Oiltight Switches and Pilot DevicesLW Series: 22mm
LW Series — Switches and Pilot Devices: 22mm
A
Switches & Pilot Devices
LW Series offer flexibility in space-saving package
Key features include:
• PC board mount, solder or screw terminal
•Collective mounting saves space
•Non-reflective lens
•Highly visible marking plate
•Tamper proof construction
•Light touch reduces strain
•Gold or silver contacts
•Removable contacts simplify wiring
and facilitate PCB applications
LW Series switches and pilot lights can be mounted collectively on 1.0"
centers. Combined with pcb terminals and locking lever removable
contacts, this eases manufacture of pre-fab pushbutton arrays (as
pictured). PC Board tracing/soldering of contacts can be done in tandem
with panel cutting/operator installation.
All LW series units mount by means of a locking ring that comes on from
the rear of the panel, as such they can not be removed from outside the
panel and are relatively tamperproof.
Combining the snap action and tactile feel of miniature commercial
pushbuttons with the size and ruggedness of industrial pushbuttons,
LW pushbuttons are a unique solution to many applications.
Choose from standard silver contacts or low-level gold plated contacts.
Ter minals available in .110" solder tab, M3 screw, or pcb pins.
UL Recognized
File # E55996
www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada (888) 317-IDECA-57
CSA Certified
File No. LR21451
Registration
No. J9551801
LW Series: 22mmOiltight Switches and Pilot Devices
–25 to +60°C (without freezing) LED illuminated type: –25 to +50°C
–40 to +80°C
45 to 85% RH
50mΩ maximum (initial value)
100MΩ minimum (500V DC megger)
Between live part and ground: 2,500V AC, 1 minute
Between terminals of different poles: 2,500V AC, 1 minute
Between terminals of the same pole: 1,000V AC, 1 minute
2.The LED contains a current-limiting resistor
and reverse polarity protection diode.
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USA: (800) 262-IDEC or (408) 747-0550, Canada (888) 317-IDECA-67
0.137"
g
LW Series: 22mm
Style
Ring Wrench (optional)
A
Lamp Holder Tool (optional)
Terminal Cover
(for solder tab terminal)
Terminal Cover
(for screw terminal)
Switches & Pilot Devices
Terminal Cover
(for short body pilot light with solder tab terminal)
Oiltight Switches and Pilot Devices
Accessories — LW Series
Description/UsagePart Number
1. Metallic tool used for tightening the plastic locking ring when installing the LW series on a panel.
2. Tightening torque should not exceed 1.2N-m
(12 kgf-cm) when tightening a locking ring.
Rubber tool used for replacing incandescent or LED lamps installed in
illuminated switches and pilot lights and pilot lights
ø0.452"
(ø11.6mm)
2.301" (59mm)
Nylon cover for pushbuttons and selectors with solder terminals snaps
onto contact block.
(Insert the lead wires through terminal
cover holes before wiring.)
Nylon cover for pushbuttons and selectors for screw terminals snaps
onto contact block.
(Insert the lead wires through terminal
cover holes before wiring.)
Nylon cover for short body pilot lights with solder terminals.LW-PVL
ø0.546"
(ø14mm)
LW9Z-T1
OR-55
LW-VL2
LW-VL2M
Terminal Cover
(for short body pilot light with screw terminal)
Rubber Mounting Hole Plug
Metallic Mounting
Hole Plug
Replacement
Marking Plates
Anti-Rotation Ring
Replacement
Keys
Nylon cover for short body pilot lights with screw terminals.LW-PVLM
Black rubber plug fills unused 22mm panel cutouts.
ø1.131" (ø29mm)
0.137"
(3.5mm)
1. Used for plugging unnecessary mounting holes in the panel. Tighten
the attached locking ring to a torque of 1.2N-m (12kgf-cm) maximum
2. Degree of Protection: IP66
White plastic engraving plate for use on all illuminated units (included
in each lens).
May be used to capture printed mylar insert (not supplied by IDEC)
under lens face.
Prevents rotation of switches in panel.
