PANASONIC LS-H91 (02) PDF Document

When using the PANASONIC LS-H91 and related series, please observe the following safety measures:

Laser Hazardous Class: This product belongs to “Class 2 laser product” according to IEC 60825-1:2014. A Class 2 laser emits visible light with a wavelength range of 400 nm to 700 nm, under which eyes can be protected by an aversive reaction such as a blink.

General Safety:

• Never use this product as a sensing device for personnel protection.
• For personnel protection, use products that meet standards such as OSHA, ANSI, or IEC applicable in each region or country.
• Avoid observing beams continuously, particularly in a dark surrounding environment.
• Do not look at beams using an optical device such as an optical telephoto system.
• Never attempt to disassemble, repair, or modify this product.
• Use of control or adjustment or performance of procedures other than those specified in the instruction manual may result in hazardous radiation exposure.

The specifications for the PANASONIC LS-H91 and related models are as follows:

• This product has been designed/produced for industrial use only.
• Always use the sensor with the connector to be joined to the amplifier.
• Make sure that the power is off while wiring to the amplifier.
• If noise generating equipment (switching regulator, inverter motor etc.) is used in the vicinity of this product, connect the frame ground (F.G.) terminal of the equipment to an actual ground.
• If power is supplied from a commercial switching regulator, ensure that the frame ground (F.G.) terminal of the power supply is connected to an actual ground.
• Do not use the sensor during the initial transient time (0.5 sec.) just after the power supply is switched on.
• Do not run the wires together with high-voltage lines or power lines or put them in the same raceway. This can cause malfunction due to induction.
• Take care that the sensor head is not directly exposed to fluorescent lamp from a rapid-starter lamp or a high frequency lighting device, as it may affect the sensing performance.
• The sensor head cable cannot be extended.
• Make sure that stress is not applied to the sensor head cable joint.
• This sensor is suitable for indoor use only.
• Do not allow any water, oil fingerprints, etc., which may refract light, or dust, dirt, etc., which may block light, to stick to the emitting/receiving surfaces of the sensor head. In case they are present, wipe them with a clean, soft cloth or lens paper.
• Do not use the sensor in vaporous, dusty or corrosive gas atmospheres.
• Take care that the sensor does not come in contact with water, oil, grease or organic solvents, such as thinner, etc.
• Make sure that the power is off while cleaning the emitting/receiving windows of the sensor head.

When mounting the PANASONIC LS-H91:

• The tightening torque should be 0.5N-m or less.
• When placing the sensor horizontally or vertically, the reflector must also be positioned horizontally or vertically towards the sensor.
• If the sensor is placed horizontally or vertically but the mirror is tilted, the reflection amount will decrease, which may cause unstable detection. The reflective mirror must not be tilted toward the sensor.

In principle, the coaxial retroreflective type (PANASONIC LS-H91 and LS-H92) may be unable to detect a mirror object or an object which easily diffuses the receiving light at a short sensing distance since the polarized light becomes unstable.

Measures:

• Lower the receiving light sensitivity with the M.G.S. function of the amplifier.
• Change the response time.
• Make the distance between the sensor head and the sensing object farther.

Note: The receiving light intensity may change depending on the surface condition of the reflector. When a threshold value is set with the applicable amplifier LS-400 series, sufficient margin should be taken into account.

The diffuse reflective type models (LS-H21 and LS-H22) incorporate a spot-size adjuster to adjust the size of the spot diameter.

• Turn the spot-size adjuster clockwise or counterclockwise to adjust the spot diameter at your desired detecting distance.
• However, if the adjuster is overturned, it may be damaged.

The lens attachment for line reflective type (LS-MR1) is mounted on the long sensing range line reflective type (LS-H22) and is removable. It can also be attached to LS-H21.

Mounting Method:

1. The size of the upper fixing hook of LS-MR1 is not the same as the lower fixing hook.
2. After confirming upper and lower fixing hooks, insert the LS-MR1 upper fixing hook into the fixing slot at the top of the sensor and then insert the LS-MR1 lower fixing hook into the fixing slot at the bottom of the sensor.
3. After mounting, check that LS-MR1 is properly fixed to the sensor.

Removing Method:

1. Insert a screwdriver into the fixing slot located at the top of the sensor.
2. Tilt the screwdriver inserted in Step 1 to remove LS-MR1.

Notes:

• Keep the lens from dust, dirt, water, oil, grease, etc.
• Do not apply any excessive bending force to LS-MR1. Such force may cause damage.

To connect the wire for the PANASONIC LS-H91:

1. Process the core length to 7 to 8 mm in accordance with the ‘STRIP GAUGE’ indicated on the side of the unit, and twist the core several times. When using shielded wires, twist the wire until obtaining a diameter of 1.2 mm or less.
2. Use a flathead screwdriver (Blade width: 2 mm or less) to push the operating lever (white) located at the operating area until it is locked.
3. Insert the wire to the innermost of the wire inlet. Check that the shielded wire is properly inserted into the wire inlet as well as that the core end has passed through the wire connection area.
4. Place the head of a flathead screwdriver underneath the operating lever (white) through the releasing slot, and lift the screwdriver head. If you hear a snap, the operating lever (white) is returned and the wire is fixed.
5. Lightly pull the wire to ensure that wire is not loose. When using shielded wires, also check that they do not contact each other.

Connecting cable details:

• Terminal 1: Conductive core: Brown
• Terminal 2: Shielded wire (Cable color: Gray)
• Terminal 3: Conductive core: Yellow
• Terminal 4: Shielded wire (Cable color: Black)

To release the wire, use a flat-head screwdriver (Blade width: 2mm or less) to push the operating lever (white) located at the wire inlet and remove the wire.