Omron A8GS-T Series User manual

Delay OFF Rocker Switch A8GS-T 1
Delay OFF Rocker Switch
A8GS-T
Minimum size class in the industry Remote Reset
Rocker Switch with Delay OFF Function
• Rocker switch with Delay OFF Function. Switch is kept to turn ON,
even if button is operated to turn OFF, and Switch is turned OFF by
external signal.
• Zero standby power with Reset function, switching OFF by external
signal.
• Preventing from application trouble such as a data lost or circuit
damage by forced power OFF.
• Timing control of main power switch turn OFF for safety application
design with Delay OFF function.
• Contact gap of 3 mm minimum.
• UL and cUL standard approved, Conforming to EN standards.
• RoHS Compliant.
* There are 2 kinds of main models A8GS. (Delay OFF Function model and Remote Reset model) With regard to the models with Remote Reset Function, please refer to A8GS datasheet.
Ordering Information
Note: 1. This is not general 3 pole switch.
(1) Signal contact terminal is only for detecting button ON/OFF.
(2) Power contact terminal is for turning ON/OFF of circuit. Switch is turned OFF by external signal only, after turning OFF of button.
Specifications
■Contact Ratings
Note: 1. The above ratings were tested under the following conditions:
(1) Ambient temperature: 20 ± 2 °C
(2) Ambient humidity: 65 ± 5 % RH
(3) Switching frequency: 7 times/min
■Contact specifications
* Please refer to '' Using Micro loads'' in ''Precautions'' for more information on
the minimum applicable load.
Contact Form
1 to 4: Power contact terminal
a, b: Signal contact terminal
+, -: Coil terminal
Signal Contact Terminal: SPST + Power Contact Terminal: DPST
Quantity
per box
Signal Contact Terminal ×1 + Power Contact Terminal ×2
Terminals Signal Contact Terminal: CT Connector Power Contact Terminal: Quick-connect terminals
#187(t=0.8)
Signal Contact Terminal: CT Connector
Power Contact Terminal: Solder terminals
Marking on caps
No Marking A8GS-T1185K A8GS-T1115K
50
A8GS-T1285K A8GS-T1215K
A8GS-T1385K A8GS-T1315K
+
34
-
12
ab
Rated voltage Rated current
(Resistive load)
Power Contact Terminal 125 VAC 16 A
250 VAC 10 A
Signal Contact Terminal 5 VDC 0.2 A
Signal contact Power contact
Material Gold alloy Silver alloy
Contact gap 3 mm 3 mm
Minimum applicable
load (Reference value) * 3 VDC 1 mA 5 VDC 200 mA

2Delay OFF Rocker Switch A8GS-T
■Reset Coil Ratings
Note: 1. Voltage for coil should be set within operating voltage range and applied time should be within rated usage cycle.
Otherwise the performance of the coil may be deteriorated.
2. In case of applying voltage within the range from 5.5 to 24 VDC to the coil, contact your OMRON sales representative.
Characteristics
Note: Above specification values are initial values.
* For the testing condition in individual specification, contact your OMRON sales representative.
** Time from voltage applied to reset coil to actual contacts opening.
■Approved Safety Standards
Note: 1. There are no approved models of TV-8 rating for Delay OFF Function models.
Connector for Signal Switch Circuit and Coil Circuit
CT connectors produced by Tyco Electronics Corporation or XR connectors produced by JST shall be used
for connection of Signal and Coil circuit. Other connectors shall not be used.
* @ indicates Housing color.
Rated voltage, current Operating voltage range Rated usage cycle Coil resistance
(Coil temperature: 20 ± 2 °C)
5 VDC 455 mA 4.5 to 5.5 VDC ON: 50 to 100 ms
OFF: Min 5 sec 11 Ω ±20%
Permissible operating
frequency
Mechanical Switch operation: 20 times/min max, Coil operation: 7 times/min max
Electrical 7 times/min max
Insulation resistance 100 MΩmin (500 VDC)
Contact resistance Power contact terminal 100 mΩmax (6 VDC to 8 V, 1 A Voltage drop method)
Signal contact terminal 100 mΩmax (6 VDC to 8 V, 0.1 A Voltage drop method)
Dielectric strength
Between terminals of the
same polarity 2,000 VAC 50/60 Hz 1 min
Between terminals of the
different polarity 2,000 VAC 50/60 Hz 1 min
Between each terminals of the
switch and terminals of coil
4,000 VAC 50/60 Hz 1 min
Between each terminals of
switch and ground 4,000 VAC 50/60 Hz 1 min
Vibration resistance * Malfunction 10 to 55 Hz 1.5 mm double amplitude (Malfunction 1 ms max)
Shock resistance * Malfunction 300 m/s2min (Malfunction 1 ms max)
Destruction 1000 m/s2max
Ambient operating temperature -10 to +55°C (with no icing or condensation, 60 % RH max)
Ambient operating humidity 90 % RH max (+5 to 35°C with no icing or condensation)
Durability Mechanical Switch operation: 30,000 operations min, Coil operation: 10,000 operations min
Electrical Switch operation: 10,000 operations min, Coil operation: 10,000 operations min
Contact release time ** 100 ms max
Weight A8GS-T@@@@K: Around 15 g
UL (UL61058-1) Approved safety
standards ratings TÜV (EN61058-1) Approved safety standards ratings
Power contact terminal 16 A 125 VAC Power contact terminal 10(4) A 250 VAC
10 A 250 VAC Signal contact terminal 0.2 A 5 VDC
Signal contact terminal -
Tyco Electronics Corporation: CT connector
JST: XR Connector
Connector
Terminal
no.
Connection with
Switch
Pressure welding type Crimping type
Housing Contact
AWG #30-26 AWG #26-22 AWG #28-26 AWG #24 AWG #28-26
Signal
contact terminal
1 a (Switch COM)
179228-3
179609-1 179227-1
173977-3 2-179694-3 3XR-6@-P*2 ---
3 b (Switch NO)
Coil terminal 1 + (Coil) 179228-2 173977-2 2-179694-2 2XR-6@-P*
2-(Coil)

