HPX-T combines Honeywell's past experiences with Fibre Optic sensors and its
APPLICATIONS
• Suitable for small parts detection in
pick-and-place machineries
• Assembly machines
• Special purpose machines
• Industrial robots
latest technology to create a dependable, user-friendly automatic tuning sensor. Setup
is simply and accurately performed by the push of a button. In addition, it is the
industry’s first photoelectric control to provide alphabetical and numerical
information on the status of the sensor. Numerically, you can monitor the light
reception level and the margin level you have, or had, at the time of auto-tuning. In
both cases, the larger the number, the more security you have for the operation.
The alphabetical information provides you the reason for error, instructing you what
to do next.
It's also the industry's first to offer 7 different levels of hysteresis, which will be
picked automatically for optimum setting on the application.
The Honeywell HPX-T is supported by a complete line of HPF standard plastic fibres
and special purpose fibres (glass, chemical-proof, cold and heat resistance) to
satisfy various applications.
Each HPX-T is delivered on the following setting : "RUN" for operation mode selector, "LO" for LO/DO selector and set at maximum scan
sensitivity. Parmeters are stored in a non-volatile, high releability memory and are kept even without power supply
Component description
Operator indicator (Red)
Stability indicator (Green)
Off-Delay display
Digital display
Tuning Button
Operation mode selector
LO/DO Selector
Cable
3 types of sensitivity adjustment/detection
1. Distinction/contrast2. Positioning3. Maximum sensitivity
HPX-T distinguishes 2 targets of different
material (reflectivity), colour or dimensions.
Fibre
Fibre
HPX-T memorizes the levels of light
reflected by the targets
Distinction/contrast setting
HPX-T determines the position of targets
Fibre
HPX-T memorizes the positioning
of the target
A typical application is when you require
maximum scan distance using ThroughScan fibres.
Maximum
scan distance
HPX-T maximizes the light output and the
sensitivity
Indicator status
Step
Target positionOperation
Digital
Red LED
Green LED
SET
1
RUN
Switch the operation
mode selector to "SET"
"1" is indicated
for step 1
OFF
OFF
Alarms for errors
Insufficient light
Digital
Red
LED
Insufficient contrast
Green
Digital
LED
Red
LED
Green
LED
Place the
2
first target
"A" in
position
Push the tuning button
once (first teaching)
OFF
"2" is indicated for
step 2
FLASH
FLASH
FLASH
Place the
3
4
tuning
completed
second target
"B" in
position
Push the tuning button
once (second teaching)
SET
RUN
Switch the operation
mode selector to "RUN"
Margin level is displayed
Level of light reception is displayed
OFF
Depends
on LO/DO
setting
ON
Should be
ON
for stable
operation
"E" for
error
will flash
"E" will continue to flash.
Output
is locked
FLASH
FLASH
OFF
OFF
"E" for
error will
be ON
"E" will continue to be
ON. Output
is locked
ONONOFF
OFF
Note on alarm display :
When the tuning is not properly made. "E" for error will either flash or stay on in the digital display. This can be used to assist you in correctly
setting the position of the fibre or the position of the targets. When "E" is flashing, the sensor informs you that there is not sufficient level of light
reception from the material. Try moving the fiber closer to the target.
If "E" stays On, the sensor informs you that there is not a sufficient level of difference in light reception between 2 targets for "contrast". Try
angling the fibre head position from the targets.
The alarm is locked (Output Off) until you re-teach the sensor.
Notes : In positioning, you have to push the tuning button only once for teaching.
Do not push the tuning button twice, as in "contrast" setting.
If the level of light reception is too low, "E" will flash. Try moving the fibre closer to the target.
The alarm is locked On (Output Off) until you re-teach the sensor.
Maximum sensitivity
This setting is equivalent to turning the potentiometer to
its maximum position on a conventional sensor. The
function has been mainly designed for Through-Scan
fibre applications.