(included with all selector and key switches only)
Oiltight Switches and Pilot DevicesLW Series: 22mm
Engraving
Area
ø0.694" (ø17.8mm)
0.033"
(0.85mm)
Engraving
Area
ø0.683" (ø17.5mm)
0.033"
(0.85mm)
0.772"
(19.8mm)
0.69" (17.7mm)
LensMarking Plate Lens Holder
For Round Lens
FilmHousing
Top Marking Side
LensMarking Plate Lens HolderFilmHousing
Top Marking Side
For Square Lens
Instructions — LW Series
Replacement of Lens & Marking Plate
Removing
1. Remove the operator (lens, marking plate, and lens holder) by inserting a
screwdriver into the recess of the lens through the bezel.
2. Remove the marking plate by pushing the lens from the rear to disengage
the latches between the lens and the lens holder, using the screwdriver as
shown below.
The translucent filter in the lens holder can
not be removed because this filter is sealed to
make the unit waterproof and oiltight.
Installing
For round lens types, place the marking plate on the lens holder with the antirotation projection engaged and press the lens onto the lens holder to engage
the latches. For square lens types, insert the marking plate into the lens, and
press the lens onto the lens holder to engage the latches.
Pay attention to the orientation of the marking plate.
Pay attention to the orientation of the
marking plate.
For Round Lens
Lens Marking Plate Lens Holder
For Square Lens
Lens Marking Plate Lens Holder
the same direction. Then push the lamp lightly and turn it clockwise.
Grooves in the
Operator Unit
Replacement of Lamps by Removing the Contact Block
The lamp can be replaced by removing the contact block without using the
lamp holder tool.
Marking Plates & Films
For LW series illuminated pushbuttons and pilot lights, legends and symbols
can be engraved on marking plates, or printed mylar can be inserted under the
lens for labelling purposes.
Marking Plate and Marking Film Size
Lens StyleRound LensSquare Lens
Built-in
Marking
Plate
Engraving must be made on the engraving area within
0.02" (0.5mm) deep.
The marking plate is made of white acrylic resin.
0.772"
(19.8mm)
Applicable
Marking
Film
Insertion Order of Marking Plate & Film
Mylar for printing labels are not included and must be
provided and printed by user.
Two 0.004" (0.1mm)-thick films or one 0.008" (0.2mm)-thick
film can be installed in the lens.
Recommended marking film: Mylar
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Switches & Pilot Devices
Replacement of Lamps
Lamps can be replaced using the lamp holder tool (OR-55) from the front of
the panel. Also by removing the contact block from the operator unit, the lamp
can be replaced.
Replacement of Lamps from the Front of the Panel.
(How to Remove)
1. Push and turn the lamp counterclockwise using the side A of the
lamp holder tool, and the lamp and the lamp holder can be removed.
(How to Install)
1. Insert the lamp into the lamp holder tool and hold the lamp as in the
following illustration.
2. Place the insertion guide of the lamp and the groove in the operator unit in
www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada (888) 317-IDECA-73
LampLamp Holder Tool
Insertion Order of Marking Plate & Film.
1. Mylar is not included.
2. Pay attention to the orientation of marking plate.
LW Series: 22mmOiltight Switches and Pilot Devices
0.039"
(1mm)
0.078"
(2mm)
0.117"
(3mm)
0.156"
(4mm)
0.195"
(5mm)
0.234"
(6mm)
2000
1500
1000
500
0
Load (g)
Stroke
TW series pushbutton
(SPST-NO/SPST-NC)
LW series pushbutton
(Momentary DPDT)
LW series pushbutton
(Momentary SPDT)
0.117"
(3mm)
Stroke
Light Touch And High Reliability
Operating-force Snap Switching Mechanism
Instructions con’t
Panel Mounting
Remove the contact block from the operator. Insert the operator into the panel
cut-out from the front, then install the contact block to the operator.
Removing the Contact Block
A
Turn the locking lever on the contact block in the direction opposite to the
arrow on the housing. Then the contact block can be removed.
Installing the Contact Block
Insert the contact block, with the TOP markings on the contact block and the
operator placed in the same direction. Then lock the units, turning the locking
lever in the direction of the arrow.
Notes on Mounting
Use the optional Ring Wrench (LW9Z-T1) to mount the operator onto a panel.
Tightening torque should not exceed 1.2N-m (12 kgf-cm). Do not use pliers.
