Panasonic MW-W20, MQ-W3 Ambient environment, Connections, Distance adjustment, Detector, Above

MQ-W

CAUTIONS

These products are not safety sensors and are not designed or intended to be used to protect life and prevent bodily injury or property damage.

1. Ambient environment

1)Use within the range of ambient temperature of –25 to +55°C –13 to +131°F.

2)Use within a range of 9.6 V to 30 V DC (ripple P-P included) for operating voltage.

3)Use with an ambient light level at the light receiving surface of less than 10,000 lux for incandescent lamp and less than 30,000 lux for sunlight.

4)Use a surge absorber as the internal circuit may be damaged if external surge voltage exceeds 500 V

[±(1.2 50) µs of single polarity full- wave voltage].

5)Avoid using in a location with high

concentrations of steam, dust, or corro- sive gas.

6)The sensor is of immersion protected type, but this does not mean that it can be used in water or where there is direct impingement of rain for detecting objects.

2. Connections

1)Check all wiring before applying power since incorrect wiring may dam- age the internal circuit.

2)Use a load relay with a rated operat- ing voltage of 12 V DC or 24 V DC. The voltage applied to the load relay is the operating voltage of the photoelectric sensor minus the internal voltage drop (1.2 V). Voltage fluctuations should be taken into account.

3)If a load greater than 100 mA is con- nected, the output section will be damaged, so sufficient care should be taken.

4)If the wiring to the photoelectric sen- sors run parallel to high voltage or power lines, due to inductive noise, mis-operation or damage can occur. Wiring should be run in separate.

5)Wire 0.3 mm2 .0005 inch2 AWG22 or larger should be used for wiring up to a length of 100 m 328 ft..

6)When the photoelectric sensors being mounted, if the unit is struck by a hammer or other heavy tool, the func- tion can be impaired. Sufficient care should be taken.

7)The changeover from Light-ON (light entry ON) to Dark-ON (light intercepted OFF) can be carried out with the pink lead wire. For Light-ON, connect the pink wire to the B side, and for Dark- ON, connect the pink wire to the v side.

3. Distance adjustment

1)Set the detecting surface of the pho- toelectric sensor in the detecting direc- tion and temporarily fasten it.

2)While no target in the detection region, set the distance adjustment dial to maximum (FAR) and slowly turn it counterclockwise.

Continue turning the control counter- clockwise until the operation indicator LED (OPE.) is extinguished. This is the adjustment position. If the indicator LED is extinguished at the maximum position, that is the adjustment position.

3)With target in the detection area, set the dial in the minimum position (NEAR) and turn the control clockwise to locate the position where the indica- tor LED turns ON. If the indicator LED goes ON at the minimum position, then NEAR is the adjustment position.

4)Set the control to a point midway between the locations found in 2) and

3)above.

5)Securely fasten the photoelectric sensor. When fastening, the sensor should be sufficiently secure so that it will not shift under vibration of shock.

Distance adjustment dial	Adjustment
	indicator LED

MQ-W3 type	Operation
MW-W20 type	Indicator LED
Distance adjustment dial	Adjustment
	indicator LED

MQ-W70 type	Operation
	Indicator LED

Notes:

1.If the adjustment indicator LED does not light in the adjustment of 3) as pre- scribed, or if the position between 2) and 3) is less than 2 graduations, change the position of the detection surface and repeat the procedure of 1) to 4), or try to determine the source of external factors such as variation in ambient temperature, variation in target position, etc., that creating the problem.

2.The difference in detection distance due to the colors of the target is virtual- ly non-existent, but if the actual target is one where the reflectivity is extremely low (target which have a frosted finish produced by black rubber), or where the reflectivity is extremely high (mirror, glass, or truly reflectting target), confir- mation should be done with the actual target.

4. Detector

1)Keep the detector surface clean as excessive dust or dirt on the detector surface will decrease the margin of the distance range.

2)The front surface of the lens is made of polycarbonate. This material is resis- tant to water, weak acids and alkalis, aliphatic hydrocarbons, oils, etc., but it is not resistant to ketones, esters, halo- genated hydrocarbons, or aromatic hydrocarbons.

08/2005 271