9905-989

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Model 9905-989 from Woodward displays the actual speed from each speed probe, displays the highest speed signal, as well as online testing with a modular design

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  • Part Number: 9905-989
  • SKU: 9905989WO
  • Manufacturer: Woodward
  • Series: ProTech 203 Overspeed Protection

9905-989

    Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures
  • 4.00 (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
  • 4.00 (2)
  • Click a star to rate this product
Model 9905-989 from Woodward displays the actual speed from each speed probe, displays the highest speed signal, as well as online testing with a modular design

AVAILABILITY:

CALL FOR AVAILABILITY

3 Year Warranty: Learn More
Sell Surplus: Have a 9905-989 to sell? Sell Now
Exchange Credit: Learn more about our exchange credit program
  • Part Number: 9905-989
  • SKU: 9905989WO
  • Manufacturer: Woodward
  • Series: ProTech 203 Overspeed Protection

9905-989 Technical Specifications

Dimensions W482.6 x H310.4 x D142.7 mm
Features Overspeed Protection
Input Voltage 24 Vdc = 18–32 Vdc, 7.25 W
Manual Woodward 85196
Manufacturer De-energize-to-Trip
Model De-energize-to-Trip
NEMA Rating 4
Operating Temperature –25 to +60 °C
Weight Less than 14 lbs

Product Description

ProTech overspeed protection model 9905-989 monitors prime mover speed for overspeed conditions. This is done through the use of three magnetic pickups (MPUs) that are interfaced with three individual, identical speed-sensing units. Speed is sampled every 5 ms and units A, B, and C performs separate speed calculations. The subsequent hardware two-out-of-three vote determines whether or not a trip relay is activated. If only one of the units detects an overspeed condition, that unit will trip but the other two will remain in operation and continue to provide an accurate output.

 

The current speed of each unit can be viewed on an LCD for that unit, located on the front panel. The peak speed of each unit can also be viewed here. When an overspeed condition is detected, if the speed exceeds the previously recorded peak speed for that unit, a new peak speed is updated and stored in non-volatile memory.

 

Each unit also has a keypad, LED indicators, and a potentiometer. Model 9905-989’s speed-sensing units are all contained in the same locked, IP 65 (similar to NEMA 4) certified enclosure. Units A, B, and C all come with their own 2Vdc power supply.

 

Some features of the 9905-989 system are made possible by the modular design of the device. The ability for this system to function when one of the units is offline permits continued operations during unit testing (for which there is a built-in self-test), troubleshooting of any unit, and unit replacement. A few additional features of this ProTech model are remote reset, alarm outputs, and LED indicators. Full product specifications for this de-energize-to-trip device are in Woodward ProTech manual 85196.

Reviews For 9905-989
Internal Review

Depending on how the 9905-989 is configured, it can act as a remote start input, or as an indication to a ProTech system that it should be sensing speed greater than the MPU fail set point. - AX Control Tech

Repair Services For 9905-989

Type Lead Time Price Action
Repair Service 1-2 weeks $4268

Our highly skilled technicians can repair your 9905-989. 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
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9905-989 Manuals, White Papers, Data Sheets, and Troubleshooting