HiTECH INSTRUCTION MANUAL MICROSONAR U-200 SERIES
HiTECH
Technologies, Inc.
MICROSONAR
U-200 SERIES
Ultrasonic Proximity Sensor
INSTRUCTION MANUAL
HiTECH Technologies Inc.
301 Oxford Valley Road
Yardley, PA 19067-7706
Tel: 215. 321. 6012 - Fax: 215. 321. 6067
Technical support: 800.755. 4507 or 888. NIVELCO
Email: [email protected]
1. Operation
The HiTECH/NIVELCO MICROSONAR proximity sensor, working on the ultrasound echo
principle is suitable for detection of the position or measuring distance of objects.
The measurement can only be accomplished if the space between the unit and the target is free of
any obstacles for making the way of the ultrasound beam and good reflection on the target.
The output of the unit is either PNP switch or analog signal of voltage or current..
2. Technical data
General Data
Type
Nominal
range
o-213 UTo
o-211
URo
Xmin
o-212
UTo
URP-263
8” (0.2 m)
UTP-261
UTP-262
16” (0.4 m)
Xmax
39” (1.0 m)
20’ (6.0 m)
Ultrasound frequency
160 kHz
60 kHz
Total beam angle
5°
Meas. sequence time (Tp)
25 ms
80 ms
Resolution
0.1 mm
0.25 mm
1.5 mm
0.25 mm
0 .1 mm
1.5 mm
Output
PNP switch
4 ... 20 mA
0 ... 10 V
PNP switch
4 ... 20 mA
0 ... 10 V
Programming
With contacting a PRG cable, with magnet,
Ambient temperature
-4 °F … +155 °F (-20 ... +70 °C)
Power supply
10.8 ... 30 V DC
Consumption Us=12 V
< 31 mA*
< 55 mA
< 41 mA
< 30 mA*
< 54 mA
< 40 mA
Consumption Us=24 V
< 39 mA*
< 63 mA
< 49 mA
< 37 mA*
< 61 mA
< 47 mA
Input protection
Reverse polarity, surge, ESD
Integrated cable
Shielded cable with PVC coating L = 10 feet
Cable core
4 x 0.5 mm2
Electric protection
Class III
Ingress protection
UoS-2oo IP 67, UoP-2oo IP68
IP 68
UoS-2oo: stainless steel with PP covers,
Enclosure
PP (molded with resin)
UoP-2oo: PP
Weight
400 g
530 g
Output Data
TYPE
Output
Rating
Rating
Voltage residuum
Switching delay or
Settling time
Tb* =a**ŸTp
Temperature coeff.
Linearity
Repeatability
Output signal
Load resistance
Output protection
URo
o-2o
o 3-4
PNP
35V
UTo
o-2o
o 2-4
+Us
+Us
SW
Uout
+
GND
UTo
o-2o
o1-4
35V
GND
Max. 30 V DC
Max. 200 mA
< 2.5 V
25, 100, 200, 400 ms with U oo-21o-4
+Us
35V
GND
-
80, 320, 640, 1280 ms with Uoo-26o-4
± 0,02% / C
± 0,35%
1 mm
1,5 mm
1.5 mm
0 ... 10 V (Us > 13 V)
4...20 mA
≥ 1 kΩ
≤ 500 Ω (Us > 14 V)
Short circuit, EMC
Short circuit, EMC
EMC
3. Dimensions
Max.30
28
A
SW38
132
UoS-21o-4
20
S ensor surfac e
M30x1.5
104
50
A
80
Sensor surface
6
68
68
80
Pg11
105
UoP-26o-4
4. Installation
The unit should be installed stable and to a place without vibration.
Pipe-enclosure units should be fixed to a
mounting plate with a hole of ∅ 31 mm
UR/UT-200
.
by the help of the nuts supplied. Units with
flat enclosure can be mounted to the wall
or any flat surface with four bolts. Cables
should be fixed near to the enclosure and
LEDs should have to be visible.
