A-20GQ21-B7-K

General-purpose Basic Switch A CSM_A_DS_E_2_1 High-capacity Switch Capable of Handling 20 A Loads with Large Inrush Currents • Same shape as OMRON Z Basic Switches except in pin plunger position, yet endures inrush currents as large as 75 A. Be sure to read Safety Precautions on page 5 and Safety Precautions for All Basic Switches. Model Number Structure Ordering Information Model Number Legend Terminal A - 20 G @ - @ Solder terminal Actuator (1) (2) (3) (4) Screw terminal (-B) Model Model Pin plunger A-20G A-20G-B Short spring plunger A-20GD A-20GD-B Panel mount plunger A-20GQ A-20GQ-B Panel mount roller plunger A-20GQ22 A-20GQ22-B --- A-20GQ21-B Short hinge lever A-20GV21 A-20GV21-B Hinge lever A-20GV A-20GV-B Short hinge roller lever A-20GV22 A-20GV22-B Hinge roller lever A-20GV2 A-20GV2-B (1) Ratings 20 : 20 A (250 VAC) (2) Contact Gap G : 0.5 m (3) Actuator None D Q Q21 Q22 V V2 V21 V22 : Pin plunger : Short spring plunger : Panel mount plunger : Panel mount cross roller plunger : Panel mount roller plunger : Hinge lever : Hinge roller lever : Short hinge lever : Short hinge roller lever Panel mount cross roller plunger (4) Terminals None : Solder terminal B : Screw terminal (with toothed washer) Specifications Ratings Certified Standard Ratings Non-inductive load (A) Rated voltage (V) Resistive load NC 125 VAC 250 VAC 500 VAC 8 VDC 14 VDC 30 VDC 125 VDC 250 VDC NO 20 20 15 20 20 6 0.5 0.25 Lamp load NC NO 3 3 3 0.5 0.25 Inductive load NC NO 20 20 10 7.5 7.5 4 1.5 1.5 1.5 0.5 0.25 Ask your OMRON representative for information on certified models. Inductive load (A) 20 15 5 0.05 0.03 Motor load UL/CSA (General ratings only) Rated voltage NC NO 12.5 8.3 2 12.5 12.5 5 0.05 0.03 Model A-20G 125 VAC 1 HP 10 A "L" 250 VAC 2 HP 480 VAC 20 A 125 VDC 0.5 A 250 VDC 0.25 A Note: 1. The above values are for steady-state current. 2. Inductive load has a power factor of 0.4 min. (AC) and a time constant of 7 ms max. (DC). 3. Lamp load has an inrush current of 10 times the steady-state current. 4. Motor load has an inrush current of 6 times the steady-state current. 5. The ratings values apply under the following test conditions: (1) Ambient temperature: 20±2°C (2) Ambient humidity: 65±5%RH (3) Operating frequency: 20 operations/min Accessories (Terminal Covers, and Separators): Refer to Z/A/X/DZ Common Accessories. 1 A Characteristics Engineering Data 240 operations/min Electrical 20 operations/min Insulation resistance 100 MΩ min. (at 500 VDC) Contact resistance 15 mΩ max. (initial value) Dielectric strength 1,000 VAC, 50/60 Hz for 1 min between terminals of the same polarity 2,000 VAC, 50/60 Hz for 1 min between the current-carrying metal parts and the ground, and between each terminal and non-currentcarrying metal parts Vibration resistance Shock resistance Durability Malfunction 10 to 55 Hz, 1.5-mm double amplitude *2 Destruction 1,000 m/s2 max. Malfunction 300 m/s2 max. *1 *2 Mechanical 1,000,000 operations min. Electrical 500,000 operations min. Degree of protection IP00 Degree of protection against electric shock Class I Durability (x10 4 operations) Mechanical 1,000 700 Ambient temperature: 20 ±2 °C Ambient humidity: 65 ±5%RH Without load Operating frequency: 240 operations/min 500 300 100 70 50 30 10 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 Overtravel (mm) Electrical Durability (A-20G) Proof tracking index (PTI) 175 Ambient operating temperature − 25°C to 80°C (with no icing) Ambient operating humidity 35% to 85%RH Weight Approx. 