VB-4151 Omron, VB-4151 Datasheet - Page 4

• Manufacturer Part Number: VB-4151
• Description: SWITCH LIMIT SPDT 10A BEVL PLNGR
• Manufacturer: Omron
• Series: VBr

Specifications of VB-4151

• Circuit: SPDT
• Switch Function: On-Mom
• Contact Rating @ Voltage: 10A @ 125VAC
• Actuator Type: Round (Pin Plunger)
• Mounting Type: Chassis Mount
• Termination Style: Screw Terminal
• Operating Force: 1471gf
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: VB4151

Safety Precautions
Refer to Safety Precautions for All Limit Switches.
Connection
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.
Sealing
Appropriate Tightening Torque
1. Tighten each cover mounting screw to a torque of 1.18 to
2. Tighten each switch terminal screw to a torque of 0.19 to 0.29 N·m
Be sure to wire each solderless terminal correctly with a screw as
shown below.
• Be sure to connect a fuse with a breaking current 1.5 to 2 times
• If the VB is used for EN ratings, use a gI or gG 10-A fuse approved
• The switch box and cover are made of die-cast aluminum and the
• Apply extra tightening to the cap screw on the conduit.
• In order to protect the plunger from abrasion and prolong its
larger than the rated current to the Switch in series in order to
protect the Switch from damage due to short-circuiting.
by IEC269.
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
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.
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.)
1.37 N·m.
if the mounting screw is M3 in size.
Correct
Switch box
Precautions for Safe Use
Seal cap
Cover
Terminal screw
Seal gasket
Solderless terminal
Cap
Operating plunger
Movable plunger
Standard switch
Seal scraper
3
Cap screw
Pa for the VB Multiple
O ring
Incorrect
3. Apply a torque of 5.88 to 6.86 N·m to tighten each mounting bolt
Mounting Holes
Wiring
Connect a cable with a thickness of 0.75 mm
Switch through the M3 round solderless terminals with insulation
covers.
Dimensions of Round Solderless Terminal
Wiring (Ground Terminal Models)
Consult your OMRON representative for details on models with 3 to 6
plungers.
Others
Four, 6.5-dia. or M6
mounting holes
• Carefully connect a conduit to each conduit hole and apply a seal
• Use the SC Connector. Consult your OMRON representative for
• Make sure that the position of the actuator that is traveling does not
With a Flange Switch Box
dz dia.: 3.2
D dia.: 1.9
B:
L:
F:
l:
Without a Flange Switch Box
Two, 6 dia.
protruding positions
or tape to seal the conduit hole so that cuttings or other materials
will not penetrate through the conduit hole.
details on SC Connectors.
exceed the overtravel (OT) position. Make sure that the operating
stroke is 70% to 100% of the specified OT distance.
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.
14
±0.2
5.2
16.4
5.8
8.0 (mm)
Ground terminal
−0.05
/
−0.15
50
±0.2
98
50
±0.2
D dia.
±0.2
Two, 8.5-dia. or M8
mounting holes
Two, 8.5-dia. or M8
mounting holes
15
13
±0.2
±0.2
l
28
±0.3
L
F
d
2
VB
Z
dia.
to the VB Multiple Limit
SC connector
Built-in switch
B
VB
4