Product Description - DOL 20SCR Modo De Empleo Técnico

EN – TECHNICAL USER GUIDE

PRODUCT DESCRIPTION

DOL 20SCR is a capacitive sensor for
detecting loose and solid materials.
The sensor has a 2-wire connection (ON or
OFF), which is protected against higher
current (Ie) than specified, incl. connection
/ short circuit directly to supply voltage.
The sensor comes as standard with two
trimmers for adjusting the sensitivity and a
delayed disconnection. See the information
on the product label for special variants.
APPLICATIONS:
• Level control in silos, containers and
feed lines.
• Emptying/filling control.
• Alarms for feed accumulation/errors in
transport systems, e.g. worm conveyor.
MOUNTING METHODS, FIG. 1:
Measurement through plastic material:
The sensor with mounting clip can be used
for plastic types with a minimum of
moisture absorption.
Fit the sensor so that it is protected from
the build-up of dust and the impact of
water on the detection area of the sensor,
including condensation.
If there is significant wear, the sensor
should be mounted behind a wear plate
made of a suitable plastic material.
Specification
Supply voltage (U )
e
Frequency
Max. current (I )
e
Direct connection to U (current >> 500 mA)
e
without damage to the sensor
Min. ON current (I )
m
OFF current (I )
r
Voltage drop (U )
d
Time delay, start-up
Time delay, ON*
Time delay, OFF* (adjustable)
Activation distance (S )* (adjustable)
n
Safe activation distance (S )*
a
Repeatability (R)
Hysteresis (H)
MaxRunTimer* (3 settings)
Indicator for sensor ON
Temperature, operation
Temp., operation, US and Canada, I
Temperature, storage
Protection class
Cable length*
Cable conductor size
Approvals
*: *Option – can be changed / introduced upon request. See the current functions in the product label.
For more info: www.dol-sensors.com
Dol Sensors Hedelund 4, Glyngøre
MOUNTING, FIG. 2:
The sensor is not side sensitive, but to avoid
incorrect detection as a result of uncertainty
with regard to mounting, it is best to keep the
sensor away from any metal components, see
the dimensions in figure 2. (5 mm gap).
ELECTRICAL MOUNTING, FIG. 3:
The sensor must be connected as per the
diagram in figure 3.
FUNCTIONAL DESCRIPTION, FIG. 4:
When there is material in front of the sensor,
the output is in the reference position (OFF).
When the material disappears, the timer
starts, and the output will change to (NC) after
the set delay.
The status of the sensor is indicated with a
yellow LED. Other functions are possible for
special variants.
See product label for current functions.
If the max. current (Ie) is exceeded, the sensor
will try to change from OFF to ON 6 times, at
the same time as quick pairwise yellow LED
flashes occur.
SENSOR DIMENSIONS, FIG. 5
MAINTENANCE:
If the sensor is located in a particularly dirty
environment, it may be necessary to clean the
area around the sensor. Otherwise, no
additional maintenance is required.
Parameter
20 - 280
47 to 63
500
> 10
< 10 (U = 20 - 90)
e
< 6 (U = 90 - 280)
e
< 3 (U = 20 - 90)
e
< 1 (U = 90 - 280)
e
< 6
< 150
< 200
0.1 – 600
0 - 12 (0 - 0.47)
4 - 10 (0.16 - 0.39)
5
4 - 10
Off / Period 1 / Period 2
Yellow LED
-20 - +70 (-4 - +158)
< 300 mA -20 - +70 (-4 - +158)
e
-40 - +80 (-40 - +176)
IP69k
NEMA 1, 3, 4, 6, 12, 13
1.5 (4.9)
2 x 0.5 (2 x AWG20)
CE
UL
C-UL
7870 Roslev Denmark
1
2
5 mm
3
DOL 20SCR
Unit
VAC RMS / VDC
Hz
4
mA RMS / mA DC
Times
Sensor
mA RMS / mA DC
mA RMS / mA DC
LED
V RMS / V DC
ms
ms
Switch
s
mm (inches)
mm (inches)
%
5
%
s
16 mm
°C (°F)
°C (°F)
°C (°F)
m (ft.)
2
mm
Tlf. +45 72 17 55 55 Fax +45 72 17 59 59
5 mm
Load
ON
OFF
ON
OFF
69 mm
www.dol-sensors.com