A+B>x
In case of limited space, the way of the
ultra sound path may be broken by a metal
sheet as below (Figure1).
diverting sheet
B
m in
Surface detected
∅ dt
Figure 1 Diverting travelling way of the ultra sound
Xt
Target
e'
t
Sensor
e''
t
Figure 2
Limits of disturbance
and sensing
A
Surface detected
e
Indefinite half sheet
U oo -21o
t
[cm]
20
e
[m]
U oo-26o
t
Curve of disturbance
0,6
Curve of disturbance
0,4
10
d t = 50
d t = 13 [mm]
0
80 [mm]
0,2
0
0
20
40
60
80
100
X t [cm]
0
1
2
3
4
5
6
X t [m]
4. Installation (continued)
Bmin
1.5 Bmin
Bmin [m]
0.25
0.75
Uo o-21o
Uo o-26 o
Figure 3
Minimum distance of units
working parallel next to each other
Figure 2 is indicating distances (e’t) within which the unit is sensing the target as well as distances
(e”t) outside of which disturbing objects (indefinite half-sheet) is not disturbing operation of the unit.
Units with the same frequency may mutually disturb each other as sent or reflected ultrasound may
reach the other unit. To avoid such interference, units with parallel axis should be installed outside of
the minimum distances as per Figure 3. Applications of targets with round reflecting surfaces (like
pipes) that involve side reflections greater minimum distances might be required.
5. Wiring
Wiring should be carried out in accordance with Figure 4 and Figure 5 taking into consideration color
of the wires as per Table 1.
+10,8...30V DC
+Us
+10,8...30V DC
+Us
+
+
PRG
PRG
Rt
B
GND
shielding
shielding
Figure 4
Wiring during programming
Rt
GND
GND
GND
Figure 5
Wiring during operation
A
Table 1 Cable colors
Type
URo-2o3-4
UTo-2o1-4
UTo-2o2-4
Cable
Color
+U S
SW
brown
green (black)
PRG
GND
shielding
white
yellow
blue
+U S
I out or Uout
PRG
GND
brown
green (black)
white
yellow
shielding
blue
6. Start Up, Operation and Programming
6.1 START UP, OPERATION - Following
the power up, the unit will run a selftest routine for 5 seconds. During the
self-test all three LEDs are lit. In case
of revealing a failure LEDs will blink in
the same rhythm. Interpretation of the
LED states during proper operation:
XA < XB
XA> X B
closed
closed
open
open
XA
X B distance
X
X
B
A
distance
Figure 6 Transfer characteristic of units with PNP output
Green:
Yellow:
Red:
Blinking in the rhythm of the measurement.
Lit continuously in case of valid echo.
Lit if the unit is sensing an object within the minimum measuring range.
Error will be indicated by the output
SWITCHES compare measured distance with the two (XA and XB) distances and switch in accordance
with Figure 6. TRANSMITTER output signal is (within the two distances programmed) proportional
to the distance in accordance with Figures 7 and 8.
I out
XA < XB
X A <X B
XA > XB
I out
20,5 mA
20 mA
Uout
20,5 mA
20 mA
3,8 mA
3,8 mA
4 mA
10,5 V
10 V
U out
10 V
X A >X B
10,5 V
UT >13V
< 20 mV
< 20 mV
4 mA
distance
distance
distance
Figure 8
Transfer characteristic of units with voltage output
distance
X
X
X
X
Figure 7
Transfer characteristic of units with current output
A
B
B
X
A
A
XB
X
B
X
A
After the first power up the unit will work with the following Factory Setting and characteristic:
SWITCHES:XA = Xmax/2, XB = XA + 0.1 m
TRANSMITTERS: XA = Xmin, XB = Xmax
Distance parameters XA, and XB can be changed with programming by placing a good reflecting
target at the distance to be programmed and by stepping to the relevant Menu Point. The unit will
measure and store (learn) the distance.
