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參數(shù)資料
| 型號： | SHL-W55 |
| 元件分類： | 開關 |
| 英文描述： | SNAP ACTING/LIMIT SWITCH, SPST, MOMENTARY, 10A, 14VDC, 11mm, PANEL MOUNT |
| 文件頁數(shù)： | 12/12頁 |
| 文件大?。?/td> | 435K |
| 代理商： | SHL-W55 |
136
Enclosed Switch
SHL
DC Operation
LED indicator is provided.
As a rectifier stack is incorporated, into the unit and no directionality
exists for connection of + and –, this type can also be operated on
AC.
Voltage ratings of LED indicators are as shown in the table below.
Example:
Basic type:
SHL-Q2255-01MR
When placing your order for the molded terminal with an LED indica-
tor rated at 24 V, specify the model number as SHL-Q2255-01L3MR.
Contact Circuit
Precautions
■ Correct Use
Operating Environment
Seal material may deteriorate 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 subject to shock and vibration and
in orientations that will not produce resonance.
The Switches have physical contacts. Using them in environments
containing silicon gas will result in the formation of silicon oxide
(SiO
2) 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.
Connections
Be sure to connect a fuse with a breaking current 1.5 to 2 times the
rated current to the Limit Switch in series in order to protect the Limit
Switch from damage due to short-circuiting.
When using the Limit Switch under the EN ratings, use a gI or gG 10-
A fuse that conforms to IEC269.
Handling
When detaching the Terminal Protective Cover, insert a screwdriver
and apply a force in the opening direction. Do not use excess force to
remove the cover. Doing so may cause deformation in the fitting sec-
tion and reduce the holding force.
When mounting the Terminal Protective Cover to the case, align the
cover on the case and then press the cover down to mount it firmly. If
the cover is pressed down in an inclined position, rubber packing will
deform and thus affect the sealing capability.
Mounting
Secure the Switch with two M4 screws and washers. The tightening
torque applied to each terminal must be 1.18 to 1.37 Nm. Tighten
the screws to the specified torque. An excessive tightening torque
may damage the Switch and cause a malfunction.
When mounting the panel mount-type Switch with screws on a side
surface, remove the hexagonal nuts from the actuator.
Mounting Holes
When mounting the panel mount type (SHL-Q55, SHL-Q2255, or
SHL-Q2155) on a panel, tighten the hexagonal nuts of the actuator to
a torque less than 7.84 Nm.
Type
Voltage rating
Lamp current
Internal
resistance
L2
12 V
Approx. 2.4 mA
4.3 k
L3
24 V
Approx. 2 mA
10 k
L4
24 V
Approx. 1.2 mA
18 k
Power supply
Built-in switch
Load
Resistor
LED
Not Suitable
Suitable
Screwdriver
Terminal Protective Cover
Two, 4.3-dia. or
M4 screw holes
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