Ro le an toan Omron dong G7SB - manual.pdf
Relays with Forcibly Guided Contacts
G7SB
Low Profile Relays with Low Power
Consumption
■ Relays with forcibly guided contacts
(EN50205 Class A, certified by VDE).
■ Low profile - only 14.5 mm.
■ Coil power consumption is 360 mW for 4 pole model or
500 mW for 6 pole model.
■ Four-pole and six-pole Relays are available.
■ The Relay's terminal arrangement simplifies PWB pattern
design.
■ Reinforced insulation
Model Number Structure
Model Number Legend
[email protected]@B
1
2
2. NC Contact Poles
1: SPST-NC
2: DPST-NC
1. NO Contact Poles
2: DPST-NO
3: 3PST-NO
4: 4PST-NO
5: 5PST-NO
Ordering Information
Relays with Forcibly Guided Contacts
Type
Sealing
Poles
4 poles
Standard
Flux-tight
6 poles
Contact configuration
Rated voltage *
3PST-NO, SPST-NC
DPST-NO, DPST-NC
5PST-NO, SPST-NC
4PST-NO, DPST-NC
Model
G7SB-3A1B
24 VDC
G7SB-2A2B
G7SB-5A1B
G7SB-4A2B
Consult your OMRON representative for details on rated voltages of 12 VDC, 18 VDC and 21 VDC.
1
G7SB
Specifications
Ratings
Coil
Item
Rated voltage
Rated current
(mA)
Coil resistance
(Ω)
Must operate
voltage (V)
Must release
voltage (V)
Max.
voltage (V)
Power consumption
(mW)
4 poles: 15
6 poles: 20.8
4 poles: 1,600
6 poles: 1,152
75% max.
10% min.
110%
4 poles: Approx. 360
6 poles: Approx. 500
24 VDC
Note: 1. The rated current and coil resistance are measured at a coil temperature of 23°C with tolerances of ±15%.
2. Performance characteristics are based on a coil temperature of 23°C.
3. The value given for the maximum voltage is for voltages applied Instantaneously to the Relay coil (at an ambient temperature of 23°C) and
not continuously.
Contacts
Item
Load
Rated load
Resistive load
6 A at 250 VAC, 6 A at 30 VDC
Rated carry current
6A
Max. switching voltage
250 VAC, 125 VDC
Max. switching current
6A
Characteristics
Contact resistance *1
100 mΩ max.
Operating time *2
20 ms max.
Response time *3
10 ms max.
Release time *2
20 ms max.
Maximum operating Mechanical
frequency
Rated load
36,000 operations/h
Insulation resistance *4
1,000 MΩ min. (at 500 VDC)
Dielectric strength *5
Between coil contacts/different poles: 3,000 VAC, 50/60 Hz for 1 min.
Between poles 1−2, 2−3, and 3−4: 3,000 VAC, 50/60 Hz for 1 min.
Between poles 4−5 and 5−6 (in 6-pole relays): 2,500 VAC, 50/60 Hz for 1 min.
Between contacts of same polarity: 1,500 VAC, 50/60 Hz for 1 min.
Vibration resistance
10 to 55 Hz, 0.75-mm single amplitude (1.5-mm double amplitude)
Shock resistance
Durability *6
1,800 operations/h
Destruction
1,000 m/s2
Malfunction
100 m/s2
Mechanical
10,000,000 operations min. (at approx. 36,000 operations/h)
Electrical
100,000 operations min. (at the rated load and approx. 1,800 operations/h)
Failure rate (P level)
(reference value *7)
5 VDC, 1 mA
Ambient operating temperature *8 −40 to 85°C (with no icing or condensation)
Ambient operating humidity
5% to 85%
Weight
4 poles: Approx. 25 g
6 poles: Approx. 29 g
Note: The above values are initial values.
*1. The contact resistance was measured with 1 A at 5 VDC using the voltage-drop method.
*2. These times were measured at the rated voltage and an ambient temperature of 23°C. Contact bounce time is not included.
