DOL 26SCR Series Manual

Technical User Guide
DOL 26SCR Serial
Capacitive sensor
For other language variants of this document we refer to www.dol-sensors.com or
your local dealer.
dol-sensors a/s – Agro Food Park 15 – DK-8200 Aarhus N – T: [phone] – F: [phone] – www.dol-sensors.com

Technical User Guide
2www.dol-sensors.com DOL 26SCR Serial
1 Product description
DOL 26 is a capacitive sensor for detection of loose and solid materials.
SCR output versions are available in 2-wire versions.
DOL 26SCR Serial is suitable for serial connection of sensors on the same load.
The products are suitable together with contactors, relays, PLC’s and similar within the agricultural and indus-
trial sectors. DOL 26 is immune to EMI, short circuits and any overload. The mechanical design makes DOL 26
ideal for integration into applications with limited space. The full-return option is especially suited for feeding
pans. Very low power consumption in off state – enables possibility for sensors working in parallel on the same
contactor. Unique possibility for controlling cross auger systems.
2 Mounting guide
Smooth version mounted
within a PG 21 gland
Threaded version mounted with M18 nut. Mounting restrictions for non-flush (side sensi-
tive version)
3 Installation guide
Installation, servicing and troubleshooting of all electrical equipment must be carried out by quali-
fied personnel in compliance with the applicable national and international standard EN 60204-1
and any other EU standards that are applicable in Europe.
DOL 26SCR
DOL 26SCR:
Connect the sensor in series with the load. The polarity is unimportant.
The sensor is protected against overload and short circuit. If the output cur-
rent exceeds the nominal output current, the output function is switched off.
Remove the short circuit or choose a smaller load to remove the error. The
current limitation error is indicated on the sensor by double flashes followed
by a pause.
LED indication DOL 26 SCR seriel status
RED OFF Sensor output is OFF
RED slow flashing Sensor delay is active
RED double flashing Sensor load error (overcurrent protection is active)
MaxRunTimer is active (optional)
RED ON Sensor output is ON

Technical User Guide
DOL 26SCR Serial www.dol-sensors.com 3
Adjustment
DOL 26 has trimmers with different functions depending on its type for adjustment.
4 Technical data
DOL 26SCR Serial
Electrical
Supply voltage (Ue) V AC/DC 20 - 280
Frequency Hz 47 - 63
Max. Current mA AC/DC 500
Inrush current A ˂ 2,5A @ 30 ms
Direct connection to Ue
(current >> 500 mA) with-
out damage to the sensor
times ˃10
Min. ON current mA AC/DC
RMS
< 10 (Ue = 20 - 280)
OFF current mA AC/DC
RMS
< 3 (Ue = 20 - 280)
Voltage drop, output ON V AC/DC ˂ 6
Specifications
Detection speed Hz ˂ 15
Time delay, start-up ms 265
Time delay, ON* s ˂ 0.065 - 600
Time delay, OFF* (ad-
justable)
s 0.1 - 600
Activation distance (Sn)*
(adjustable)
mm
(inches)
0 – 12 (0 – 0.47)
Safe activation distance mm
(inches)
4 – 10 (0.16 – 0.39)
Repeatability % 5
Hysteresis % 4 - 10
MaxRunTimer* (3 set-
tings)
s Off / Period 1 / Period 2
Number of single turn
240° potentiometer
0, 1 or 2
Number of outputs 1
Type of output NO or NC
Indicator for sensor out-
put state ON or Error
Red LED
Mechanical
Sensor length mm
(inches)
89 (3 1/2)
Sensor diameter (d) mm
(inches)
18 (11/16)
Cable dimensions mm2
(AWG)
2x0.5 (2xAWG20)

Technical User Guide
dol-sensors a/s – Agro Food Park 15 – DK-8200 Aarhus N – T: [phone] – F: [phone] – www.dol-sensors.com
DOL 26SCR Serial
Cable length m(ft.) 2 (6.6)
Cable type UL2517
Weight incl. cable g (oz) 170 (6)
Environment
Operating temperature °C (°F) -20 to +70 (-4 to +158)
Operating temperature,
USA and Canada, le <
300mA
°C (°F) -20 to +70 (-4 to +158)
Operating temperature,
USA and Canada, le <
500mA
°C (°F) -20 to +65 (-4 to +149)
Storage temperature °C (°F) -40 to +80 (-40 to +176)
Protection class IP 69k (DIN 40050-9)
NEMA 1, 3, 4, 6, 12, 13
Approval CE, UL, C-UL
*Option – can be changed / introduced upon request. See the current functions on the product label.
604354 • 2022-08-22 • en-US • Made in Denmark