MICROSONAR will accept the echo coming from the reflecting surface (within the range) nearest to
the unit. The range of the unit with Factory Setting extends between Xmin and Xmax . (Nominal range)
If the target is moving within narrower range it is advised to reduce the range by far-end blocking
which should be done with programming XT.
Factory default XT = Xmax
Sensor surface
2
Targets
present
1,2,3
2,3
3
3
1
Figure 9
0
Xmin
A
X1
X2
XB XT
Measured
distance
X1
X2
Error
Xmax
Far-end blocking will prevent evaluation of echoes coming behind XT. Should for any reason (unstable
echo, intensive movement of air) the echo be lost, the object behind XT will not be taken into
consideration but lack of the valid echo will immediately trigger error indication.
Error indication on the output:
SWITCH STATUS: off (open)
TRANSMITTER IOUT = 3.6 mA
TRANSMITTER UOUT = 0 V
The signal processing of the unit can be adapted for the most different requirements and conditions
of the application. The two programmable parameters influencing signal processing are the averaging
number and the number of discarded echoes.
Averaging number: a (1, 4, 8 or 16)
To avoid mistaken measurements the unit will not provide output on the basis of a single measurement
but by taking the average of the last a number of distance samples.
Increasing averaging number will reduce small oscillation of the output signal born by the indefinite
movement of the target or measurement error (caused by noise). On the other hand this will cause a
target tracking failure depending on the speed of the target which will be mended after a Tb=a⋅ Tp
settling time or switching delay
Number of discarded echoes: k (1, 3, 5 or 10)
Under disadvantageous conditions (air movement, not perpendicular or bad reflecting surface)
some of the echoes may miss the sensor. Giving immediate attention to this, might lead to
frequent error indication or measurement failures. Therefore the unit would check the measured
distance for verifying that it is within the range.
Measured distance outside the range will be disregarded while calculating the average and leaves
output signal unchanged. The unit can disregard k number of consecutive distance samples. After
that error will be indicated.
If due to bad reflection substantial number of echoes go astray and the number of invalid (incorrect)
echoes, between two valid ones, is smaller than k the unit will work continuously i.e. without indicating
error. The greater the value of k programmed, the less sensitive the unit to invalid echoes but the
reaction time for indication of error will increase. To maintain continuous operation the programmed
range is advised to keep as narrow as possible.
The greater the speed of the target the smaller should the averaging number be chosen. The worse
the reflection of the target the higher value should be chosen for k (number of discarded echoes).
6.2 PROGRAMMING
1. Touch-Magnet Programming
The magnetic screwdriver (with its cap removed) should
beputtothepointsontheenclosuremarkedupwithA
or B according to Figure 10. These steps will follow below
as steps A or B.
Touch-Magnet Programming is only available if it is not
disabled and the PRG wire is free. Disabling can be
programmed both by Touch-Magnet Programming or by
cable contacting, but it can only be released by cable
contacting.
2. Programming with cable contact
The steps A or B A will be represented by connecting
wire PRG with +US or GND respectively.
These connections can be established by the use of
switch or push buttons in accordance with Figure 4. or
by simply connecting cables.
Figure 10
off
on
blinking
Different states within the programming procedure will be
indicated by the three LEDs. Steps A and B (magnet touch,
wire connection) should be maintained till the effect will be
indicated by the relevant change of the LED status.
Red
Yellow
Green
LED
LED
LED
Red
Yellow
Green
Figure 11 Arrangement of LEDs
and interpretation of markings
hold > 2s
A
B
wait
5s
B
A
B
B
A
5s
5s
B
B
A
5s
B
A
X ALearning
1.
Switch off, 4 mA, 0 V
A
X BLearning
2.
Switch on, 20 mA, 10V
A
X TLearning
3.
Far-end bloking
a=1
B
k=1
B
5s
B
Measurement
A
Select
Menu Point
4.
