VB-2141 - Omron Automation and Safety

192 Mul tip le Lim it Sw i tch VB

Multiple Limit Switch

A New Monoblock Multiple Limit Switch

Incorporating a Head Bo x with a Tough Head

and Ensuring High Sealing P erf ormance and

a Mechanical Durability of 5,000,000

Operations

• Used for the sequential control of a variety of engineering ma-

chines and belt conveyor lines.

• Built-in oil filter shuts out oil and water.

• Approved by EN, IEC, and CCC (Chinese standard). (Ground

terminal models only.)

• Ground terminal models bear the CE mark.

Model Number Structure

■Model Number Legend

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 bo x 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

Replaceable Switch Unit

1 2 3 4 5 6

VB-@@@@@@

Rating Model

Standard load model VB-S101N

Mult iple Limit Switch VB 193

Ordering Information

■List of Models

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 mo dels.

3. Models with ground terminals are also av ailab le. When ordering a ground terminal model, add the suffix E to the model number (i.e., VB-

2211E for example).

4. Since the actuator is incorporated into the monoblock switch, the actuator cannot be replaced.

Actuator Conduit Model

Two on the side VB-2211 VB-2241

VB-3211 VB-3241

VB-4211 VB-4241

VB-5211 VB-5241

VB-6211 VB-6241

Four VB-2221 VB-2251

VB-3221 VB-3251

VB-4221 VB-4251

VB-5221 VB-5251

VB-6221 VB-6251

Two on the side VB-2111 VB-2141

VB-3111 VB-3141

VB-4111 VB-4141

VB-5111 VB-5141

VB-6111 ---

Four VB-2121 VB-2151

VB-3121 VB-3151

VB-4121 VB-4151

VB-5121 ---

VB-6121 ---

With flange Without flange

Roller plunger

(with a 6.8-dia. roller)

Bevel plunger

194 Mul tip le Lim it Sw i tch VB

Specifications

■Approved Standards

Note: Ground terminal models only.

■Approved Standard Ratings

TÜV (EN60947-5-1) (Only Ground

Terminal Models are Approved)

Standard Load

Micro Load

CCC (GB14048.5)

■General Ratings

St andard Load

Note: The above currents are steady-state currents.

Micro Load Ratings

■Characteristics

Note: 1. The above values are initial values.

2. The values are calculated at an operating temperature of 5°C to 35°C, and an operating humidit y of 40% to 70%. Contact your OMRON

sales representative f or more detailed information on other operating env ironment s.

Agency Standards File No. Approved models

TÜV Rheinland EN60947-5-1

(IEC947-5-1) R9551017 Only models with ground term i nals

CCC (CQC) GB14048.5 2003010305077628 Ask your OMRON representative for infor-

mation on approved models.

Applicable category and ratings

A C-15 2 A/250 VAC

DC-12 2 A/48 VDC

Applicable category and ratings

A C-14 0.1 A/125 VAC

DC-12 0.1 A/30 VDC

Applicable category and ratings

A C-15 2 A/250 VAC

Rated voltage Resistive load Inrush

current Inrush

current

NC NO NC NO

125 VAC 10 A 24 A max.

250 VAC 10 A

125 VDC 0.6 A

250 VDC 0.3 A

Rated voltage Resistive load

125 VAC 0.1 A

8 VDC 0.1 A

30 VDC 0.1 A

Degree of protection IP67

Durability (See note 2.) Mechanical: 5,000,000 operations min.

Electrical: 300,000 operations min. (10 A at 250 VAC , resistive load)

Operating speed 0.1 mm to 0.5 m/s

Operating frequency Mechanical: 120 operations min.

Electrical: 30 operations min.

