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Stepping Relay Unit
G9B
CSM_G9B_DS_E_3_2
Ideal for Controlling Pumps and Production
Lines with Six or Twelve Stepping Circuits
• Built-in relays switch 2 A at 250 VAC or 30 VDC.
• Initialization of stepping with reset input.
• Uses memory that stores setting status for 10 days without
power. All internal contacts are released when no power is
supplied.
• Detects an internal element malfunction caused by external
noise, indicates the malfunction with an alarm indicator, and
turns the relay alarm output ON. (An internal relay malfunction
or internal relay contact weld cannot be detected.)
• With safety-design terminals which prevent electric shock
accidents.
• With easy-to-see indicators which display the stepping status.
Refer to Safety Precautions for All Relays.
Ordering Information
When your order, specify the rated voltage.
No. of steps
6
Model
G9B-06
Rated voltage
24 VDC
100 VAC
200 VAC
12
G9B-12
24 VDC
100 VAC
200 VAC
Note: When ordering specify the voltage.
Example: G9B-06 24 VDC
Rated voltage
Model Number Legend
G9B-@
1
1. No. of steps
06:
6 steps
12:
12 steps
1
G9B
Specifications
■ Contact Ratings
Load
Resistive load (cosφ = 1)
Rated load
2 A at 250 VAC/30 VDC
Rated carry current
2A
Max. switching voltage
250 VAC, 30 VDC
Max. switching current
2A
■ Characteristics
Operating voltage range
85% to 110% of rated voltage
Power consumption
24 VDC:90 mA max.
100 or 200 VAC:120 mA max.
Contact resistance (See note 2.)
100 mΩ max.
Operate time (See note 3.)
50 ms max.
Release time (See note 3.)
50 ms max.
Min. pulse time (See note 4.)
100 ms max.
Error detecting time
100 ms max.
Insulation resistance (at 500 VDC)
100 MΩ min. between the power supply, control, output, and R terminals
100 MΩ min. between the terminals, except the alarm output terminals and power output terminals
Dielectric strength
1,500 V, 50/60 Hz for 1 min between the power supply, control, output, and R and other terminals
1,500 V, 50/60 Hz for 1 min between the terminals, except the alarm output terminals and power output
terminals
Noise immunity
Noise level:
1.5 kV, pulse width: 50 ns/1 µs (600 V for 24-VDC model)
Vibration resistance
Destruction:
Malfunction:
10 to 55 to 10 Hz, 0.75-mm single amplitude (1.5 mm double amplitude)
10 to 55 to 10 Hz, 0.75-mm single amplitude (1.5 mm double amplitude)
Shock resistance
Destruction:
Malfunction:
500 m/s2
200 m/s2
Endurance
Mechanical:
Electrical:
10,000,000 steps min.
300,000 steps min. (See note 5.)
Error rate (See note 6.)
10 mA at 5 VDC
Ambient temperature
Operating:
–25°C to 55°C (with no icing or condensation)
Ambient humidity
Operating:
5% to 85%
Terminal strength
Tightening torque: 0.98 N·m
Tensile strength: 49 N
Weight
Twelve-step model: approx. 450 g; Six-step model: approx. 400 g
Note: 1. The data shown above are initial values.
2. The contact resistance was measured with 0.1 A at 5 VDC using the fall-of-potential method.
3. The operate time and release time was measured with the rated voltage imposed with any contact bounce ignored at an ambient
temperature of 23°C.
4. For the step signal, set a minimum pulse time of 100 ms for both the ON time and OFF time.
5. The electrical endurance was measured at an ambient temperature of 23°C.
6. This value was measured at a switching frequency of 120 operations per minute.
2
G9B
Nomenclature
Power supply Alarm output
terminals
terminals
Control terminal
(common)
Control terminals
01 to 06
Control terminal
operation indicator
LED indicators
Control terminals 07 to 12
(These terminals of the G9B-06,
which incorporates six stepping
circuits, are not used.)
DIN track mounting hook
Stepping signal input terminals
Reset signal input terminals.
