Rockwell-automation 45CPD Analog Laser Sensor Manual de usuario descargar pdf (Pagina 4)

Object Position—Analog Output (4 to 20mA)

Once in the Teach-In mode press the  button and advance until

both the A

S1 and BS1 function LEDs are turned on. This is also

indicated by “0% analog” on the teach-in pad.

Position the target at the desired 0% position (4 mA) and then

press the SET button.

(If the target is not within the measuring range or cannot be

detected both AS1 and BS1 LEDs will blink.)

Press the  button and advance until both the AS2 and BS2

function LEDs are turned on. This is also indicated by “100%”

analog on the teach-in pad.

Position the target at the desired 100% position (20 mA) and then

press the SET button.

The 4…20 mA analog output is automatically scaled between the

0% and 100% positions which have been set.

After the settings have been completed successfully, press SET

and

 simultaneously for approximately one second to begin

normal operation.

(Note: The minimum measuring range for the analog output is

600 mm. If the setpoints are less than 600 mm apart, the sensor

will automatically scale the analog output (0…100%) to 600 mm

and the midpoint of this will be automatically set at the midpoint

between the two original setpoints.)

(Note: To invert the slope, the 0% position and 100% position

settings will need to be reversed and reset. The 0% setting is the

“close” setting for a positive slope. For a negative slope the 0%

setting should be the “far” setting.)

Object Detection—Background Suppression

To set the output for Q

A in a background suppression mode,

follow the same procedure as in the single output

mode above,

except move the switch on point

(AS1) closer to the sensor as

Output

AS1 & BS1

AS2 & BS2

100%

Analog Output

Analog Current (mA)

shown in the diagram below (creates a larger switching window).

Background targets will be suppressed beyond the A

S2 switch

point.

Object Detection—Reflector Mode Using a Background

Object as the Reflector

To set the output for Q

A in the reflector mode, follow the same

procedure as in the single output

mode above. Set the AS1 and AS2

switch points such that the background “reflector” will be

approximately midway between them as shown in the figure

below. The background object can be a floor, wall, conveyor, etc.

The output can be set up for Light Operate or Dark Operate by

inverting the output. Press

 until both the AS1 and AS2 LEDs are

turned ON and then press the SET button. This is also indicated

by “INV” on the teach-in pad.

Application Notes

1. The sensor should be powered for approximately five minutes

for maximum precision.

Accessories

Publication 75009-268-01(C)

[068-13807]

April 2008

Description Cat. No.

2 m (6.5 ft) micro DC cordset 889D-F5AC-2

Mounting Bracket 45CPD-BKT1

Output

Background

Is Suppressed

Background

Target Used

as Reflector

1 2 3 4

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