Technical data

1615
Amplifiers D2RF seriesAmplifiers D2RF series
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.
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
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 sens-
ing distance with a 2 msec. response time.
The Fast Mode has a reduced sensing distance but
provides high speed 60µsec. response.
Selectable Response Time
Operation Flow:
How to follow the changing condition!
1000 200 800 1100 300 800 900 100 800
M
The same gap has been maintained.
Reflection
Output
Reflection
Reflection gap
between Master
and Slave
Teach-in
Value
The Master The Slave
Display DisplayComputing
advises reflection quantity
from conveyor surface
S M S M S
Conveyor bumps
downward
Normal position
Conveyor bumps
upward
Master Slave Master Slave Master Slave
It's traceable !target difference It's traceable !
Normal Mode:
Counter Mode:
123
output
output
output output
threshold
threshold
123
An output comes only when the preset
numbers are counted. (Max 9999)
An output comes as the sensor counts.
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.
Zero Reset
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.
Edge Sensing
Standard mode
Long mode
Fast mode
100mm 250mm 450mm
60μsec
250μsec
2msec
*Example: NF-DB01
(Response)
(Distance)
Long mode
Standard mode
Fast mode
Rising Edge Sensing Mode
Falling Edge Sensing Mode
Returned light level Threshold
Returned light level Threshold
Zero Reset :
Shifted value : 1000
Two Independent Outputs.
Each output can be set separately.
The 2nd output can be configured as an external Teach input.
Control output 2
Output : NPN/PNP or Alarm
Input : External teach or Counter reset
Control output 2
Output : NPN/PNP or Alarm
Input : External teach or Counter reset
12~24V DC
12~24V DC
Blue ❸
Black
Brown
Protection
Circuit
Protection
Circuit
Control output 1
Control output 1
0V
0V
Gray
Main circuit
Load
Load
❶
❷
❹
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)
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.
AmplifiersNotes
Flexible
Various Detecting Scheme
Environment-resistantLiquid
Extension lens
Various Shape for mounting
AmplifiersNotes Flexible
Various Detecting Scheme
Environment-resistantLiquid
Extension lens
Various Shape for mounting