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3 year warranty

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ProTech 203 9907-347 from Woodward displays the actual speed from each speed probe and online testing with a modular design. This series feature Hot Replacement modules



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  • Part Number: 9907-347
  • SKU: 9907347WO
  • Manufacturer: Woodward
  • Series: ProTech 203 Overspeed Protection

9907-347 Technical Specifications

Dimensions W19in x H12.244in x D5.62in
Features Key Lock
Input Voltage 24 Vdc = 18–32 Vdc, 5.12 W
Keypad/Display (3) Keypad and Display
Manual 85206 (F)
Manufacturer Woodward ProTech
Model De-energize-to-Trip
Operating Temperature –13 to +140 °F
Standards NEMA 4/4x, IP54
Weight Less than 17 lbs

Product Description

If you’re looking for a de-energize-to-trip overspeed protection system, the Woodward ProTech 203 series of overspeed protection devices have many available options for compatibility with a wide range of power supply combinations. This device, ProTech model 9907-347, is one of 24 Vdc versions. Each speed-sensing unit in this system has a separate power supply.

Because this is a de-energize-to-trip system, voter relays are actuated if there is a loss of power to this ProTech 203 overspeed protection system. Two voter relays are actuated by each speed-sensing unit. These units are in an enclosure that is NEMA 4 and 4X certified (North America) and IP54 rated (Europe).

Model 9907-347 may require the use of double-shielded wire or other precautions if it is installed near devices that produce electromagnetic interference, such as high-voltage or high-current devices. Additional information on this and other precautions is in Woodward ProTech 203 Overspeed Protection System Manual 85206.

On the front panel of the enclosure are three operator interfaces, one for each unit. The two-line LCD displays the 9907-347 tunable parameters, such as Trip Speed Set Point and MPU Failed Timeout. Present Speed is the first displayed, the rest are cycled through using the touchpad below the screen.

In the event of an error or any event requiring attention, the LCD will display an error code. Certain situations, such as an MPU failure or CPU failure, will trigger an LED indicator to illuminate. There is also an alarm output to indicate a tripped unit.

Reviews For 9907-347

Internal Review

Keep plastic, vinyl, and Styrofoam materials (such as plastic or Styrofoam cups, cup holders, cigarette packages, cellophane wrappers, vinyl books or folders, plastic bottles, and plastic ash trays) away from the control, the modules, and the work area as much as possible. - AX Control Inc. Team of Technicians

Repair Services For 9907-347

Type Lead Time Price Action
Repair Service 1-2 weeks $4934

Our highly skilled technicians can repair your 9907-347. All of our repairs come with a 3 Year AX Control Warranty. Please contact us for additional information about our repair process. To receive the repair pricing and lead time listed above please process your repair order via our website. The following repair options may be available upon request:

  • 48-72hr Rush Repair
  • Detailed Repair Reports
  • AX Control Certificate of Warranty

AX Control Warranty Info

All products we sell are backed by our unparalleled warranty. A warranty certificate will be provided with your order upon request.
All PLCs, HMIs, and Turbine Control Boards: 3 Years
All AC/DC and Servo Drives: 2 Years
All Motors: 1 Year
Learn More