Datasheet

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B-300
APEM
Switches &
Pilot Lights
Control Boxes
Emergency
Stop Switches
Enabling
Switches
Safety Products
Explosion Proof
Terminal Blocks
Relays & Sockets
Circuit
Protectors
Power Supplies
LED Illumination
Controllers
Operator
Interfaces
Sensors
AUTO-ID
Switches & Pilot Lights
Flush Silhouette
ø16
ø22
ø30
Miniature
Pilot Lights
HW
TW
YW
ø22 YW Series Switches & Pilot Lights
Precautions for Noise
When using the unibody pilot light in an environment where it is
subjected to noise, connect a noise suppressor across terminals X1
and X2 as shown below.
X2
X1
Noise Suppressor
Key Selector Switch
Before operation, ensure that the key is inserted into the key hole
completely. Operating the key selector switch with a loose key will
cause damage to the key selector switch.
Nameplate
When anti-rotation is not required, remove the
projection from the nameplate using pliers.
Handling
Do not expose the switch to excessive shock and
vibration, otherwise the switch may be deformed
or damaged, causing malfunction or operation
failure.
Projection
Nameplat
e
LED Illumination
LED lamps consist of semiconductors. If the applied voltage exceeds
the rated voltage, LED elements deteriorate due to overheat, resulting
in significant decrease in brightness, hue change, or failure of lighting.
Also, if extraneous noise, transient voltage, or transient current is
applied to the circuit, similar effects will be caused. When using LED
lamps, observe the following instructions.
Rated Voltage
The LED illuminated units are rated at 6V, 12V, 24V, 110V, or 230/240V
AC/DC, and can be used within ±10% the rated voltage of either AC
or DC, except the 230/240V AC/DC types can be used on 250V AC/DC
maximum.
DC Power
1. Switching power supply
Regulated voltage from a switching power supply is best suited.
Make sure to use within the rated voltage of the LED lamp.
2. Rechargeable battery
Note that the battery voltage may exceed the rated voltage of the
LED lamp while the battery is being charged and immediately after
the charging is complete. Be sure to use the LED lamp on a voltage
of ±10% the rated voltage, except the 230/240V AC/DC types on
250V AC/DC maximum.
3. Full-wave rectification
Since the LED lamp is AC/DC compatible, a diode bridge for
rectification is not necessary. If the LED lamp is used on a full-wave
rectification current through a diode bridge, the rectifier diodes will
reduce the voltage, resulting in lower brightness.
4. Single-phase half-wave rectification
This is not suitable for the power source of LED lamps. Use
constant- voltage DC power.
Noise
LED elements deteriorate due to extraneous noise, resulting in
significant decrease in brightness, hue change, or failure of lighting.
When such effects are anticipated, take a protection measure shown
below, such as RC elements or a surge absorber.
[Protection Example 1] For AC circuit
LED with
transformer
LED
R
C
LED
Ry
Relay
coil or
solenoid
R
C
LED with
transformer
[Protection Example 2] For DC circuit
Ry
LED
Diode
Relay
coil or
solenoid
+
–
Countermeasures against Dim Lighting
1. Leakage current through transistors or a contact protection circuit
may cause the LED lamp to illuminate dimly even when the output
is off.
2. When the LED lamp is illuminated by a transistor output, take the
following measure.
[Circuit Example]
Connect shunt resistor R in parallel with the LED lamp.
R
Io
Io: Leakage current when the output is off
R: Shunt resistor
LED
Ordering Information
•When ordering, specify the Part No. and quantity.
•Replacement contact blocks are supplied in a package containing 10
pieces.
Instructions
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