Dister DT20-11/11 - Anti collision device



The DISTER is a FMCW-Radar and works in the frequency range from 24,000 – 24,250 GHz. 
The antenna characteristics is 11° (+/- 5,5°) vertical and horizontal.

The device is able to detect objects within a distance from 0,2 m up to an adjustable distance from 2 to 40 m. It will only detect objects which have a relative movement with a minimum speed of  5 cm/sec (3 m/min) to the radar.

Object detections will be reported by open-collector outputs.

The unit has 2 outputs which can be used for example as slow down or stop features.
We can program them to the needed values of each application.
The 2 outputs are allocated at a 4-pin RSF4 standard connector. 


Dister anti-collision device has a self test checking routine.
After power on and during operation this program will check all functions of the system.
Malfunctions will be reported. 

This device was especially developed for the anti-collision and start up protection in the field of fast moving marine port cranes, for example Straddle Carrier, RTGC, RMGC, STS and OHBC.

Special brackets are helpful for easy mounting.

For re-fitting of existing equipment, an interface box with different input voltages and galvanically isolated outputs is available.


Because of its physical properties,
Dister device must not be used for personal safety or emergency off functions.


Working range :    0,2m threshold (in 1m steps from 2 to 40m adjustable)
Sending frequency :    24,000 – 24,250 GHz
Response time :    < 50ms
Connection :    4-pin connector M12x1, RSF4 compatible
Transmitting power :    < 20dBm (EIRP) max.
Antenna characteristics :   11° (+/-5,5°) vertical and horizontal
Outputs :    2 Open-collector Outputs with each 50mA
Hold time of the outputs :    ca. 0,1 …. 1 sec depending of object dimensions
Power supply :
Current consumption :
  24VDC +/- 20% 
typ. 130mA, plus current for the Open-collector outputs
Readiness time after power on :    approx. 10 seconds
Environment :     Working temperature : -40°C to +85°C
     Storage temperature: -40°C to +85°C
Material :    Lower Housing Section : ALg, black anodized
     Housing cover : POM- Plastic black colored
Protection :    IP 67
Weight :    approx. 600 g
Dimensions :   Housing : 100 x 100 x 42 mm
Mounting drillings/ Housing back side : 4 x M4-Tread, 10 mm deep - quadratically arranged 82 x 82 mm


Connection diagram

Antenna characteristics

Protective dome






DISTER DT20-11/11 : Anti-collision device


Download Product Data Sheet

Réalisation SYSTONIC 2008