mm
  When using the twin type ferrule, use equal-sized wires and preferred insulated ferrule.
  The twin type ferrule should not be above the adjoining release hole.

Recommended insulated ferrule: manufactured by Phoenix contact

How to insert solid wire and insulated ferrule

The wire should be pushed into the terminal block straight. No need to use the driver. After inserting, make sure wire is fastened on to terminal block.

How to release wire

Use the following minus drive to release wire from terminal block.

And When releasing wire, the power source should be disconnected first.

1. Push the driver lightly into the taper of release hole.
2. Pull out the wire while the driver is pushed into release hole.
3. Pull out the driver.
   
   

Recommended driver:
Type SZF0-0.4mmx2.5mm manufactured by Phoenix contact
Type XW4Z-00B manufactured by Omron

Precautions for Correct wiring

Terminal block may be damaged.

1. Not push the driver into the release hole straight.
2. Not push the driver into the release hole by force of 30N and over.
3. Not tip or twist the driver pushed into release hole.

Contact: www.ia.omron.com

Note: Specifications subject to change without notice.