D2RF series
Two four digit display's.
Received Light Level and Threshold Setting.
6 teach method for individual applications.
Full Power Teaching
Standard detection mode for Thru-beam type sensing but applicable for retro-reflective sensing also.
Full automatic Teaching
Set while the equipment is operating.
Single point Teaching
Set without a target present.
Transparent / Glass Teaching
Ideal for the detection of glass, film, plastic or any transparent material.
Two points Teaching
Standard detection mode for Diffuse type sensing.
It is possible to make fine adjustments.
Zone Teaching
Similar to Area Teach Mode.
This is useful if the conveyor moves closer to and farther from the sensor.
An area +/- 10% of the teach point can be detected.
SAM Circuit - The ASC function (Auto Sensitivity Control)
Our engineer "SAM" designed this function. The lens and/or reflector may be contaminated over time.
The D2RF amplifier monitors the change in light level and automatically resets the threshold value.
After cleaning off the lens / reflector it used to be necessary to reset the threshold setting.
The D2RF does not require this step. Simply clean off the lens and wait three seconds without a target present.
The sensor will automatically reset the threshold level for the change.
This is how the SAM circuit works.
After cleaning the incoming light level will increase suddenly.
The SAM circuit computes the preset threshold based on the increase in light intensity.
This function is available only in Transparent Detection Mode.
Conventional Sensor
Contamination on the lens will eventually cause the sensor to malfunction.
D2RF series
SAM Circuit
The threshold will auto-matically return to the preset level after the lens is cleaned off.
APC Function (Auto Power Control)
The APC function ensures precise sensing even when there are changes in the temperature or environmental conditions.
APC maintains a constant power level of light emission by regulating the current flow into the light emission element.
The APC function can be turned On and Off.
IP66 and IP50, two types.
If your application is around water or high humidity.
There is a model of the D2RF-T series with an IP66 rating.
60 micro second high speed response.
Both outputs can be set to operate at this speed.
This response time is available in 5 of the teach modes.
Long Term Stable Detection.
A conventional 3 element LED will lose brightness over time.
This results in a decrease in sensitivity in the sensor.
Optex FA's new D2RF uses a 4 element LED to provide long service life.
The Green LED type D2GF uses a "Glan N2" LED, which offers the best performance for Mark Detection with a Green LED light source.
Cross Talk Prevention
Both outputs can be set to operate at this speed.
This response time is available in 5 of the teach modes.
LED Power adjustment
- 3 step adjustment of LED emitting power.
A highly reflective target will cause the amplifier to saturate making adjustment difficult.
This can also happen if the fiber cable is mounted too close to the target.
In situations where the amplifier is saturated due to excessive reflected light, the power level of the emitting LED can be decreased to 50 or 25 percent.
Counter Mode
The D2RF amplifier features a built-in counter. This makes it convenient to count parts, for example 10 pcs.
in a bag.
The output turns on once the sensor has counted the desired quantity.
Simply program in the number of parts to count.
Differential Sensing Mode
A bumpy conveyor always makes stable detection difficult.
The D2RF-T solves this problem with the Differential Sensing Mode. The Master and Slave amplifiers will calculate the difference between the reflection from the background and the target (see picture below).
No matter how much the surface of the conveyor moves up and down the D2RF-T can follow the change and reliably detect the target.
Selectable Response Time
The Response time will affect the sensing distance.
The D2RF-T has three choices (Long, Standard, and Fast), select the response time based on the required sensing distance.
Long Mode boosts the power for the maximum sensing distance with a 2 msec. response time.
The Fast Mode has a reduced sensing distance but provides high speed 60μsec. response.
Automatic Tuning
This provides a way to boost or dampen the excess gain level of the amplifier in poor sensing conditions (low light level, low sensitivity or saturating condition).
Automatic Tuning is ideal when you need a little bit better excess gain level, or when detecting a dark object with diffuse reflective fiber cables.
Edge Sensing
The sensor output triggers when there is a sudden increase or decrease in the light level.
This is ideal for sensing objects without being influenced by a dusty environment.
Zero Reset
The sensor display can be reset to zero. This is useful for adjusting the display's of the Master and Slave units to read the same.
It is also good to set the value to zero when the light is interrupted.
Two Independent Outputs.
Each output can be set separately.
The 2nd output can be configured as an external Teach input.
The operation of each output can be set to Light-On / Dark-On.
Also, the Threshold level, Timer settings, etc. of each output can be set independently.
The Analog output type (D2RF-TAN/P) provides a 4 ~ 20 mA (gray wire) analog output and a NPN (or PNP) digital output (black wire).
The second output can be configured as an Alarm output (self-diagnostic).
It can also be set to operate as an External Teach Input or Counter Reset Input if the Counter function is being used.
External Teach Input (CH2)
It is possible to have a Remote Teach Input if the CH2 output is re-assigned as an input.
When using the Remote Teach with Interconnected amplifiers all units will perform the Teach function simultaneously.
(This function is not available for Analogue Type)