MINI-BEAM

page

2

MINI-BEAM Installation and Alignment

Proper operation of the SM2A312CV or SM2A312CV2 sensor requires that

it be mounted securely and aligned properly. In some applications,

excessive movement or vibration can result in intermittent or false

operation caused by loss of alignment. For best results, final-mount the

sensor in an 18mm-hole by its threaded barrel or use a mounting bracket

(see page 6).

Begin with the sensor at the approximate position where it will be

mounted. With power applied to the circuit and with the sensor set for

“light operate”, direct the sensor’s visible red spot at the object

approximately 16 mm (0.65 in) (for model SM2A312CV) or 43 mm (1.7

in) (for model SM2A312CV2) directly in front of the lens. Move the sensor

very slightly toward or away from the object while observing the red LED

indicator on the back of the sensor. Note the near and far points at which

sensing occurs (the range of distance over which the LED remains lit).

Mount the sensor at a point approximately midway in the range. This

should correspond to the point at which the red sensing spot on the object

appears most sharply defined. Mount the sensor at this position and

distance.

15 Turn

Gain

Adjustment

and Light/Dark

Operate Switch*

Gasketed

Acrylic Cover

Red LED lights when the

sensor's output is conducting

Lo

w Reflectivity

Bac

kgr

ound

Up

Do

wn

Left

Right

SM2A312CV

or

SM2A312CV2

Object

* Note regarding Light/Dark operate switch:

• Turn switch

fully clockwise for light operate (sensor outputs conduct when object is present)

• Turn switch

fully counterclockwise for dark operate (sensor outputs conduct when object is absent)

Distance from Sensor lens to object:

16 mm (0.65 in) for SM2A312CV

43 mm (1.7 in) for SM2A312CV2

CONVERGENT MODE ALIGNMENT

SM2A312CV OR CV2