22 to 58 g *1. The value is for the pin plunger. (Contact your OMRON representative for other models.) *2. Malfunction: 1 ms max. Durability (x10 4 operations) Operating frequency Mechanical Durability (A-20G) 0.01 mm to 1m/s *1 Operating speed 1,000 700 Ambient temperature: 20 ±2 °C Ambient humidity: 65 ±5%RH Operating frequency: 20 operations/min 500 300 125 VAC, cosφ = 1 125 VAC, cosφ = 0.4 250 VAC, cosφ = 1 100 70 Contact Specification 50 Shape Contacts Rivet Material 30 Silver alloy Gap (standard value) Inrush current 250 VAC, cosφ = 0.4 0.5 mm NC 75 A max. NO 75 A max. 10 0 5 10 15 20 25 Switching current (A) Structure Contact Form (SPDT) COM NC NO Dimensions (Unit: mm) Terminals Mounting Holes Screw Terminals (-B) Use M4 mounting screws with plane washers or spring washers to securely mount the Switch. Tighten the screws to a torque of 1.18 to 1.47 N·m. Two, 4.2 dia. mounting holes or M4 9.2 20 20 17.45±0.2 COM 1 NO NC 3 2 49.2 25.4±0.1 Three, M4 × 5.5 Terminal screws (with toothed washer) Solder Terminal (-A) ("-A" is not included in the model numbers.) The Switch can be panel mounted, provided that the hexagonal nut of the actuator is tightened to a torque of 2.94 to 4.9 N·m. Panel Mount Plunger + 0.2 12.5 0 dia. Panel Mount Roller Plunger 12.5 + 0.2 0 dia. 5 + 0.2 0 6.4 25.4±0.1 11.9 17.45±0.2 13 + 0.2 0 3 1 NO COM NC 2 49.2 Note: 1. Appropriate terminal screw tightening torque: 0.78 to 1.18 N·m. 2. Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions. 2 A Dimensions and Operating Characteristics The models, illustrations, and graphics are for screw-terminal models. (The dimensions for models that are omitted here are the same as for pin-plunger models.) Pin Plunger A-20G-B 19.05±0.25 PT 2.3 dia. 4.2 +0.075 −0.025 dia. hole 2.3SR * OP 24.2 9.2 4.2 +0.075 −0.025 dia. 4.36 +0.1 −0.05dia. 11.9 25.4±0.1 49.2 Short Spring Plunger A-20GD-B 17.45±0.2 * Stainless-steel plunger 15 dia. PT 19.05±0.25 11.2 dia. 7.15 11.9SR * dia. 7.5 OP 24.2 * Stainless-steel plunger Panel Mount Plunger A-20GQ-B PT 19.05±0.25 8.35 dia. 11.9SR *1 M12 × 1 mounting screw OP *2 13.1 16.3 Note: Do not use both M12 mounting screw and mounting holes at the same time. Two hexagon nuts (2 t × 14 width across flats) Two lock nuts (2 t × 15.6 width across flats) 16 dia. *1 Stainless-steel plunger *2 Incomplete screw part with a maximum length of 1.5 mm. Panel Mount Roller Plunger A-20GQ22-B 19.05±0.25 PT 12.7 dia. × 4.8 *1 Two hexagon nuts (3 t × 17 width across flats) OP M12 × 1 mounting screw 15.5 *2 16.3 Note: Do not use both M12 mounting screw and mounting holes at the same time. 16 dia. *1 Stainless-steel roller *2 Incomplete screw part with a maximum length of 1.5 mm. Panel Mount Cross Roller Plunger PT A-20GQ21-B 19.05±0.25 12.7 dia. × 4.8 *1 Two hexagon nuts (3 t × 17 width across flats) OP M12 × 1 mounting screw 15.5 *2 16.3 Note: Do not use both M12 mounting screw and mounting holes at the same time. 16 dia. *1 Stainless-steel roller *2 Incomplete screw part with a maximum length of 1.5 mm. Note: Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions. Operating Characteristics A-20G-B A-20GD-B A-20GQ-B A-20GQ22-B A-20GQ21-B Operating force Release force Pretravel Over Travel Movement differential OF RF min. PT max. OT min. MD max. Model 3.92 to 6.13 N 2.79 N 1.3 mm 0.25 mm 0.2 mm 3.92 to 6.13 N 2.79 N 1.3 mm 3 mm 0.2 mm 3.92 to 6.13 N 2.79 N 1.3 mm 5.6 mm 0.2 mm 6.18 N max. 2.75 N 1.3 mm 3.58 mm 0.35 mm 6.18 N max. 2.75 N 1.3 mm 3.58 mm 0.35 mm Operating Position OP 16.3±0.4 mm 26.2±0.5 mm 21.8±0.8 mm 33.4±1.2 mm 33.4±1.2 mm 3 A Short Hinge Lever A-20GV21-B 24.56±0.25 t=1* 4.9 R .3 28 PT 20.2 17.9 14.7 OP * Stainless-steel lever Hinge Lever A-20GV-B 5R 24.56±0.25 63. PT t=1* 20.2 17.9 4.9 14.7 OP * Stainless-steel lever 24.56±0.25 Short Hinge Roller Lever A-20GV22-B 9.5 dia. × 4 (plastic roller) t=1* 26 .2 R PT OP 20.2 17.9 14.7 * Stainless-steel lever Hinge Roller Lever A-20GV2-B 9.5 dia. × 4 (plastic roller) 24.56±0.25 PT .4R 48 t=1* OP 20.2 17.9 14.7 * Stainless-steel lever Note: Unless otherwise specified, a