9905-994

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Woodward De-energize-to-Trip ProTech 203 Overspeed Trip Device 9905-994 that senses prime mover speed through three MPUs. Features Audible and Visible Alarm Systems.

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  • Part Number: 9905-994
  • SKU: 9905994WO
  • Manufacturer: Woodward
  • Series: ProTech 203 Overspeed Protection

9905-994

    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
Woodward De-energize-to-Trip ProTech 203 Overspeed Trip Device 9905-994 that senses prime mover speed through three MPUs. Features Audible and Visible Alarm Systems.

AVAILABILITY:

CALL FOR AVAILABILITY

3 Year Warranty: Learn More
Sell Surplus: Have a 9905-994 to sell? Sell Now
Exchange Credit: Learn more about our exchange credit program
  • Part Number: 9905-994
  • SKU: 9905994WO
  • Manufacturer: Woodward
  • Series: ProTech 203 Overspeed Protection

9905-994 Technical Specifications

Dimensions W482.6 x H310.4 x D142.7 (with knobs and key)
Display Operating Temperature –15 to +60 °C (+5 to +140 °F)
Features Key Lock
Input Voltage (2) 120 Vac/dc, (1) 220 Vac
Manual Woodward 85196
Model De-energize-to-Trip
Operating Temperature –25 to +60 °C (–13 to +140 °F)
Standards Adequate ventilation for cooling
Weight Approx 16 lbs

Product Description

In the Woodward line of ProTech 203 Overspeed Protection Systems, model 9905-994 offers several features that make it a sound choice for your overspeed protection applications. This de-energize-to-trip device is designed to allow hot replacement of individual speed-sensing units, of which there are three. These units can also be individually tested without taking the prime mover offline, and a trip of only one unit will not stop the operation of the system overall.

 

Each unit must be reset before the turbine is started, as well as after a trip. Model 9905-994 has a remote reset feature, so units may be reset from a location away from the device itself.

 

The three speed-sensing units in ProTech model 9905-994 are nearly identical. They are all designed to operate the same way, monitoring prime mover speed using magnetic pickups (MPUs), performing independent speed calculations, and performing a hardware two-out-of-three vote with the other two units. The only difference between the three units is the power supplies. There is a separate power supply for each unit, a 120 Vac/dc supply for each unit A and B, and a 220 Vac power supply for unit C.

 

Each unit also has an identical operator interface, located on the front panel of the IP65-certified enclosure. Key features of these interfaces include:

  • Two-line LCD
  • Keypad
  • LED functional status indicators
  • Alarm output
  • Potentiometer

 

Because the units are designed to operate independently prior to the hardware vote, they must be programmed separately. It is important that they be programmed with identical parameters though. Woodward manual 85196 has full details on programming model 9905-994 as well as additional product specifications.

Reviews For 9905-994
Internal Review

The 9905-994 and the entire ProTech 203 series are suitable for use in Class I, Division 2, Groups A, B, C, and D per UL for Canada and US or non-hazardous locations only. - AX Control Techs

Repair Services For 9905-994

Type Lead Time Price Action
Repair Service 1-2 weeks $4623

Our highly skilled technicians can repair your 9905-994. 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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9905-994 Manuals, White Papers, Data Sheets, and Troubleshooting