9905-996

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The Woodward ProTech 203 electronic two-out-of-three Overspeed Protection Systems. Features a 120 Voltage Input, CPU and MPU Failure Indication, and a Lockable Enclosure

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  • Part Number: 9905-996
  • SKU: 9905996WO
  • Manufacturer: Woodward
  • Series: ProTech 203 Overspeed Protection

9905-996 Technical Specifications

Dimensions W19in x H12.244in x D5.62in
DIsplay Operating Temperature +5 to +140 °F
Features CPU and MPU Failure Indication
Input Voltage 120 Vac/dc = 88–132 Vac/90–150Vdc, 7.25W
Manufacturer Woodward (Manual 85196)
Model Energize-to-Trip
Operating Temperature –13 to +140 °F
Speed-Sensing Frequency Range 100 Hz to 32 kHz
Standards NEMA 4 and IP54

About the 9905-996

Part 9905-996 overspeed protection device has an energize-to-trip voter relay configuration. During normal operation, the voter relays are in a de-energized state. The locked enclosure of this model is IP 65 certified.

Inside the locked enclosure is a key switch, which is used to access PROGRAM mode for the three speed-sensing units. This prevents unauthorized access to the programming and testing functions of model 9905-996. When the units are in PROGRAM mode, tunable parameters can be set.

ProTech model 9905-996 can be set for a Trip Speed Set Point of 250 rpm to 25,000 rpm and a Magnetic Pickup (MPU) Failed Set Point of 100 rpm to 25,000 rpm. This overspeed protection model has a trip-point frequency range of 250 Hz to 25 kHz. Full product specifications are in Woodward ProTech manual 85196.

If an overspeed condition is detected by one speed-sensing unit, that unit will trip. If an overspeed condition is detected by at least two of the speed-sensing units, a two-out-of-three hardware vote triggers a trip relay to take the prime mover offline. When a trip relay is activated, a code is displayed on the operator interface LCD of the tripped unit(s), an LED indicator is illuminated, and an alarm output is triggered.

Reviews For 9905-996

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(4.0)

Check for correct wiring according to the plant wiring diagram. Check for broken terminals or loose terminal screws. Ensure that all ribbon cables are fully seated and clamped in place. - AX Control Inc. Tech

Repair Services For 9905-996

Type Lead Time Price Action
Repair Service 1-2 weeks $4568

Our highly skilled technicians can repair your 9905-996. 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
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All Motors: 1 Year
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9905-996 Manuals, White Papers, Data Sheets, and Troubleshooting