Averaging
number
k = 10
A
A
B
disabled
B
k=5
A
B
A
A
B
k=3
5s
a = 16
A
B
A
a =8
a=4
A
B
B
5.
Number of
discarded
echoes
enabled
A
A
B
B
6.
Enabling Touch-Magnet
Programming
Completed
Figure 12 Procedure of the programming
For entering programming mode: step A for 2 s
For quitting programming mode: step B
Measurement
Programming mode entered: is indicated by blinking
A
red and going off yellow and green LED s.
Measurement
While in programming mode (with red LED blinking) Invalid echo
accepted
Learning
every step A will change the Menu Points. The six
Figure 13 Indication while learning
different Menu Points are indicated by combination
of states of yellow and green LEDs.
Selecting the Menu Point the unit will after 5 s automatically (without step A or B) be ready for
programming, which will be indicated by the red LED. In the first four Menu Points learning should be
initiated by step A. Blinking of the green LED indicates the measurement during the learning. On
getting a valid echo the yellow LED will lit and the relevant numeric value of the measured distance
appears on the output (for instance with measured distance of 0.4 m the output will be 0.4 mA or 0.4
V!) With repeated step A new distance can be learned and the old one will be overwritten. Step B
finalizes learning and results in return to Menu Point. Step B represents quitting Programming Mode.
Parameters a and k can be programmed in Menu Points 4 and 5
Touch-Magnet programming is enabled or disabled in Menu Point 6 by step A. Disabling of the
Magnet-Touch Programming by use of the magnet is completed after quitting Programming Mode.
During Touch-Magnet Programming the Wire-Contact Programming is disabled and vice versa.
If the unit is left in Programming Mode by mistake it will automatically quit after 10 seconds.
If the unit will be powered up with PRG wire connected to +Us the factory setting will
automatically be reloaded.
Example: assignment of XB
Place a target in a distance (XB) from the unit to which you want to assign 20 mA or 10 V or
triggering switch-on. In the learning procedure distance of XT will be disregarded.
Put the magnet to point A till the red LED will begin to blink (entering first Menu Point in the
Programming Mode). Remove the magnet and put it again to point A to step into the second
Menu Point. The red LED will be blinking, the yellow one will go off and the green one go on
(second Menu Point entered). Remove the magnet and wait (approximately 5s) until the red
LED begins to blink. (ready for learning). Put the magnet again to point A (learning started).
Green LED starts to blink (representing measurement) then goes off (measurement completed)
yellow LED will lit for short (valid echo). Learning has been completed if the red and yellow is on
and green is off. Put, remove and put again the magnet to point B to quit Menu Point and
Programming Mode respectively.
7. Maintenance and Repair
The unit does not require maintenance on a regular basis. In some very rare instances however,
the transducer may need a cleaning from deposited material. This must be carried out gently,
without scratching or pressing the surface of the transducer.
Repairs during or after the warranty period are carried out exclusively at the Manufacturers.
Equipment sent back for repair should be cleaned or neutralised (disinfected) by the User.
8. Storage
Ambient temperature:
Relative humidity:
-20...+70 °C
max. 98%
9. Warranty
HiTECH provides warranty for the period of 2 (two) years.
All repairs under guarantee are performed in the Manufacturer’s premises.
Cost of dismantling, reinstalling and transport are borne by the Customer.
Claims for guarantee are not valid in respect of damages during transportation, failures
due to abnormal usage, breakage, disaster, or incompetent installation or operation.
HiTECH
Technologies, Inc.
301 Oxford Valley Road - Yardley, PA 19067-7706
Tel: 215. 321. 6012 - Fax: 215. 321. 6067
Toll Free: 800.755. 4507 or 866. DrLevel
Email: [email protected]
www.DrLevel.com or www.hitechtech.com
HiTECH Technologies, Inc. - Copyright © 2000
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