tolerance of ±0.4 mm applies to all dimensions. Operating Characteristics OF max. RF min. PT max. OT min. MD max. OP Model A-20GV21-B A-20GV-B A-20GV22-B A-20GV2-B 1.57 N 0.41 N 6.5 mm 1.2 mm 1.2 mm 0.69 N 0.14 N 15.9 mm 4 mm 2.4 mm 1.57 N 0.41 N 6.3 mm 1.2 mm 1.2 mm 0.88 N 0.14 N 12 mm 2.4 mm 2.2 mm 19±0.8 mm 19±0.8 mm 29.8±0.8 mm 30.2±0.8 mm 4 A Safety Precautions Refer to Safety Precautions for All Basic Switches. Precautions for Safe Use Terminal Connection When soldering lead wires to the Switch, make sure that the capacity of the soldering iron is 60 W maximum. Do not take more than 5 s to solder any part of the Switch. The characteristics of the Switch will deteriorate if a soldering iron with a capacity of more than 60 W is applied to any part of the Switch for 5 s or more. Operation • Do not use the switch in locations subject to hot water (greater than 60°C) or in water vapor. • Do not use the switch outside the specified temperature and atmospheric conditions. The permissible ambient temperature depends on the model. (Refer to the specifications in this catalog.) Sudden thermal changes may cause thermal shock to distort the switch and result in faults. Incorrect • Make sure that the switching frequency or speed is within the specified range. 1.If the switching speed is extremely slow, the contact may not be switched smoothly, which may result in a contact failure or contact welding. 2.If the switching speed is extremely fast, switching shock may damage the Switch soon. If the switching frequency is too high, the contact may not catch up with the speed. The rated permissible switching speed and frequency indicate the switching reliability of the Switch. The life of a Switch is determined at the specified switching speed. The life varies with the switching speed and frequency even when they are within the permissible ranges. In order to determine the life of a Switch model to be applied to a particular use, it is best to conduct an appropriate durability test on some samples of the model under actual conditions. • Make sure that the actuator travel does not exceed the permissible OT position. The operating stroke must be set to 70% to 100% of the rated OT. Precautions for Correct Use Mounting Location • Do not use the switch alone in atmospheres such as flammable or explosive gases. Arcing and heat generation associated with switching may cause fires or explosions. • Switches are generally not constructed with resistance against water. Use a protective cover to prevent direct spraying if the switch is used in locations subject to splashing or spurting oil or water, dust adhering. Incorrect Terminal box Correct Terminal box • Install the switch in a location that is not directly subject to debris and dust from cutting. The actuator and the switch body must be protected from accumulated cutting debris and dirt. Incorrect Correct Correct Separate the installation location from heat sources. • Mount a cover if the switch is to be installed in a location where worker inattention could result in incorrect operation or accidents. Correct Incorrect (preventing malfunctions) • Subjecting the switch to continuous vibration or shock may result in contact failure or faulty operation due to abrasion powder and in reduced durability. Excessive vibration or shock will cause the contacts to operate malfunction or become damaged. Mount the switch in a location that is not subject to vibration or shock and in a direction that does not subject the switch to resonance. • If silver contacts are used with relatively low frequency for a long time or are used with microloads, the sulfide coating produced on the contact surface will not be broken down and contact faults will result. Use a microload switch that uses gold contacts. • Do not use the