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Multiple Limit Switch
VB
CSM_VB_DS_E_1_1
A New Monoblock Multiple Limit Switch Incorporating a Head Box with a Tough Head and Ensuring High Sealing Performance and a Mechanical Durability of 5,000,000 Operations
* Used for the sequential control of a variety of engineering machines and belt conveyor lines. * Built-in oil filter shuts out oil and water. * Approved by EN, IEC (Ground terminal models only.) and CCC (Chinese standard). Ask your OMRON representative for information on approved models. * Ground terminal models bear the CE mark.
Be sure to read the "Safety Precautions" on page 4 and the "Precautions for All Limit Switches".
Model Number Structure
Model Number Legend
Ordering Information
List of Models
Shape of box
VB-@@@@@@
123456
With flange
Without flange
1. Number of Plungers 2: 2 plungers 3: 3 plungers 4: 4 plungers 5: 5 plungers 6: 6 plungers 2. Actuator 1: Bevel plunger 2: Roller plunger 3. Switch Box 1: Flange switch box with two conduit holes on the side 2: Flange switch box with four conduit holes 4: Non-flange switch box with two conduit holes on the side 5: Non-flange switch box with four conduit holes 4. Scraper 1: NBR scraper 2: FPM scraper 5. Contact None: 10 A (standard) A: 0.1 A (micro load) 6. Ground Terminal None: Without ground terminal E: With ground terminal
Actuator *
Conduit VB-2211 VB-3211 Two on the side VB-4211 VB-5211 VB-6211 VB-2221 VB-3221 Four VB-4221 VB-5221 VB-6221 VB-2111 VB-3111 Two on the side VB-4111 VB-5111 VB-6111 VB-2121 VB-3121 Four VB-4121 VB-5121 VB-6121
Model VB-2241 VB-3241 VB-4241 VB-5241 VB-6241 VB-2251 VB-3251 VB-4251 VB-5251 VB-6251 VB-2141 VB-3141 VB-4141 VB-5141 --VB-2151 VB-3151 VB-4151 -----
Roller plunger (with a 6.8-dia. roller)
Bevel plunger
Note: 1. Other than the above models, minute load models switching 0.1 A are available. When ordering a minute load model, add the suffix A to the model number (i.e., VB-2211A for example). 2. SC connectors can be connected to VB models. 3. Models with ground terminals are also available. When ordering a ground terminal model, add the suffix E to the model number (i.e., VB-2211E for example). * Since the actuator is incorporated into the monoblock switch, the actuator cannot be replaced.
Replaceable Switch Unit
Rating Standard load model Model VB-S101N
1
VB
Specifications
Approved Standards
Agency TUV Rheinland Standards File No. Approved models Only models with ground terminals Ask your OMRON representative for information on approved models. EN60947-5-1 J50062491 (IEC947-5-1) GB14048.5 2003010305077628
Characteristics
Degree of protection Mechanical Durability * Electrical IP67 5,000,000 operations min. 300,000 operations min. (10 A at 250 VAC, resistive load) 0.1 mm to 0.5 m/s 120 operations min. 30 operations min. 50/60 Hz (AC) 100 M min. (at 500 VDC) 15 m max. (initial value) 1,000 VAC/Uimp 4,000 VAC 1,500 VAC/Uimp 4,000 VAC
CCC (CQC)
Operating speed Operating frequency Mechanical Electrical
Ratings
Standard Model
Rated voltage 125 VAC 250 VAC 125 VDC 250 VDC Resistive load NC 10 A 10 A 0.6 A 0.3 A NO
Rated frequency Insulation resistance Contact resistance Between terminals of same polarity Between currentcarrying metal parts and ground Dielectric strength Between each terminal and noncurrent-carrying metal part Between terminals of different polarity Rated insulation voltage (Ui) Resistive load 0.1 A Switching overvoltage Pollution degree (operating environment) Short-circuit protective device (SCPD) Conventional enclosed thermal current (Ithe) Protection against electric shock Vibration resistance Shock resistance Malfunction Destruction Malfunction
Note: The above currents are steady-state currents.
Inrush current NC NO 24 A max. 24 A max.
