• Typical connection diagram
• Overall and rear panel projection mounting dimensions
• Front panel escutcheon plate dimensions
• Front panel cutting and drilling dimensions, panel mounting
• Front panel controls and indicators
• BESTCOMSPlus® overview

• Opens 10MB 300+ page PDF-9440300990

• Specifications list

• HMI - All settings except Programmable Logic are accessible via HMI.
• BESTCOMSPlus® - All settings are accessible via this method.

• Mechanical - Mounting holes and cutout are the same as the DECS-200.
• Electrical - Electrical specifications are the same or better than the DECS-200.
• Communications - Communications to the DECS-250 uses USB, RS485 (Modbus™ same registers), J1939 Canbus, Ethernet and other protocols. Please refer to instruction manual for specific information.
• Dual DECS tracking communications - This unit is fully backward-compatible for dual DECS tracking schemes.

• Interconnections
• Specifications

Contact Technical Support

Refer to the Instruction Manual for detailed listing of safety concerns. This device should be installed and operated only by qualified/authorized personnel. The proper grounding of this unit is required for noise immunity and safety. To prevent damage to the unit, observe proper grounding techniques.

Check control power input proper levels and polarity are applied to terminals 7 (Batt +) and 8 (Batt -) or terminals 9 (L) and 10 (N).

• Check control power input proper levels and polarity are applied to terminals 7 (Batt +) and 8 (Batt -) or terminals 9 (L) and 10 (N).
• Check power input to ensure proper levels are applied.
• Check residual generator voltage (if shunt powered).
  • Flash field as required. Use blocking diodes and current limiting resistors as required.
• Verify all electrical connections.
• Verify start contact signal is applied to the unit.
• Verify proper settings have been programmed into the unit.

• Verify proper phasing and polarity of sensing voltage.
• Verify proper contact inputs are present and aligned with programmable input logic.
• Verify nominal current settings, including CT ratios.
• Verify proper gain settings.
• Verify proper mode of operation is selected.

• Verify proper gains, including PID and loop gains.
• Verify proper contact inputs are present and the proper mode of operation has been set.
• Verify there is no input at the auxiliary input terminals.

• Verify proper gains, including PID and loop gains.
• Verify proper contact inputs are present and the proper mode of operation has been set.
• Verify there is no input at the auxiliary input terminals.

Call 1-618-654-2341 or email USATechSupport@basler.com Technical Support available 24 hours a day, 7 days a week

Call 1-618-654-2341 or email USATechSupport@basler.com Technical Support available 24 hours a day, 7 days a week

Call +86 512 8227 2888 or email chinatechsupport@basler.com Technical support is available from 8:30am to 5:00pm (GMT+8) Monday through Friday

Call +65 68 44 64 45 or email singaporetechsupport@basler.com Technical support is available from 9:00am to 6:00pm (GMT+8) Monday through Friday