• 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-@@@@@@
1 2 3 4 5 6
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
TÜV 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 MΩ min. (at 500 VDC)
15 mΩ max. (initial value)
1,000 VAC/U
imp
4,000 VAC
1,500 VAC/U
imp
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 current-
carrying metal
parts and ground
Dielectric
strength
Between each
terminal and non-
current-carrying
metal part
Between terminals
of different
polarity
Rated insulation voltage (U
i
)
Resistive load
0.1 A
Switching overvoltage
Pollution degree
(operating environment)
Short-circuit protective device
(SCPD)
Conventional enclosed thermal
current (I
the
)
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/U
imp
4,000 VAC
U
imp
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
TÜV (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/s
2
min.
200 m/s
2
min.
–10°C to 80°C (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 5°C to
35°C, 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: 5
°C
to 35
°C
; Ambient humidity: 40% to 70%)
1,000
700
500
Operating frequency:
30 operations/min
250
VAC,
cosφ = 1
Durability (x 10
4
operations)
300
200
100
70
50
30
10
0
0.5 1 2
3 4 5 6 7
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,
8.5±0.1
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,
8.5±0.1
dia. holes
Filter
98
±0.2
120°
40
85
50
±0.2
114
±0.8
45
85
120°
25
85
50
±0.2
45
25° to 30°
9
5.5
Four, M4 x 10
screws
Filter
14
±0.2
Scraper
25° to 30°
8.5
Scraper
Pitch
12±0.2
9
17
35
Dog
28
±0.3
8
46
60.5
68
±0.8
23.5 to 24.5
Dog setting
range
Four, M4 x 10
screws
46
60.5
68
±0.8
9
17
35
30
±0.2
H
Dog
10.5 to 11.5
Dog setting range
12
±0.2
H
30
±0.2
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
98
±0.2
50
±0.2
40
85
114
±0.8
45
85
50
±0.2
25
85
45
25° to 30°
9
9
17
35
12
±0.2
H
Dog
29.5 to 30.5
Dog setting
range
Four, M4 x 10
screws
25° to 30°
8.5
Scraper
Pitch
12±0.2
5.5
Four, M4 x 10
screws
Filter
14
±0.2
Scraper
46
60.5
68
±0.8
9
17
35
30
±0.2
H
Dog
16.5 to 17.5
Dog setting range
28
±0.3
8
46
60.5
68
±0.8
30
±0.2
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
32±0.4 mm
(33 mm)
VB-@251
VB-@241
14.71 N
4.90 N
1.5 mm
(3.5 mm)
0.5 mm
19±0.4 mm
(20 mm)
VB-@121
VB-@111
14.71 N
4.90 N
1.5 mm
(3.5 mm)
0.5 mm
26±0.4 mm
(27 mm)
VB-@151
VB-@141
14.71 N
4.90 N
1.5 mm
(3.5 mm)
0.5 mm
13±0.4 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
50
±0.2
15
±0.2
28
±0.3
98
±0.2
13
±0.2
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.
14
±0.2
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 98×10
3
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.
−0.05
/
−0.15
protruding positions
Without a Flange Switch Box
Two,
8.5-dia.
or M8
mounting holes
50
±0.2
Wiring
Connect a cable with a thickness of 0.75 mm
2
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
d
Z
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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