Banner Q60 Background Suppression Series Manual de usuario descargar pdf (Pagina 4)

Q60V Series Adjustable-Field Sensors – Visible Red Emitter

page 4

Banner Engineering Corp. • Minneapolis, MN U.S.A.

www.bannerengineering.com • Tel: 763.544.3164

Color Sensitivity

The effects of object reflectivity on cutoff distance, though

small, may be important for some applications.

The excess gain curves on page 1 were generated using a white

test card of 90% reflectance. Objects with reflectivity of less

than 90% reflect less light back to the sensor, and thus require

proportionately more excess gain in order to be sensed with the

same reliability as more reflective objects. When sensing an

object of very low reflectivity, it may be especially important to

sense it at or near the distance of maximum excess gain.

It is expected that at any given cutoff setting, the actual cutoff

distance for lower reflectance targets will be slightly shorter

than for higher reflectance targets (see Figure 10). This

behavior is known as color sensitivity.

The percentage of deviation indicates a change in the cutoff

point for either 18% gray or 6% black targets, relative to the

cutoff point set for a 90% reflective white test card.

For example, the cutoff point decreases 4% for a 6%

reflectance black target when the cutoff point is adjusted for

1000 mm (40") using a 90% reflectance white test card. In

other words, the cutoff point for the black target is 960 mm

(38") for this setting.

Setting the Output Delay

The output of the Q60AFV sensor may be delayed between

0.008 and 16 seconds, in any of 72 increments. Delay is

indicated on the 5-segment light bar using single LED

segments or combinations of them, in varying stages of

intensity. Major increments, displayed by a single full-intensity

LED, are shown in Figure 13.

Figure 10. Q60V Cutoff point deviation

-1

-2

-3

-4

-5

200 300 400 500 600 700 800 900

1000

Cutoff Setting (90% White Card)

Percent Deviation

18% Gray Card

6% Black Card

Figure 11. Q60V minimum range vs. cutoff setting

150

140

130

120

110

100

200 400 600 800

1000

Cutoff Distance (mm) with 90% White Card

Minimum Range with a 6% Black Card (mm)

Figure 12. Q60V hysteresis

Figure 13. ON/OFF Delay options

2.0

1.5

1.0

0.5

200 400 600 800

1000

Cutoff Setting (mm) with 90% White Card

Hysteresis (% of Cutoff) with 6% Black Card

Step

Delay

Time

Delay

0.062

second

0.250

second

1.00

second

4.0

seconds

SIG

LED

Status

1 2 3 4 5 6 7 8

Comentarios a estos manuales

Sin comentarios

Banner Q60 Background Suppression Series Manual de usuario Pagina 4

Comentarios a estos manuales

Relacionado con productos y manuales para Sensores Banner Q60 Background Suppression Series