*3. The response time is the time it takes for the normally open contacts to open after the coil voltage is turned OFF. Contact bounce time is
included. Measurement conditions: Rated voltage operation, Ambient temperature: 23°C
*4. The insulation resistance was measured with a 500-VDC megohmmeter at the same locations as the dielectric strength was measured.
*5. Pole 3 refers to terminals 33−34, pole 4 refers to terminals 43−44, pole 5 refers to terminals 53−54, and pole 6 refers to terminals
63−64.
*6. The durability is for an ambient temperature of 15 to 35°C and an ambient humidity of 25% to 75%.
*7. The failure rate is based on an operating frequency of 300 operations/min.
*8. When operating at a temperature between 70 and 85°C, reduce the rated carry current (6 A at 70°C or less) by 0.1 A for each degree above 70°C.
2
G7SB
Dimensions
(Unit: mm)
Relays with Forcibly Guided Contacts
Terminal Arrangement/
Internal Connection Diagram
(Bottom View)
G7SB-3A1B
G7SB-2A2B
25.5 max.
45.0 max.
G7SB-3A1B
14.5 max.
0.50
0.50
0.50
1
0.50
1
1
1
11
23
33
43
12
24
34
44
−
3.50
+
Printed Circuit Board
Design Diagram
(Bottom View)
(±0.1 tolerance)
G7SA-2A2B
Ten, 1.4 dia.
11
21
33
43
12
22
34
44
−
20.32
15.40
(1.73)
18
7.62
7.62
7.62
(2.10)
+
Note: Terminals 23-24, 33-34, and 43-44 are
normally open. Terminals 11-12 and 21-22
are normally closed.
G7SB-5A1B
G7SB-4A2B
Terminal Arrangement/
Internal Connection Diagram
(Bottom View)
25.5 max.
55.1 max.
14.5 max.
0.50
0.50
0.50
1
G7SB-5A1B
0.50
1
1
1
11
23
33
43
53
63
12
24
34
44
54
64
−
3.50
+
Printed Circuit Board
Design Diagram
(Bottom View)
(±0.1 tolerance)
G7SA-4A2B
Fourteen, 1.4 dia.
11
21
33
43
53
63
12
22
34
44
54
64
−
20.32
15.40
(1.73)
18
7.62
7.62
7.62 5.08 5.08
(2.10)
+
Note: Terminals 23-24, 33-34, 43-44, 53-54, and
63-64 are normally open. Terminals 11-12 and
21-22 are normally closed.
Certified Standards
Forcibly Guided Contacts (from EN50205)
G7SB
• EN Standards, VDE Certified
EN61810-1 (Electromechanical non-specified time all-or-nothing
relays)
EN50205 (Relays with forcibly guided (linked) contacts)
• UL standard UL508 Industrial Control Devices
• CSA standard CSA C22.2 No. 14 Industrial Control Devices
If an NO contact becomes welded, all NC contacts will maintain a
minimum distance of 0.5 mm when the coil is not energized. Likewise
if an NC contact becomes welded, all NO contacts will maintain a
minimum distance of 0.5 mm when the coil is energized.
3
G7SB
Safety Precautions
Refer to the “Precautions for All Relays” and “Precautions for All Relays with Forcibly Guided Contacts” of
Safety Series Catalog (Cat. No. Y106).
Precautions for Safe Use
Connections
The coil terminals have polarity (+/−). Operation will not be possible if
the polarity is reversed.
Washing
The G7SB does not have a sealed structure. Do not wash G7SB
Relays.
Precautions for Correct Use
Mounting
Durability of Contact Outputs
The Relays with Forcibly Guided Contacts can be mounted in any
direction.
The durability of the Relays with Forcibly Guided Contacts varies
considerably depending on switching conditions. Always confirm the
usage conditions by testing the Relay with Forcibly Guided Contacts
in an actual application, and use the Relay with Forcibly Guided
Contacts only for the number of switching operations that its
performance allows.