1,500 VAC/Uimp 4,000 VAC
Uimp 4 kV (EN60947-5-1) 300 VAC (EN60947-5-1) 1,000 V max. (EN60947-5-1) 3 (EN60947-5-1) 10 A fuse type gG or gI (IEC269)
Micro Load Ratings
Rated voltage 125 VAC 8 VDC 30 VDC
Approved Standard Ratings
TUV (EN60947-5-1) (Grand terminal models only) Standard Model
Applicable category Rated operating current (Ie) Rated operating voltage (Ue) AC-15 2A 250 V
Conditional short-circuit current 100 A (EN60947-5-1) 5 A, 0.5 A (EN60947-5-1) Insulation class I (Use the grounding terminal or ground on the machine side.) 10 to 55 Hz, 1.5-mm double amplitude 1,000 m/s2 min. 200 m/s2 min. -10C to 80C (with no icing) 35% to 95% Approx. 580 g (in the case of VB-4211)
DC-15
2A 48 V
Micro Load Model
Applicable category Rated operating current (Ie) Rated operating voltage (Ue) AC-14 0.1 A 125 V
DC-15
0.1 A 30 V
Ambient operating temperature Ambient operating humidity Weight
CCC (GB14048.5)
Applicable category and ratings AC-15 2 A/250 VAC
Note: The above values are initial values. * The values are calculated at an operating temperature of 5C to 35C, and an operating humidity of 40% to 70%. Contact your OMRON sales representative for more detailed information on other operating environments.
Engineering Data
Electrical Durability (with more than 300,000 Operations)
(Ambient temperature: 5C to 35C; Ambient humidity: 40% to 70%)
1,000 700 500
Durability (x 104 operations)
300 200 100 70 50 30 10
Operating frequency: 30 operations/min 250 VAC, cos = 1
0
0.5 1 2
34567
8 9 10 11 12
Switching current (A)
2
VB
Structure and Nomenclature
Structure (VB-2211)
Plunger Scraper
COM NC NO
Contact Form
Position of conduit * Two on the side ....A and B * Four .......................A, B, and C
A
Box
Cover
C
Seal, gasket Switch assembly
B
Dimensions and Operating Characteristics
Switches The actual model numbers of each of the above VB models have a figure 2 to 6, which indicate the number of plungers.
Bevel Plunger VB-@111
Two, 6+0.1-dia. holes for positioning FP Cable drawing hole with 3 threads min. (G1/2)
(Unit: mm)
Bevel Plunger VB-@141
OP PT
8-dia. hard stainless steel plunger Two, 8.50.1 dia. holes
Four, 6.5 dia. holes
Two screw caps
44 (3)
FP OP
Cable drawing hole with 3 threads min. (G1/2)
PT
Two screw caps
8-dia. hard stainless steel plunger
44
(3)
Two, 8.50.1 dia. holes
Filter
980.2
120 40
85 500.2
1140.8
45
85
120 25
85 500.2
45
25 to 30 9 5.5
Four, M4 x 10 screws Filter 140.2 Scraper
25 to 30 8.5
Scraper Pitch
120.2
9 17 35
Dog
280.3 8 46 60.5 680.8
23.5 to 24.5 Dog setting range
Four, M4 x 10 screws
46 60.5 680.8
9 17 35 300.2 H
Dog
10.5 to 11.5 Dog setting range
120.2 H
300.2
Roller Plunger VB-@211
Two, 6+0.1-dia. holes for positioning
Roller Plunger VB-@241
FP OP
Cable drawing hole with 3 threads min. (G1/2) PT 6.8 dia. x 3.7 Stainless steel roller
Cable drawing hole with 3 threads min. (G1/2) Two screw caps
Four, 6.5 dia. holes
44 (3)
FP OP
PT 6.8 dia. x 3.7 Stainless steel roller Two, 8.5 0.1 dia. holes Filter
Two screw caps
44
(3)
Two, 8.5 0.1 dia. holes
980.2 500.2 40
85
1140.8 45
85 500.2 25
85
45
25 to 30 9 9 17 35 120.2 H
Dog 29.5 to 30.5 Dog setting range Four, M4 x 10 screws
25 to 30 8.5
Scraper Pitch
120.2
5.5
Four, M4 x 10 screws
Filter 140.2
Scraper
46 60.5 680.8
9 17 35 300.2 H
Dog
16.5 to 17.5 Dog setting range
280.3 8 46 60.5 680.8
300.2
Note: Unless otherwise indicated, a tolerance of 0.4 mm applies to all dimensions.
Model Operating characteristics Operating force Release force Pretravel Overtravel *1 Movement Differential Operating Position Free Position *1 OF max. RF min. PT max. OT min. MD max. OP FP max.