Delay OFF Rocker Switch A8GS-T 3
Voltage applied
Voltage applied
Operation
Delay OFF Function
Power contacts are kept in ON status, even if button is operated to turn OFF by manual operation of button.
And Switch is turned OFF by external signal to coil embedded in switch.
(1) Signal contact terminal and Power contact terminal are turned ON by manual operation of button.
(2) Power contact terminal is kept in ON status, even if button is operated to turn OFF by manual operation.
Only Signal contact terminal is turned OFF.
(3) Power contact terminal is turned OFF when external signal is applied to coil.
Furthermore, it is able to turn OFF both signal and power contact terminals from manual ON condition at the same time by
applying voltage to coil as Remote Reset Function.
Delay OFF Function Operation
Remote Reset Function Operation
Note: 1. Once switch is turned ON, Power contact terminal is not able to be turned OFF by manual operation.
Please apply the voltage to the coil in order to turn OFF Power switch circuit.
Switch circuit and operating condition
Button operating
condition
Signal contact terminal
Power contact terminal
Coil terminal
Button operating
condition
Signal contact terminal
Power contact terminal
Coil terminal
OFF (1) Manual ON (2) Manual OFF (3) Delay OFF / Remote Reset
OFF (1) Manual ON (2) Manual
Power switch terminal
is returned automatically.
(3) Delay OFF
ONOFF OFF
ONOFF OFF
No voltage applied No voltage applied
Button is
returned
automatically.
OFF (1) Manual (3) Remote Reset
ONOFF OFF
ONOFF OFF
No voltage applied No voltage applied
Power
supply 1
Power
supply 2
Load1
Load2
+
34
-
12
ab
+
34
-
12
ab
Load1
Load2
Power
supply 1
Power
supply 2
+
34
-
12
ab
Load1
Load2
Power
supply 1
Power
supply 2
Power
supply 1
Power
supply 2
Load1
Load2
+
34
-
12
ab
* 5 VDC applied to coil terminal

4Delay OFF Rocker Switch A8GS-T
Dimensions (Unit: mm) /Operating Characteristics
Note: 1. Unless otherwise specified, a tolerance of ± 0.4 mm applies to all dimensions.
2. At initial operation or operation after reset, operating force is increased, due to switch structure.
3. Solder terminals model has different hole shape, comparing with Quick-connect terminals. Outline and characteristics are same.
4. No models of switch without delay off function (without coil), due to product design.
Panel Cutout
1.3
10
19.2
18.6
0.8
15.8±0.8
16.5
27
6. 9
2
4.75
28. 5
30
22
OFF
OFF
ON
ON
CT Connector
CT Connector
A8GS-T1@85K
Operating force (OF) 1.8 ± 1.4 N
1.9
±0.1
4.3
±0.1
26.5 ±0.1
19.5
±0.1
27.7 ±0.1
R by cutting
OFF ON
(Operating surface direction) Edge
Panel thickness: 0.8 to 2.3 mm
Panel cutout design is for prevention of false insertion.
Please be careful about the direction of the protrusion.
The rollover of the panel shall be on the front face.
And panel back side shall be Edge shape by processing.
Note: 1. Recommendation panel material is "SPCC", however, in case of soft material or Panel back side shape is not edge, mounting strength may down.
Please check and try by actual mounting panel and set the Panel thickness and hole dimension.