Excessive tightening will damage the locking ring.
Switches & Pilot Devices
Wiring
1. Solder the terminals within 20W/5 seconds or 260°C/3 seconds without
exerting external force to the terminals. While soldering, do not touch the
soldering iron to the housing. While wiring, prevent tension from being
applied to the terminals. Do not bend or raise the terminals, nor exert
excessive force
to terminals.
2. Use a non-corrosive resin liquid flux.
Collective Mounting
As the locking lever can be turned easily from the rear of the units using a
screwdriver, the contact blocks can be removed even when
mounted collectively.
Connection
Positive-lock connector and easy-lock connector are applicable to
tab terminals.
One Board Mounting
Mounting the switches and pilot lights on one PC board offers the following
features.
1. Reduced installation labor, easy wiring, space saving, and standardization.
2. Since the contact blocks on the PC board can be removed easily using a
locking lever, the LW series switches and pilot lights are easy to maintain.
3. Because the LW series switches and pilot lights require no studs for fastening the control unit to a PC board, special preparation of operation panel is
not needed.
For details on one board mounting, contact IDEC.
Notes for Terminal Cover
(Solder/Tab Terminal)
Insert the terminal cover into the contact block with the TOP markings on the
contact block and the terminal cover in the same direction.
When wiring, insert the lead wires into the terminal cover holes
before wiring.
Notes for Wiring
When installing a terminal cover onto the solder/tab terminal contact block,
solder the inside of lamp terminal (toward the switch terminals) and wire.
(Screw Terminal Type)
Install a terminal cover to the control unit before wiring.
1. After wiring, terminal covers cannot be installed.
2. When terminal covers are used, round crimping terminals
cannot be used.
Light-emitting diodes (LEDs) are P–N junction semiconductors with mechanisms called “junction electro-luminescence.” Application of direct current results in radiation or emission of a monochromatic light.
Different semiconductor materials produce different wavelengths of light as shown below:
GreenGallium Phosphide (GaP)5600 Å
Yellow
Amber
Red
Specifications
Infrared Gallium Arsenide (GaAs)9000 Å
Advantages of Using LEDs
• LEDs are used when heat generated by incandescent lamps would damage nearby equipment or interfere with
a precision process. This is particularly advantageous when multiple lights are grouped.
• LEDs can operate at low temperatures which would cause incandescent lamps to fail, since glass cracks during rapid cooling.
• LEDs consume 50 times less power than incandescent lamps, thereby reducing energy consumption.
• LEDs last 500 times longer than incandescent lamps. LEDs average a million hours (114 years) while incandescent lamps average 2000 hours.
• LEDs do not generally “blow out” unless subjected to a severe overvoltage. They exhibit a half-life type
dimishment in brightness over time. After 50,000 hours (6 years) of use, IDEC LEDs will retain approximately
half of their original intensity.
• IDEC’s SUPERBRIGHT LEDs have high visibility.
• LEDs require little or no maintenance because of long life and high reliability.
Gallium Arsenide
Phosphide (GaAsP)
Gallium Arsenide
Phosphide (GaAsP)
Gallium Arsenide
Phosphide (GaAsP)
5800 Å
6300 Å
6600Å
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Switches & Pilot Devices
IDEC Recommendations
For optimum results, especially when using switches and pilot lights in operating environments which are conducive to overheating, use IDEC LED illuminated units. Transformers are available for use with incandescent illuminated units, which operate
at lower voltages to avoid overheating.
When IDEC’s L-120L lamp is used, make sure ambient temperatures do not exceed 30˚C (86˚F). If
a lamp from another supplier is used, it should be rated f or less than 1.8 watts (15mA at 120V A C),
with ambient temperatures as stated above.
Information About Incandescent Lamps
Filament-type incandescent lamps operate within the following parameters.
Light output and life expectancy depend on operating voltage. Light output varies to the 3rd or 4th power of the voltage. Life
expectancy varies inversely to the 12th power of voltage. In other words, over-voltage of 5% reduces life expectancy by 50%.
Under-voltage of 5% doubles life expectancy at the price of light output efficiency.