Display
Description
POWER
Lit
Lit when power is supplied to the G9B and the G9B is ready to operate or in operation.
Not lit
Not lit when power is not supplied to the G9B.
ALARM
Lit
Lit when there is a control contact error (i.e., when a built-in relay driving element is malfunctioning).
Not lit
Lit when the G9B is in normal operation.
3
G9B
Operation
■ Timing Chart
Normal Operation with No Reset Signal
Power supply
Step signal
Reset signal
01 contact
02 contact
A different contact is selected in numerical order
per step signal pulse. When the contact currently selected is 06, 01 will be selected with the
next step signal input.
03 contact
04 contact
05 contact
06 contact
Normal Operation with Reset Signal
Power supply
Step signal
Reset signal
01 contact
The G9B switches an active control terminal over to another control terminal and
makes it active whenever the G9B receives a single step input pulse. If a reset signal is input to a control terminal of the G9B when the G9B is in stepping operation,
terminal 1 of the G9B will become active.
02 contact
03 contact
04 contact
05 contact
06 contact
AL contact
Emergency Case (ON Error)
Power supply
Step signal
Reset signal
01 contact
02 contact
If an internal contact of the G9B is incorrectly turned ON by the internal relay
driving element that drives the internal contact due to external noise, the G9B will
reset itself to its default status (i.e., contact 01 of the G9B will be turned ON) and
turn its alarm contact ON so that the ALARM indicator of the G9B will become lit.
When the G9B is turned OFF, the alarm contact will turn OFF and the ALARM
indicator will not be lit. In this example, contact 05 is incorrectly turned ON.
03 contact
04 contact
05 contact
06 contact
AL contact
4
G9B
Emergency Case (ON Error)
Power supply
Step signal
Reset signal
01 contact
02 contact
If an internal contact of the G9B is incorrectly turned OFF by the internal relay
driving element that drives the internal contact due to external noise, the G9B will
reset itself to its default status (i.e., contact 01 of the G9B will be turned ON) when
the internal contact incorrectly turned OFF becomes active. In this example,
contact 05 is incorrectly turned OFF.
03 contact
04 contact
05 contact
06 contact
AL contact
Dimensions
Note: All units are in millimeters unless otherwise indicated.
G9B-06
91 max.
G9B-12
100 max.
76 max.
Nineteen, M3.5
5
G9B
Installation
■ Internal Circuit
■ Input Connections
The inputs of the G9B are no-voltage (short-circuited or open) inputs.
No-contact Input
Contact Input
(+)
(−)
Internal circuit
Power supply circuit
(Connection to NPN open
collector output sensor.)
12 to 24 VDC
(sensor power supply)
Sensor
DC
power
supply
S (step)/
R (reset)
S (step)/
R (reset)
C (input 0 V)
C (input 0 V)
Operates with transistor ON
■ Terminal Arrangement
G9B-06
G9B-12
Operates with relay ON
No-voltage Input Signal Level
No-contact input
1. Short-circuit Level (transistor ON)
Residual voltage:1 V max.
Impedance when ON:1 kΩ max.
2. Open Level (transistor OFF)
Impedance when OFF: 100 kΩ max.
Contact input
Use contacts which can adequately switch
3 mA at 24 VDC
Note: 1. Two-wire sensors cannot be used.
2. When using three-wire sensors, only NPN open-collector
models can be used.
Safety Precautions
Refer to Safety Precautions for All Relays.
■ Memory Backup Function
The G9B has a built-in memory that stores the setting status for
10 days without power. All contacts are released when no power is
supplied. When the G9B is turned ON again, the internal contacts
will be set to the previous setting status.
When power is not supplied, the output contacts will turn OFF. If a
reset signal is input while power is not being supplied, the next step
will be step 01 when power is restored.
When 24 VDC is supplied to the G9B, make sure that the polarity of
the power is correct.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
In the interest of product improvement, specifications are subject to change without notice.
6
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ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE
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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
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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.
2015.10
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 2015 All Right Reserved.
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