9905-976

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The ProTech 203 Overspeed Protection System model 9905-976 reads three individual magnetic pickups and performs three individual speed calculations

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  • Part Number: 9905-976
  • SKU: 9905976WO
  • Manufacturer: Woodward
  • Series: ProTech 203 Overspeed Protection

9905-976

    Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures
  • 4.50 (2)
  • Click a star to rate this product
    Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures
  • 4.50 (2)
  • Click a star to rate this product
The ProTech 203 Overspeed Protection System model 9905-976 reads three individual magnetic pickups and performs three individual speed calculations

AVAILABILITY:

CALL FOR AVAILABILITY

3 Year Warranty: Learn More
Sell Surplus: Have a 9905-976 to sell? Sell Now
Exchange Credit: Learn more about our exchange credit program
  • Part Number: 9905-976
  • SKU: 9905976WO
  • Manufacturer: Woodward
  • Series: ProTech 203 Overspeed Protection

9905-976 Technical Specifications

Dimensions W482.6 x H310.4 x D142.7 mm
Features 12 keys and 1 knob per module
Input Voltage 120 Vac/dc = 88–132 Vac, 90–150Vdc, 7.25W
Keypad/Display 1 Keypad and Display per Module
Manufacturer Woodward
Model CPU Fail Indication
Operating Temperature –25 to +60 °C
Standards CPU Fail Indication
Weight Less than 15 lbs

Product Description

Three separate speed calculations are performed and put to a two-out-of-three hardware vote to determine whether overspeed conditions have been met. If an overspeed condition is detected by only one of the three speed-sensing units, only that unit will trip. If the condition is detected by two of the three units, a trip relay is activated for the entire 9905-976 system. This is an energize-to-trip model in the Woodward ProTech 203 series.

 

All three units are interfaced with a magnetic pickup (MPU) to monitor prime mover speed. From speed sampling (done every 5 ms) to the activation of a trip relay, the ProTech 203 9905-976 overspeed protection system has an overall response time of 40 ms max. Coupled with the modular design and voting configuration of this device, the 9905-976 system minimizes prime mover downtime.

 

Units A, B, and C in model 9905-976 are identical. They each have a 120 Vac/dc power supply and an operator interface.  Although these units are programmed separately, they need to have identical parameters set for the overall system to function correctly.  

 

A few of the tunable parameters include:

  • Trip speed set point (250 rpm minimum, 25,000 rpm maximum)
  • MPU fail set point (100 rpm minimum, 25,000 rpm maximum)
  • Trip on MPU failure

 

A full list of tunable parameters for the 9905-976 model is in Woodward ProTech 203 manual 85195. This manual also contains additional device specifications and programming information.

Reviews For 9905-976
Internal Review

The engine, turbine, or other types of prime mover should be equipped with an Overspeed Shutdown Device to protect against runaway or damage to the prime mover with possible personal injury, loss of life, or property damage. - AX Control Inc. Technician

Repair Services For 9905-976

Type Lead Time Price Action
Repair Service 1-2 weeks $5066

Our highly skilled technicians can repair your 9905-976. 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

9905-976 Manuals, White Papers, Data Sheets, and Troubleshooting