SAE IT-systems
Im Gewerbegebiet Pesch 14 50767 Köln, Deutschland
0221 598080 0221 5980860 DE812996839 Dipl.-Ing Joachim Schuster
Expansion module DSO-1


Switch commands safely

The DSO-1 module (DSO = Distributed System Operator) enables reliable switching of commands in power networks with 1 from N monitoring, measuring circuit testing and cascading to command groups. The command relays are 1.5-pole and routed via release relays.

Activation can take place in single or double commands:

  • 1 of n monitoring of commands (multi-stage)
  • Command and release relays
  • measuring circuit testing for monitoring the externalcontact multiplying relay coil resistance
  • Individually adjustable external circuit resistors for every intermediate relay
  • 1.5-pole variant of the command card
  • individually adjustable suppression of imperfection time
  • Individually adjustable post command lag time
  • Cascading of multiple cards into command groups

Technical Data


  • 6 command relays, 1.5 pole, up to 72 V DC
  • 6 return information inputs, 24 - 60 V DC ±20%

Power supply

  • Internal over T-BUS, approx. 250 mA per module, up to 4 modules
  • approx. 70 mA @ 24V DC supply
  • external process voltage required on X.9/10


  • Plastic with integrated I/O, top-hat rail installation
  • 22.5 x 105 x 115 mm (W x H x D)

SAE IT-systems GmbH & Co. KG
Im Gewerbegebiet Pesch 14
50767 Cologne, Germany

Phone: +49 221 / 59 808-0
Fax: +49 221 / 59 808-60
E-Mail: info( at )

Do you have technical problems?
Don't hesitate to contact us!

Phone: +49 221 / 59 808-55
E-Mail: service( at )

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Repair application
If you want to report a faulty or damaged component, please use our repair application.

If you have questions, please contact our Repair and Service department: +49 221/59808-55