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3 year warranty

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Energize-to-Trip 9905-995 Unit from Woodward ProTech 203 Series. Displays the actual speed from each speed probe, the highest speed signal, as well as features online testing with a modular design.



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  • Part Number: 9905-995
  • SKU: 9905995WO
  • Manufacturer: Woodward
  • Series: ProTech 203 Overspeed Protection

9905-995 Technical Specifications

Dimensions W482.6mm x H310.4mm x D142.7mm
Display Operating Temperature –15 to +60 °C
Features CPU and MPU Failure Indication
Input Voltage 24 Vdc = 18–32 Vdc, 7.25 W
Keypad/Display 3 Keypads and LCDS | 2 Lines of 16 Characters
Manual Woodward 85196
Model Energize-to-Trip
NEMA Rating 4 and IP54
Operating Temperature –25 to +60 °C
Standards Adequate ventilation for cooling and space for servicing

Product Description

This Woodward ProTech model activates a trip relay when overspeed conditions are detected by a two-out-of-three hardware vote. If conditions are detected by only one of the three speed-sensing units, that unit will trip but the rest of the system stays online. Model 9905-995 is one of the energized-to-trip models in this ProTech overspeed protection series, so during normal operations, voter relays are in the de-energized state.

The 9905-995 overspeed protection device must be installed in a location that provides adequate ventilation for cooling and where it can maintain an operating temperature range of –25 to +60 °C. This device is sensitive to vibration and electromagnetic interference, and therefore should also be installed somewhere it is protected from high-current or high-voltage devices. A comprehensive look at the location requirements of models 9905-995 is in Woodward ProTech manual 85196.

Three identical speed-sensing units use magnetic pickups (MPUs) to monitor prime mover speed. Each unit has its own 24 Vdc power supply and its own operator interface, complete with an LCD, keypad, LED indicators, and a potentiometer. This interface is where everything from programming to troubleshooting takes place.

During normal operation, the LCD displays information for monitoring each unit. If an error occurs, or if a unit trips, the LCD will display an error code. Events such as a failed MPU or a failed CPU will also trigger an LED indicator light.  A tripped unit will activate both an LED and an alarm output.

Error codes, tunable parameters, and general operation information are also in manual 85196.

Reviews For 9905-995

Internal Review

Each 9905-995 (as well as the entire series) of the ProTech 203 system includes a touchpad, a two-line by 16-character LCD display, and a potentiometer for adjusting the overspeed test frequency. - AX Control Inc. Teach Team

Repair Services For 9905-995

Type Lead Time Price Action
Repair Service 1-2 weeks $4564

Our highly skilled technicians can repair your 9905-995. 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

9905-995 Manuals, White Papers, Data Sheets, and Troubleshooting