Step
Operation
SET
Indicator status
Digital
Red LED
Green LED
Insufficient light
"E" for
error
will flash
Red
LED
FLASH FLASH
FLASH
Digital
Green
LED
OFF
1
RUN
Switch the operation
mode selector to "SET"
2
Push the tuning button
for 3 seconds
SET
3
tuning
completed
Off-Delay timer setting
Off-delay timer status
To activate
To de-activate
RUN
Switch the operation
mode selector to "RUN"
"1" is indicated
for step 1
"H" is displayed
Level of light reception is displayed
Operation
Push the teach button
for 10 seconds
Push the teach button
for 10 seconds
OFF
ON
Depends
on LO/DO
setting
Should be
ON
for stable
operation
Digital display
Off-delay "ON"
Off-delay "OFF"
OFF
ON
Note: Unlike the contrast, positioning a target is not
necessary for this maximum setting.
To activate or to de-activate the Off-Delay timer, make
sure that the operation mode selector is switched to
"RUN". The Off-Delay function latches the output On for
40 milliseconds before switching to Off. This prevents
the sensor from reacting to holes or irregularities in the
target.
Light reception level definition and the operation chart of output/LED indicators
Light
reception
level
Operating
level
Output
Output
indicator(red LED)
Stability indicator (green LED)
Light reception level
(digital indicator
Note:The point of operation is always set between 4 and 5 of light reception level.
L-ON
D-ON
L-ON
D-ON
)
A is equal to twice the hysteresis automatically set during sensitivity adjustment.
A
Stable light
Unstable light
Unstable dark
Stable dark
Time
Margin display
The digital display usually shows the amount of light received. However, it can also show the contrast margin, provided the
sensor is programmed for Distinction/Contrast setting :
• At the end of Distinction/Contrast setting, before putting the switch back to "Run".
• With the switch in «run» mode, by pressing the "tuning" button. (If the sensor is programmed for Positioning, the display will
show "-". If the sensor is programmed for Maximum sensitivity, the display will show "H").
The contrast margin shows the difference of light received between both targets. The higher the number, the better the security.
In this array, the first line is the number displayed. The second line shows the actual security margin, expressed as multiple of
the hysteresis (hysteresis is automatically adjusted).
The remote teaching function is available on HPX-T3, HPX-TV3, HPX-T4, HPX-TV4 models.
It allows the operator to program the sensor from a remote location, or to program a number of sensors in the same time.
As many sensors as needed can have their remote teaching inputs tied together, and be programmed via a manual switch or a PLC output.
For NPN versions (HPX-T3, HPX-TV3), the remote teaching wire must be connected to the ground for programming. When not
programming, it must be left open or, better, connected to the power supply.
For PNP versions (HPX-T4, HPX-TV4), the remote teaching wire must be connected to the power supply for programming. When not
programming, it must be left open or, better, connected to the ground.
The remote teaching function allows to program the sensor in Distinction/Contrast mode only. Positioning and Maximum Sensitivity
modes can not be programmed by remote teaching and must be programmed using the tuning button.
How to teach the sensor
SET
1 - Do not
put the selection switch on "set"
RUN
Leave the operation mode
selector "RUN"
2 - Present the first target
3 - Connect the Remote Teaching Input to the Ground (NPN versions)
or to Vdc (PNP versions), for a minimum of 100 ms
4 - Present the second target (leave at least 200 ms between teachings)
5 - Connect the Remote Teaching Input to the Ground (NPN versions)
or to Vdc (PNP versions), for a minimum of 100 ms
6 - The display shows the contrast margin for about 1 second
Place the first target "A" in
position
Place the second target "B" in
position
Margin level is displayed
7 - The sensor is programmed and goes back automatically to normal mode
Error :
If the level of light received is too low, or if the contrast margin is too tight, then the sensor goes in error state (showing "E"), and latches its output until it is re-taught.