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3 year warranty

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Woodward Energize-to-Trip ProTech 203 Overspeed Trip Device 9905-980 that senses prime mover speed through three MPUs. Features Audible and Visible Alarm Systems.



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  • Part Number: 9905-980
  • SKU: 9905980WO
  • Manufacturer: Woodward
  • Series: ProTech 203 Overspeed Protection

9905-980 Technical Specifications

Dimensions W19in x H12.244in x D5.62in
Display Operating Temperature +5 to +140 °F
Features MPU Fail Option and Timer
Input Voltage 220 Vac = 180–264 Vac, 7.25W
Keypad/Display 3 Keypads, Knobs, and Displays
Manual 85195
Manufacturer Woodward Governor
Operating Temperature –13 to +140 °F
Standards NEMA 4 and IP54
Weight 13 lbs 1 oz

Product Description

There are three individual speed-sensing units in this overspeed protection device. Units A, B, and C are identical. Each one has:

  • Magnetic pickup (MPU) monitoring prime mover speed
  • 220 Vac power supply
  • LCD displays nine parameters, such as the unit’s current speed
  • Keypad
  • LED functional status indicators
  • Alarm output

The three units are configured for a two-out-of-three hardware vote to detect overspeed conditions and activate a trip relay when necessary. If only one of the three units detects an overspeed condition, that unit will trip while the other two remain online and in control of the system, and continue providing an accurate output. 9905-980 is a de-energize-to-trip model.

Hot replacement, online testing of individual units, and continued operation with a single-tripped unit, are all features made possible by the modular design of parts 9905-980. Additional features of this ProTech 203 overspeed protection device include LED indicators, alarm outputs, and a locked enclosure that meets IP 65 and NEMA 4 standards.

The locked enclosure of the 9905-980 system helps prevent unauthorized access to switch between MONITOR mode and PROGRAM mode.  The system will operate in either mode, but should only be put in PROGRAM mode when the unit needs to program or changes need to be made to any of the system’s tunable parameters, such as Trip Speed Set Point and MPU Failed Set Point.

Product info for Woodward ProTech 203 model 9905-980 can be found in manual 85195, with additional relevant information in manuals 82715, 82510, and 50532.

Reviews For 9905-980

Internal Review

Avoid the build-up of static electricity on your body by not wearing clothing made of synthetic materials. Wear cotton or cotton-blend materials as much as possible because these do not store static electric charges as much as synthetics. If you avoid these then half of the problems this unit faces immediately disappear. - AX Control

Repair Services For 9905-980

Type Lead Time Price Action
Repair Service 1-2 weeks $4077

Our highly skilled technicians can repair your 9905-980. 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

9905-980 Manuals, White Papers, Data Sheets, and Troubleshooting