Restarting a safety circuit like the one incorporating the Relay with
Forcibly Guided Contacts in Fig. 2 may not be possible if the switching
capacity is exceeded. If this occurs, replace the relevant relays
immediately. If a Relay with Forcibly Guided Contacts is used after
performance has deteriorated, it may result in reduced safety.
Relays with Forcibly Guided Contacts
While the Relay with Forcibly Guided Contacts has the previously
described forcibly guided contact structure, it is basically the same as
an ordinary relay in other respects. Rather than serving to prevent
malfunctions, the forcibly guided contact structure enables another
circuit to detect the condition following a contact weld or other
malfunction. Accordingly, when a contact weld occurs in a Relay with
Forcibly Guided Contacts, depending on the circuit configuration, the
power may not be interrupted, leaving the Relay in a potentially
dangerous condition (as shown in Fig. 1.)
To configure the power control circuit to interrupt the power when a
contact weld or other malfunction occurs, and to prevent restarting
until the problem has been eliminated, add another Relay with
Forcibly Guided Contacts or similar Relay in combination to provide
redundancy and a self-monitoring function to the circuit (as shown in
Fig. 2). Refer to the Safety Components Technical Guide.
The G9S/G9SA/G9SB Safety Relay Unit, which combines Relays
such as the Relay with Forcibly Guided Contacts in order to provide
the above-described functions, is available for this purpose. By
connecting a contactor with appropriate input and output to the Safety
Relay Unit, the circuit can be equipped with redundancy and a selfmonitoring function.
Fig 1
Fig 2
S1
S1
21
11
22
12
CE Marking
(Source: Guidelines on the Application of Council Directive 73/23/
EEC)
The G7SB has been recognized by the VDE for meeting the Low
Voltage Directive according to EN requirements for relays and relays
with forcibly guided contacts. The Low Voltage Directive, however,
contains no clauses that specify handling methods for components,
and interpretations vary among test sites and manufacturers. To
solve this problem, the European Commission has created guidelines
for the application of the Low Voltage Directive in EU. These
guidelines present concepts for applying the Low Voltage Directive to
components.
The G7SB, however, does not display the CE Marking according to
the concepts in the guidelines.
VDE recognition, however, has been obtained, so there should be no
problems in obtaining the CE Marking for machines that use the
G7SB.
Use the manufacturer’s compliance declaration to prove standard
conformance.
Contents of the Guidelines
The Guidelines on the Application of Council Directive 73/23/EEC
apply to components. Relays with PWB terminals are not covered by
the Low Voltage Directive.
S2
K1
S2
K1
K1
A1 A2 T11 T12
+ −
B1
Y1 X1
D
Power source
F1
K3 K1
K1
PE T21
K3 K2
K2
T22
K3
13
K1
K1
K2
K2
K3
14
Power source
4
G7SB
MEMO
5
G7SB
MEMO
6
G7SB
MEMO
7
G7SB
Warranty and Application Considerations
Warranty and Limitations of Liability
WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or
other period if specified) from date of sale by OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT,
MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER
ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET
THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS,
OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON
CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY.
In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS 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 OR REPAIR.
Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of
products in the customer's application or use of the products.
Take all necessary steps to determine the suitability of the product for the systems, machines, and equipment with which it will
be used.
Know and observe all prohibitions of use applicable to this product.
NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT
ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON
PRODUCTS ARE PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR
SYSTEM.
Disclaimers
CHANGE IN SPECIFICATIONS
Product specifications and accessories may be changed at any time based on improvements and other reasons. Consult with
your OMRON representative at any time to confirm actual specifications of purchased product.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. J165-E1-01
In the interest of product improvement, specifications are subject to change without notice.
OMRON Corporation
Industrial Automation Company
Safety Devices Division
Shiokoji Horikawa, Shimogyo-ku,
Kyoto, 600-8530 Japan
Tel: (81)75-344-7093/Fax: (81)75-344-8197
Printed in Japan
0907-0.3M (0907) (B)
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