Inrush current (initial current through the filament) has an adverse effect on life expectancy. Cold resistance (room temperature)
will have a more detrimental effect than hot resistance to inrush current. Life expectancy of incandescent lamps can be maximized by reducing occurrences of cold resistance to inrush current.
Continued intermittent flashing will significantly reduce life expectancy. When using an incandescent lamp with a tungsten filament, flashing will not reduce life expectancy as long as light output does not exceed that of steady burning.
When an incandescent lamp must withstand shock and vibration, use low voltage/high amperage (5–6V/60–120mA) lamps.
These lamps have a short, thick filament with a high resonant frequency.
Provide cooling by using a heat sink, particularly when multiple incandescent lamps are grouped or when air circulation is limited. Make sure ambient temperatures do not exceed 100˚C (212˚F) for maximum life of incandescent lamps.
www.idec.com USA: (800) 262-IDEC or (408) 747-0550, Canada (888) 317-IDECA-11
General InformationSwitches and Pilot Devices
Comparison: LED vs. Incandescent Lamps
Superbright LEDsIncandescent
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Heat Dissipation
Life Expectancy
Reliability
Mechanical
Strength
Maintenance
Required
Operation at Low
Temps.
Characteristics
Inrush Current
Voltage Effects
on Life
Brightness
Very LowHigh
Very LongShort
Very HighLow
Not SusceptibleSusceptible to Shock/Vibration
NegligibleFrequent
PossibleNot Possible
NegligibleVery Large
InsignificantSignificant
Slightly LessSlightly More
Switches & Pilot Devices
1. IDEC offers assembled and sub-assembled switches and pilot lights for your convenience. In some cases there is a cost difference, with sub-assembled units
costing slightly less. Since assembled units are custom made to your order, a couple of days for assembly is added to delivery. To minimize delivery or inventory
requirements, it is recommended that switches and pilot lights be ordered as sub-components.
2. When ordering pilot lights or illuminated pushbuttons, make sure to specify the color code in place of the asterisk in the part number, (LED or incandescent lamp
included). Spare lamps can be ordered and are listed with sub-assembly components.
3. Accessories, such as locking ring wrench, lens removal tool, and lamp holder, are available to make installation and assembly easier. IDEC recommends using
these accessories and is not responsible for damage as a result of using the wrong tool.
4. Marking plates are available for switches and pilot lights which feature a flat lens. Printed mylar (not included) can also be inserted under lens for labeling purposes.
5. Nameplates are available for TW, 7/8" (22mm), HW 7/8" (22mm),and TWTD series, Ø1–13/64" (30mm). For prompt delivery, order standard legends. Custom
engraving is also offered for an additional charge.
1. Use the appropriate lamp holder to remove or install LED or incandescent lamps. Using pliers will damage the lamp.
2. When mounting switches and pilot lights into a panel, use locking ring wrench.Using pliers or tightening excessively will damage the locking ring.
3. A series, 21/64" (8mm), can be mounted on a panel 0.019" (0.5mm) to 0.236" (6mm) thick.
4. LW 7/8” (22mm), TW, 7/8" (22mm), and TWTD series, Ø1–13/64" (30mm), feature an adjustment ring for mounting on a panel 0.038" (1mm) to 0.236" (6mm)
thick. Using a nameplate or an anti-rotation ring adds 0.031" (0.8mm) to the panel thickness.
5. When applicable, solder terminals within 20W/5sec or 260˚/3sec without exerting external force to the terminals. Use a non-corrosive resin liquid flux.
6. The operating voltage for LED units represents a complete DC value. When using a pulsing voltage, such a full-wave rectification, keeppeak currents within the
forward current I
7. To avoid a short circuit, never connect NO and NC contacts to different voltages or power sources.
8. Optimum performance of TW and TWTD illuminated pushbuttons, selector switches, and pilot lights is obtained with IDEC LED and incandescent lamps.
9. For maximum life of incandescent lamps (approximately 2000 hours), use within the rated operating voltage. If it is necessary to use a higher voltage, keeping
ambient temperature below 30˚C (86˚F)will help prolong the life of an incandescent lamp.
. Peak currents exceeding If may shorten the life of the LED lamp.
f
Ordering Information
Installation and Operation
If excessive voltage is applied (over 50V), the lamp may blow and