Delay OFF Rocker Switch A8GS-T 5
Precautions
!WARNING
Do not wire the switch or touch any terminal of the
Switch while power is being supplied. Or it may result
in electric shock.
!CAUTION
Use the switch within the rated voltage and current ranges, other-
wise the switch may have deteriorated durability radiate heat, or
burn out. This particularly applies to the instantaneous voltages
and currents when switching.
■Correct Use
Mounting
Easy to mount by snap fitting.
Do not impose excessive force on switch at the time of panel mounting.
Do not detach the switch after installed. Otherwise, the holding strength may
be loose.
Apply the force to housing when installing to panel. Do not apply the force to
the button (rocker) part when installing to the panel.
Wiring
Confirm the size of the receptacles and be sure to connect them firmly.
Use an appropriate wire allowable to carry current.
Be sure that there is no mechanical stress on terminals and coil terminals.Oth-
erwise, the switch may malfunction and/or damaged.
(Example: Too strong wiring)
Take appropriate insulation distance between switch terminal and other metal
parts after wiring.
Coil has polarity, please confirm polarity when wiring.
Do not apply continuous voltage more than 10 seconds at any time. Otherwise,
insulation deterioration may occur by heat of coil. Please consider the circuit
design.
Reverse voltage may cause of accurate discrete semiconductor devices. In
case of controlling by accurate discrete semiconductor devices, Please con-
sider the circuit design. (Example : add the surge absorbing circuit)
In case of manual soldering, soldering time is max 4 sec by soldering iron
(Max 350 °C at the iron tip) and do not add the stress to terminals.
In case of touching the soldering iron to the root of terminals, it may cause
Housing parts melt.
Handling
Do not apply excessive operating force to the switch.
Do not drop or apply the excessive shock.
Otherwise the switch may be damaged or deformed.
Do not impose force to operating part from an angle, Otherwise the switch may
be damaged or deformed.
Environment for storage and use
To prevent the terminals color change and others while storage, Do not keep
for a long term in the following conditions.
(1) High temperature, high humid environment
(2) Corrosive gas
(3) The place where the direct rays of the sun
(4) The place where the sea breeze
(5) Environmental with a sudden temperature change
This switch is not sealed to prevent from entering dust and liquid.
Do not use under dust and liquid condition.
Switch shall not be icing or condensation.
Strong magnetic field may cause malfunction.
Check function is recommended under practical use conditions.
Using Micro Loads
In case of using the switch under the micro loads, please refer the Minimum
applicable load and set the load more than minimum applicable load.
Even when using micro load within the operating range, if inrush current
occurs, it may increase contact wear and so deteriorate durability.Therefore,
insert a contact protection circuit where necessary.
The minimum applicable load is the L-level reference value.
This value indicates the malfunction reference level for the reliability level of
60 %. (λ 60)
The equation, λ60 = 0.5 x 10-6 /operations indicates that the estimated mal-
function rate is less than 1/2,000,000 operations with a reliability level of 60 %.
RoHS Compliant
The "RoHS Compliant" designation indicates that the listed models do not con-
tain the six hazardous substances covered by the RoHS Directive.
Reference: The following standards are used to determine compliance for the
six substances.
Lead : 1,000 ppm max.
Mercury : 1,000 ppm max.
Cadmium : 100 ppm max.
Hexavalent chromium: 1,000 ppm max.
PBB : 1,000 ppm max.
PBDE : 1,000 ppm max.
■Usage Example
Saving energy by cutting standby power.
Saving energy by preventing forgetting turn OFF main power.
Turning OFF main power by remote.
Turning OFF main power of many equipments at the same time.
Timing control of main power switch turn OFF for safety design.
Preventing from circuit and data damage by power flicker.
Pushing position
Correct Incorrect

6Delay OFF Rocker Switch A8GS-T
OMRON ON-LINE
Global - http://www.omron.com
USA - http://www.components.omron.com
Cat. No. A223-E-01 Printed in USA
OMRON ELECTRONIC
COMPONENTS LLC
55 E. Commerce Drive, Suite B
Schaumburg, IL 60173
847-882-2288
05/13 Specifications subject to change without notice
All sales are subject to Omron Electronic Components LLC standard terms and conditions of sale, which
can be found at http://www.components.omron.com/components/web/webfiles.nsf/sales_terms.html
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.