9905-876

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The ProTech 203 System Digital Overspeed Trip Device 9905-876 reads three individual MPUs and performs three individual speed calculations.

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  • Part Number: 9905-876
  • SKU: 9905876WO
  • Manufacturer: Woodward
  • Series: ProTech 203 Overspeed Protection

9905-876

    Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures Varying star amount pictures
  • 4.00 (1)
  • 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 (1)
  • Click a star to rate this product
The ProTech 203 System Digital Overspeed Trip Device 9905-876 reads three individual MPUs and performs three individual speed calculations.

AVAILABILITY:

CALL FOR AVAILABILITY

3 Year Warranty: Learn More
Sell Surplus: Have a 9905-876 to sell? Sell Now
Exchange Credit: Learn more about our exchange credit program
  • Part Number: 9905-876
  • SKU: 9905876WO
  • Manufacturer: Woodward
  • Series: ProTech 203 Overspeed Protection

9905-876 Technical Specifications

Dimensions W19 x H12.244 x D5.62in
Display Operating Temperature +5 to +140 °F
Features Remote Reset
Input Voltage 120 Vac/dc = 88–132 Vac/90–150Vdc, 7.25W
Keypad/Display 3 LCDS | 2 Lines of 16 Characters
Manual 85191
Manufacturer Woodward Governor
Model Energize-to-Trip
Operating Temperature –13 to +140 °F
Standards NEMA 4 for NA, IP54 for EU
Weight 13lbs 1oz

Product Description

The ProTech 203 Overspeed Protection System series by Woodward has many available versions. Model 9905-876 is an energize-to-trip version, with a 120 Vac/dc power supply (voltage range of 88–132 Vac/90–150 Vdc, 7.25 W) for each of the three speed-sensing in the system.

 

Model 9905-876 works by performing three separate speed calculations based on the readings of three separate magnetic pickups (MPUs), which continually monitor prime mover speed. A trip relay is activated when a two-out-of-three hardware vote detects an overspeed condition. An individual speed-sensing unit may trip from an overspeed condition, loss of MPU signal, or other conditions outside of normal operating parameters. Details are in ProTech 203 Manual 85191 (version B).

 

The design of model 9905-876 avoids unnecessary system downtime by allowing the prime mover to remain online with two of the three units maintaining accurate output, so if a single unit trips, is being tested, or needs to be replaced, the overall system will remain operational.

 

Additional features of model 9905-876 include:

  • Remote reset
  • LED functional status indicator for MPU failure, tripped unit, CPU errors, etc.
  • Alarm output
  • Key locked enclosure (NEMA 4, IP 65 standards)

 

 The LED indicators, a separate set for each speed-sensing unit, are located on the front of that unit’s operator interface. There is also an LCD and touchpad on each interface.

Reviews For 9905-876
Internal Review

Each 9905-876 (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

Repair Services For 9905-876

Type Lead Time Price Action
Repair Service 1-2 weeks $4549

Our highly skilled technicians can repair your 9905-876. 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

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9905-876 Manuals, White Papers, Data Sheets, and Troubleshooting