Bitronics M651 Multifunction SCADA Transducer

MultiFunction SCADA Transducer

Simple Wiring and Configuration

The M651 allows primary and advanced settings configuration through the Ethernet service port. Pre-set register/point sets coupled with the universal power supply and universal wiring make it easy to go from the box to up and running in no time. The external, split core CTs option streamlines upgrade and retrofit applications as the CT circuit does not need to be interrupted.

The M651 transducers are simple to set up and use, and provide the following features:


  • DNP3 or Modbus protocol available via configurable RS-232/RS-485 serial port
  • No need for PC software – Ethernet service port provides access to web server in the instrument so meters can be interfaced with just a web browser for viewing and configuration
  • Available Ethernet protocol support for DNP3 or Modbus TCP
  • Optional fiber port that replaces standard Ethernet service port and includes Modbus and DNP3 Ethernet protocol support
  • Optional transducer output to interface with older generation RTUs
  • An option for both standard secondary “optimal resolution” or primary units makes communications with SCADA/RTU more flexible


  • Full basic measurement set with optional demand and harmonic values (M3)
  • 0.2% revenue accuracy
  • .001Hz accuracy
  • Updates every 100ms

Built for the Substation

  • Wide-range universal power supply for all substation installations
  • Rugged aluminum case
  • Reduce inventory cost as one model covers all wiring options
  • Easy to mount with standard transducer footprint or through existing 4” round hole


  • Digital front-end to SCADA systems
  • Intelligent Electronic Device (IED) interfacing to RTUs and PLCs
  • Plant equipment, line, power & energy monitoring
  • Voltage control, power factor control, and load shedding


Dimensions: 5.25” (w) x 4.0” (h) x 6.4”(d)

Weight: 1.8 lbs.

Power Supply: Universal 48-250V dc/55-240V ac nominal

Current Inputs: 1 or 5A nominal to maximum of 2A or 10A (2x overload)

Voltage Inputs: 120V ac nominal, 45-65Hz


  • Optional Configurable RS-232/RS-485 port , configurable from 9600bps to 115.2kbps
  • Standard RJ45 10BaseT/100BaseTX port for service port functions, optional Modbus or DNP3 TCP/IP support
  • Optional LC 100Base FX fiber port with Modbus or DNP3 TCP/IP support

Optional transducer output: Three 0-1mA (active) or 4-20mA (loop powered, passive)


  • Operating temperature range -40 to 70C, storage temperature -40 to 85C
  • Humidity 0-95% non-condensing
  • Surge withstand to ANSI/IEEE C37.90.1: 2002
  • UL/CSA Recognized, File Number E164178, CE Marked
Available Measurements
Available Measurements M651 B3 M651 M3
Amps A, B, C Residual X X
Demand/Max. Amps A, B, C Residual X X
Volts AN, BN, CN, NG, AB, BC, CA X X
Fundamental Frequency X X
Watts A, B, C, Total X X
VARs A, B, C, Total X X
VAs A, B, C, Total X X
Power Factor A, B, C, Total X X
Watt-Hrs Normal X X
Watt-Hrs Reverse X X
Watt-Hrs Net X X
VA-Hrs X X
VAR-Hrs Lag X X
VAR-Hrs Lead X X
Fund. Amps A, B, C, Residual X
Fund. Volts AN, BN, CN, AB, BC, CA X
Phase Angle Amps A, B, C X
Phase Angle Volts AN, BN, CN, AB, BC, CA X
K-factor Amps A, B, C X
TDD Amps A, B, C, Residual X
TDD Denominator A, B, C X
THD Volts AN, BN, CN, AB, BC, CA X
Demand/Max. Fund. Amps A, B, C, Residual X
Average/Max./Min. VARs A, B, C, Total X
Average/Max./Min. VAs A, B, C, Total X
Average/Max./Min. Volts AN, BN, CN, NG, AB, BC, CA X
Displacement Power Factor A, B, C, Total X

IP Address Identity Tool

Inverse Address Recognition Protocol (InARP) is a software utility program available for 50 Series SCADA meters that requests the IP address for a specific MAC address on an Ethernet network. It can also scan for a range of MAC addresses and print the IP address for any devices which respond. The utility requires the WinPcap and Packet libraries which are bundled in the WinPcap “Installer for Windows,” downloadable from  Installation requires  Administrator privileges.  Download the application here.

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