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Control unit D-UG 660

D-UG 660
Control unit

Control unit for high requirements, for combination with optical flame sensors. For monitoring gas, oil and coal flames, including in complex multi-burner plants. 

Functionality: Optical flame monitoring

  • Different presettings for FFDT and flame intensity switching threshold
  • Consistent two-channel design for maximum safety combined with high availability
  • Two flame ON/OFF contacts for the flame signal (normally open and normally closed)
  • Connection of all DURAG GROUP optical flame sensors possible
  • Two analogue outputs 0/4 … 20 mA
  • Same device can be used for different combustion situations
  • Quick changeover if operation of the combustion plant changes
  • Complex combustion plants including plants with many burners and different fuels
  • Combustion processes in continuous operation
  • Technical data
Operating modeIntermittent operation and continuous operation
Functional SafetySelf-monitoring and fail-safe, supports safety chains up to SIL 3
Switching thresholdFlame intensity (100 steps)
Local displayAlphanumeric LC display
Number of flame sensors that can be connectedMax. 2
Flame failure detection time (FFDT)1 … 5.5 s (in increments of 0.5 s)
Combinations of switching threshold and safety time that can be preset3
Flame ON/OFF contacts1x NO contact, 1x NC contact
Ready for operation contacts1x NO contact, 1x NC contact
Switching capacity of relay contactsMax. 250 VAC, 2 A
Analogue outputs2x 0/4 … 20 mA (adjustable), load max. 750 Ohm
Electrical data24 VDC, PELV; 115/230 VAC; 20 W
Ambient conditions-20 … +60 °C
Degree of protectionIP00
Dimensions19″ plug-in, 3 RU, 1 HP
WeightApprox. 1 kg
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