switch in atmospheres with high humidity or heat or in harmful gases, such as sulfide gas (H2S, SO2), ammonia gas (NH3), nitric acid gas (HNO3), or chlorine gas (Cl2). Doing so may impair functionality, such as with damage due to contacting faults or corrosion. • The switch includes contacts. If the switch is used in an atmosphere with silicon gas, arc energy may cause silicon oxide (SiO2) to accumulate on the contacts and result in contact failure. If there is silicon oil, silicon filling, silicon wiring, or other silicon products in the vicinity of the switch, use a contact protection circuit to limit arcing and remove the source of the silicon gas. Panel-mounting model (A-20GQ@) • If a Switch is side-mounted with screws, remove the hexagonal nut of the actuator. • If a Switch is side-mounted and secured with screws, make sure that the angle or speed of the actuating object is not excessively large or too high, otherwise the Switch may be damaged. • If a Switch is panel-mounted, pay utmost attention to make sure that the actuating speed or OT distance is not excessively high or large. Not doing so may damage the Switch. Accessories (Order Separately) Refer to Z/A/X/DZ Common Accessories for details about Terminal Covers, Separators, and Actuators. 5 Read and Understand This Catalog Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or comments. 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. At the customer's request, OMRON will provide applicable third party certification documents identifying ratings and limitations of use that apply to the products. This information by itself is not sufficient for a complete determination of the suitability of the products in combination with the end product, machine, system, or other application or use. The following are some examples of applications for which particular attention must be given. This is not intended to be an exhaustive list of all possible uses of the products, nor is it intended to imply that the uses listed may be suitable for the products: • Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or uses not described in this catalog. • Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment, amusement machines, vehicles, safety equipment, and installations subject to separate industry or government regulations. • Systems, machines, and equipment that could present a risk to life or property. Please know and observe all prohibitions of use applicable to the products. 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. PROGRAMMABLE PRODUCTS OMRON shall not be responsible for the user's programming of a programmable product, or any consequence thereof. Disclaimers 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 model numbers when published ratings or features are changed, or when significant construction changes are made. However, some specifications of the products may be changed without any notice. When in doubt, special model numbers may be assigned to fix or establish key specifications for your application on your request. Please consult with your OMRON representative at any time to confirm actual specifications of purchased products. DIMENSIONS AND WEIGHTS Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown. PERFORMANCE DATA Performance data given in this catalog 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 users must correlate it to actual application requirements. Actual performance is subject to the OMRON Warranty and Limitations of Liability. ERRORS AND OMISSIONS The information in this document has been carefully checked and is believed to be accurate; however, no responsibility is assumed for clerical, typographical, or proofreading errors, or omissions. 2008.11 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 2008 All Right Reserved.