Rated frequency 50/60 Hz (AC)

Insulation resistance 100 MΩ min. (at 500 VDC)

Contact resistance 15 mΩ max. (initial value)

Dielectric strength 1,000 VAC/Uimp 4,000 VAC between terminals of same polarity

1,500 VAC/Uimp 4,000 VAC between current-carrying metal parts and ground

1,500 VAC/Uimp 4,000 VAC between each terminal and non-current-carrying metal part

Uimp 4 kV (EN60947-5-1) between terminals of different polarity

Rated insulation voltage (Ui)300 VA C (EN60947-5-1)

Switching overvoltage 1,000 V max. (EN60947-5-1)

Pollution degree (operating environment) 3 (EN60947-5-1)

Short-circuit protective device (SCPD) 10 A fuse type gG or gI (IEC269)

Conditional short-circuit current 100 A (EN60947-5-1)

Conventional enclosed thermal current (Ithe)5 A, 0.5 A (EN60947-5-1)

Protection against electric shock Insulation class I (Use the grounding terminal or ground on the machine side.)

Vibration resistance Malfunction: 10 to 55 Hz, 1.5-mm double amplitude

Shock resistance Destruction: 1,000 m/s2 min.

Malfunction: 200 m/s2 min.

Ambient temperature Operating: –10°C to 80°C (with no icing)

Ambient humidity Operating: 35% to 95%

Weight Approx. 580 g (in the case of VB-4211)

Mult iple Limit Switch VB 195

Connections

■Contact Form

Nomenclature (for the VB-2211)

Engine ering Data

■Electrical Durability ( w ith more than 300,000 Operations)

COM

Plunger

Scraper

Box Cover

Switch

assembly

Seal, gasket

1,000

700

500

300

200

100

(Ambient temperature: 5°C to 35°C; Ambient humidity: 40% to 70%)

Durability (x 10

operations)

Switching current (A)

Operating frequency:

30 operations/min

250 V A C , cosφ = 1

196 Mul tip le Lim it Sw i tch VB

Dimensions

Note: All units are in millimeters unless otherwise indicated.

Note: 1. The above operating characteristic values apply to a single switch.

2. The OT and FP values are reference values.

3. The actual model numbers of each of the above VB models have a figure 2 to 6, which indicate the number of plungers.

Note: When five plungers are mounted in series, no outer actuator will be provided.

Model VB-@211 VB-@241 VB-@111 VB-@141

OF max. 14.71 N 14.71 N 14.71 N 14.71 N

RF min. 4.90 N 4.90 N 4.90 N 4.90 N

PT max. 1.5 mm 1.5 mm 1.5 mm 1.5 mm

OT (see note 2) (3.5 mm) (3.5 mm) (3.5 mm) (3.5 mm)

MD max. 0.5 mm 0.5 mm 0.5 mm 0.5 mm

OP 32±0.4 mm 19±0.4 mm 26±0.4 mm 13±0.4 mm

FP (see note 2) (33 mm) (20 mm) (27 mm) (14 mm)

Number of plungers H

2 58 mm

3 70 mm

4 82 mm

5, 6 (see note) 106 mm

98±0.2

114±0.8

50±0.2

30±0.2

12±0.2

14±0.2

68±0.8

28±0.3

Bevel Plunger

VB-@111

Two, 6+0.1-dia. holes

for positioning

Four, 6.5 dia. holes

Four, M4 x 10

screws

OP PT

Two, 8.5±0.1

dia. holes

8-dia. hard stainless

steel plunger

Cable drawing hole

with 3 threads min.

(G1/2) Two screw caps

25° to 30°

23.5 to 24.5

Dog setting

range

Dog

Filter Scraper

50±0.2

30±0.2

68±0.8

Cable drawing hole

with 3 threads min.

(G1/2)

8-dia. hard stainless

steel plunger

Two screw caps

Two, 8.5±0.1

dia. holes

Filter

OP PT

Four, M4 x 10

screws Scraper

Pitch

12±0.2 Dog

25° to

30°

10.5 to 11.5

Dog setting range

Bevel Plunger

VB-@141

98±0.2

114±0.8

50±0.2

30±0.2

12+0.2

Roller Plunger

VB-@211

Two, 6+0.1-dia.

holes for

positioning

Four, 6.5 dia. holes

Four, M4 x 10

screws

OP PT

Two, 8.5 ±0.1

dia. holes

6.8 dia. x 3.7

Stainless steel roller

Cable drawing hole with

3 threads min. (G1/2)

