Banner D10 Series Bedienungsanleitung PDF herunterladen (Seite 5)

P/N 64154 rev. F 5

D10 Expert

™

Dual Discrete Outputs

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

www.bannerengineering.com • Tel: 763.544.3164

Dynamic TEACH and Adaptive Thresholds

•TEACHon-the-y.

•Setsasinglethreshold.

•Thresholdpositionisadjustableusingthe“+”and“-”buttons(seeManualAdjust,page9).

Dynamic TEACH is used to program sensitivity during actual machine run conditions.

During Dynamic TEACH, the sensor takes multiple samples of the light and dark conditions

and automatically sets the sensitivity at the optimum level. Dynamic TEACH activates the

sensor’s adaptive threshold system, which continuously tracks minimum and maximum signal

levels, and automatically maintains centering of the switch point between the light and dark

conditions. The adaptive threshold system remains in effect during RUN mode to automatically

adjust for changes in the light or the dark conditions.

When Dynamic TEACH mode is used to program sensitivity, the output ON state (light or dark

operate) will remain as it was last programmed. To change to either light or dark operate, use

the SETUP mode (see page 10).

Dynamic TEACH and Manual Adjust

SensitivitymaybeadjustedatanytimewhenthesensorisinRUNmodebyclickingthe“+”

and“-”buttons.However,whenamanualadjustmentismade,theadaptivethresholdsystem

is disabled (cancelled).

Push Button

Remote

0.04 sec. ≤ T ≤ 0.8 sec.

Result

Access

Dynamic

TEACH Mode

•Pressandhold

Dynamic (+)

button.

•Holdremoteline

low (to ground).

•Displayflashes“dyn”

•Arrowiconturnsred

TEACH

Sensing

Conditions

•PresentOutput

ON/OFF conditions

while continuing to

hold Dynamic button.

•PresentOutput

ON/OFF conditions

while continuing

to hold remote

line low (to ground)

Return to

RUN Mode

•ReleaseDynamic

button.

•Releaseremote

line/switch.

TEACH conditions acceptable:

•Displayflashes“pass,” followed

by a number (denoting contrast);

see Figure 5.

•SensorreturnstoRUNmodewith

new settings.

•Arrowiconturnsgreen

TEACH conditions unacceptable:

•Displayflashes“fail”

•Arrowiconremainsred

•SensorreturnstoRUNmode

(Arrow icon turns green) without

changing settings.

TTTT

TTT

TTTT

TTT

TTTT

TTT

dynamic

static

dynamic

static

dynamic

static

Sensor positions

threshold midway

between taught conditions

Sensor positions

threshold midway

between taught conditions

Darkest

(no signal)

Darkest

(no signal)

Most Light

(saturated

signal)

Most Light

(saturated

signal)

Single

sensing

condition

Sensing window size

adjusted by

Manual Adjust

Output OFF Output OFF

Output OFF

Output ON

Darkest Taught

Condition

Lightest Taught

Condition

Position

adjusted by

Manual Adjust

Darkest

(no signal)

Most Light

(saturated

signal)

Output OFF Output ON

2nd Taught

Condition

1st Taught

Condition

Position

adjusted by

Manual Adjust

Figure 4. Dynamic TEACH (Light Operate

shown)

Contrast Values

500+ Excellent: Very stable operation.

100-500

Good: Minor sensing variables will

not affect sensing reliability.

32-99

Low: Minor sensing variables may

affect sensing reliability.

0-31

Marginal: Consider an alternate

sensing scheme.

Figure 5. Contrast Values

1 2 3 4 5 6 7 8 9 10 ... 15 16

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