VB-@221 VB-@211 14.71 N 4.90 N 1.5 mm (3.5 mm) 0.5 mm 320.4 mm (33 mm)
VB-@251 VB-@241 14.71 N 4.90 N 1.5 mm (3.5 mm) 0.5 mm 190.4 mm (20 mm)
VB-@121 VB-@111 14.71 N 4.90 N 1.5 mm (3.5 mm) 0.5 mm 260.4 mm (27 mm)
VB-@151 VB-@141 14.71 N 4.90 N 1.5 mm (3.5 mm) 0.5 mm 130.4 mm (14 mm)
Note: The operating characteristic values apply to a single switch. *1 The OT and FP values are reference values. The actual model numbers of each of the above VB models have a figure 2 to 6, which indicate the number of plungers.
Number of plungers 2 3 4 5, 6 *2 Size H (mm) 58 70 82 106
*2 When five plungers are mounted in series, no outer actuator will be provided.
3
VB
Safety Precautions
Refer to Safety Precautions for All Limit Switches.
Precautions for Safe Use
Connection
* Be sure to connect a fuse with a breaking current 1.5 to 2 times larger than the rated current to the Switch in series in order to protect the Switch from damage due to short-circuiting. * If the VB is used for EN ratings, use a gI or gG 10-A fuse approved by IEC269. 3. Apply a torque of 5.88 to 6.86 N*m to tighten each mounting bolt of the casing if the mounting bolt is an Allen-head bolt that is M6 in size. Apply a torque of 8.04 to 9.22 N*m instead if the mounting bolt is an Allen-head bolt that is M8 in size.
Mounting Holes With a Flange Switch Box
Four, 6.5-dia. or M6 mounting holes Two, 8.5-dia. or M8 mounting holes
500.2 150.2 280.3 980.2 130.2
Operation
Make sure the notch of the plunger is not pressed into the scraper when operating the VB Multiple Limit Switch, otherwise chips or dust may penetrate into the VB Multiple Limit Switch.
140.2
Sealing
* The switch box and cover are made of die-cast aluminum and the mounting part of the Switch is covered with a seal cap, and ensure a sealing performance of more than 98x103 Pa for the VB Multiple Limit Switch. The filter on the side of the head prevents oil and water from penetrating into the interior of the VB Multiple Limit Switch while preventing the internal pressure of the VB Multiple Limit Switch from rising when the plunger is pressed. The seal scraper on the tip of the actuator prevents chips and dust from penetrating into the moving parts of the VB Multiple Limit Switch.
Operating plunger Cap Movable plunger Seal cap Seal scraper Switch box
Two, 6 dia. /-0.15 protruding positions
-0.05
Without a Flange Switch Box
Two, 8.5-dia. or M8 mounting holes
500.2
Wiring
Connect a cable with a thickness of 0.75 mm2 to the VB Multiple Limit Switch through the M3 round solderless terminals with insulation covers.
Dimensions of Round Solderless Terminal
L l F
Cap screw Cover Seal gasket O ring Standard switch
dz dia.: D dia.: B: L: F: l:
3.2 1.9 5.2 16.4 5.8 8.0 (mm)
D dia.
B
dZ dia.
* Apply extra tightening to the cap screw on the conduit. * In order to protect the plunger from abrasion and prolong its service life, apply a small amount of grease to the plunger and dog or cam that come into contact with the plunger. (Molybdenum disulfide grease is recommended.)
Wiring (Ground Terminal Models)
SC connector
Built-in switch
Appropriate Tightening Torque
1. Tighten each cover mounting screw to a torque of 1.18 to 1.37 N*m. 2. Tighten each switch terminal screw to a torque of 0.19 to 0.29 N*m if the mounting screw is M3 in size.
Ground terminal
VB
Consult your OMRON representative for details on models with 3 to 6 plungers.
Others
* Carefully connect a conduit to each conduit hole and apply a seal or tape to seal the conduit hole so that cuttings or other materials will not penetrate through the conduit hole. * Use the SC Connector. Consult your OMRON representative for details on SC Connectors. * Make sure that the position of the actuator that is traveling does not exceed the overtravel (OT) position. Make sure that the operating stroke is 70% to 100% of the specified OT distance. Be sure to wire each solderless terminal correctly with a screw as shown below.
Solderless terminal
Correct
Incorrect
Terminal screw
4
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.
2009.11 In the interest of product improvement, specifications are subject to change without notice.
Industrial Automation Company
http://www.ia.omron.com/
OMRON Corporation
(c)Copyright OMRON Corporation 2009 All Right Reserved.

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