LS-T3 datasheet(46/64 Pages) IDEC

46 / 64 page

Instructions

Tightening Torque for Terminal Screws

Tighten terminal screws to a torque between 1.0 and 1.3 N·m.

Anti-rotation Ring and Mounting Panel

Turn the TOP marking on the operator and the

mark on the anti-

rotation ring to the recess on the mounting panel.

Projections (▲ mark)

Anti-rotation Ring

Locking Ring

Panel Thickness 1.2 to 4.5 mm

Mounting Panel Thickness

The mounting panel must be 0.8 to 6.0 mm in thickness. When

optional accessories are added, the applicable panel thickness

changes as shown below.

Panel Thickness

0.8 to 6 mm

Nameplate

Panel Thickness

0.8 to 3.2 mm

Contact Bounce

When the button is reset by pulling or turning, the NC main contacts

will bounce. When pressing the button, the NO monitor contacts will

bounce.

When designing a control circuit, take the contact bounce time into

consideration (reference value: 20 ms).

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.

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 luminance, 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 can be used on 250V

AC/DC maximum.

DC Power

1. Switching power supply

Regulated voltage from 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

on 250V AC/DC maximum.

3. Full-wave rectification

Since the LED lamp is AC/DC compatible, a diode bridge for recti-

fication 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 luminance.

4. Single-phase half-wave rectification

This is not suitable for the power source of LED lamps. Use con-

stant-voltage DC power.

Noise

LED elements deteriorate due to extraneous noise, resulting in

significant decrease in luminance, 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

LED

Relay

coil or

solenoid

LED with

transformer

(Reference values) R: 120Ω

C: 0.1 µF

[Protection Example 2] For DC circuit

LED

Diode

Relay

coil or

solenoid

–

Countermeasures against Dim Lighting

1. Leakage currents through the 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.

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.

ø22 YW Series Emergency Stop Switches

LS-T3 Datasheet(PDF) 46 Page - IDEC Corporation

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