VB-2221 Omron, VB-2221 Datasheet - Page 6

• Manufacturer Part Number: VB-2221
• Description: 2 ROLLER PLNGR, 4 CONDUIT
• Manufacturer: Omron
• Series: VBr

Specifications of VB-2221

• Rohs Compliant: YES
• Circuit: SPDT
• Switch Function: On-Mom
• Contact Rating @ Voltage: 10A @ 125VAC
• Actuator Type: Roller Plunger
• Mounting Type: Chassis Mount
• Termination Style: Screw Terminal
• Operating Force: 1471gf
• Actuator Style: Roller Plunger
• Contact Voltage Ac Max: 250V
• Contact Current Ac Max: 10A
• Switch Terminals: Screw
• Contact Configuration: SPDT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: VB2221

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.
Operating Environment
• Seal material may deteriorate if a Switch is used outdoor or where
• Install Switches where they will not be directly subject to cutting
• Constantly subjecting a Switch to vibration or shock can result in
• The Switches have physical contacts. Using them in environments
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.
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.
subject to special cutting oils, solvents, or chemicals. Always
appraise performance under actual application conditions and set
suitable maintenance and replacement periods.
chips, dust, or dirt. The Actuator and Switch must also be protected
from the accumulation of cutting chips or sludge.
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 subject to shock and vibration and
in orientations that will not produce resonance.
containing silicon gas will result in the formation of silicon oxide
(SiO
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.
Not Suitable
Correct Use
2
) due to arc energy. If silicon oxide accumulates on the con-
Suitable
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
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 prevent-
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 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.)
Switch box
Seal cap
Cover
Multiple Limit Switch
Seal gasket
Cap
Operating plunger
Movable plunger
Standard switch
Seal scraper
3
Pa for the VB Multiple
Cap screw
O ring
VB
197