Two screw caps

25° to 30°

29.5 to 30.5

Dog setting

range

Dog

Filter Scraper

68±0.8

14±0.2

28±0.3

50±0.2

30±0.2

68±0.8

OP PT

Two, 8.5 ±0.1

dia. holes

6.8 dia. x 3.7

Stainless steel roller

Cable drawing hole with 3

threads min. (G1/2) Two screw caps

Filter

Scraper

Pitch

12±0.2

Four, M4 x 10

screws

25° to 30°

16.5 to 17.5

Dog setting range

Dog

Roller Plunger

VB-@241

Mult iple Limit Switch VB 197

Precautions

Refer to the “Precautions for General-purpose Limit Switches (Including Multiple Limit Switches, Mechanical Touch Switches, High-precision

Switches, Touch Switches, On-site Flexible Switches; Not Including Safety Switches)” on page 17.

■Correct Use

Operating Environment

•Seal material may deterio rate if a Switch is used outdoor or where

subject to special cutting oils, solvents, or chemicals. Always

appraise performance under actual application conditions and set

suitable maintenance and replacement periods.

•Install Switches where they will not be directly subject to cutting

chips, dust, or dirt. The Actuator and Switch must also be protected

from the accumulation of cutting chips or sludge.

•Constantly subjecting a Switch to vibration or shock can result in

wear, which can lead to contact interference with contacts, opera-

tion failure, reduced durability, and other problems. Excessive

vibration or shock can lead to false contact operation or damage.

Install Switches in locations not subjec t to shock and vibration and

in orientations that will not produce resonance.

•The Switches have phy sical contacts. Using them in environments

containing silicon gas will result in the formation of silicon oxide

(SiO2) due to arc energy. If silicon oxide accumulates on the con-

tacts, contact interference can occur. If silicon oil, silicon filling

agents, silicon cables, or other silicon products are present near

the Switch, suppress arcing with contact protective circuits (surge

killers) or remove the source of silicon gas.

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 shor t-circuit ing.

If the VB is used for EN ratings, use a gI or gG 1 0-A fuse approved

by IEC269.

Operation

Make sure the notch of the plunger is not pressed into the scraper

when operating the VB Multiple Limit Switch, otherw ise chips or dust

may penetrate into the VB Multiple Limit Switch.

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 98×103 Pa for the VB Multiple

Limit Switch.

The filter on the side of the head prevents oil and water from pene-

trating into the interior of the VB Multiple Limit Switch while pr event-

ing 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.

Apply extra tightening to the cap screw on the conduit.

In order to protect the plunger fr om abrasion and prolong its ser vice

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.)

Not Suitable Suitable

Operating plunger

Movable plunger

Seal scraper

Cap

Seal cap

Switch box

CoverSeal gasket O ring

Cap screw

Standard switch

198 Mul tip le Lim it Sw i tch VB

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 0.20 to

0.49 N·m if the mounting screw is M3 in size.

Be sure to wire each solderless terminal correctly with a screw as

shown below.

3. Apply a torque of 5.88 to 6.86 N·m to tighten each mounting bolt

of the casing if the m ounting 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

Mounting Holes

Wiring

Connect a cable wit h a thic kness of 0.75 mm2 to the V B Multiple Limit

Switch through the M3 round solderless terminals with insulation

covers.

Dimensi o ns of Ro und Solderless Termi nal

dz dia.: 3.2

D dia.: 1.9

B: 5.2

L: 16.4

F: 5.8

l: 8.0 (mm)

Wiring (Groun d Terminal Mod e ls)

Note: Consult your OMRON representative f or 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.

Solderless terminal

Terminal screw

Correct Incorrect

With a Flange Switch Box

Four, 6.5-dia. or

M6 mounting

holes

Two, 8.5-dia. or

M8 mounting

holes

Two, 6 dia.

-0.05

−0.15

protruding positions

Without a Flange Switch Box

Two, 8.5-dia. or

M8 mounting

holes

D dia.

Z dia.

Ground terminal

SC connector

Built-in switch

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ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.

To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.

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Cat. No. X019-E1-07............................4/07............Specifications subject to change without notice..............Printed in USA

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