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Speed Sensor Kit for NEMA C Motor Face Mount
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OMDC-CF

Speed Sensor Kit for NEMA C Motor Face Mount

  • For All NEMA C Face Motors
  • Molded Sensing Disk, Impervious to Dust, Oil and Water
  • Output: NPN Open Collector Capable of Sinking 20 mA DC
  • Operating Temperature: -40 to 125°C (-40 to 257°F)
OMDC-CFData Sheet

Data Sheet
Speed Sensor Kit for NEMA C Motor Face Mount OMDC-CF OMDC-CF
Product Overview
  • Control Output Open Collector
  • Current Sink, Max 20 mA
  • Height 238 mm
  • Mounting Orientation Bolt-Mounted
  • Operating Temperature, Max 125 °C
  • Operating Temperature, Min -40 °C
  • Series ID OMDC-CF
  • Supply Voltage 4.5 to 24 Vdc

Supported Applications

The Omega OMDC-CF Series is a NEMA C Face Motor Speed Sensor Kit designed for monitoring motor speeds when direct access to the motor shaft is impossible. The kit mounts directly to the motor's NEMA C face and produces a square wave output suitable for closed-loop controls or digital devices.

Operating Conditions & Performance

The sensor operates on an excitation voltage of 4.5 to 24 VDC, with the load capable of sinking 20 mA DC. The ambient operating temperature range is -40 to 125°C (-40 to 257°F). The molded sensing disk included in the kit is impervious to dust, oil, and water.

Maximum air gap dimensions vary by model:

  • H1/J1: 6.35 mm (0.25 in)
  • H2/J2: 4.57 mm (0.18 in)
  • H15/J15: 3.18 mm (0.125 in)
  • H60/J60: 0.254 mm (0.010 in)

Configuration Options

The series is available with different pulses per revolution to accommodate various frame sizes and resolution needs.

  • Pulses Per Revolution: 1, 2, 15, or 60
  • NEMA Frame Sizes Supported:
    • H Series: NEMA 56C face motor sensor kit
    • J Series: NEMA 143TC, 145TC, 182C, and 184C frame sizes (with ⅞" dia. shaft)
  • Electrical Connection: Conduit Box ½ NPT
  • Output Signal Type: NPN Open Collector with square wave output

The kit includes a sensing disk, motor race ring, mounting bolts, and an operator's manual. The electrical hookup diagram specifies RED for Vcc (4.5 to 24 VDC), BLUE for signal output, and BLACK for common.

Physical Dimensions

  • Sensing Disk Diameter: 149.2 mm (5.875 in)
  • Sensing Disk Hole Diameter: 50.8 mm (2.000 in)
  • Housing Width: 200 mm (7.875 in)
  • Housing Height: 238 mm (9.375 in)
  • Housing Depth: 102 mm (4.000 in)
  • Mounting Hole Spacing: 19 mm (0.750 in)
  • Mounting Hole Diameter: 10 mm (0.390 in)

Key Product Differences

The OMDC-CF series is divided into two primary model families based on the NEMA frame size they accommodate.

  • H Series Models: Designed for NEMA 56C face motor sensor kits. Available in H1, H2, H15, and H60 configurations corresponding to 1, 2, 15, or 60 pulses per revolution.
  • J Series Models: Designed for larger frame sizes including NEMA 143TC, 145TC, 182C, and 184C with a ⅞" diameter shaft. Available in J1, J2, J15, and J60 configurations corresponding to 1, 2, 15, or 60 pulses per revolution.
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