9905-977

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Energize-to-Trip Model 9905-977 from Woodward ProTech 203 Overspeed Protection. 220Vac Input, Lockable Enclosure, and a Trip Alarm

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  • Part Number: 9905-977
  • SKU: 9905977WO
  • Manufacturer: Woodward
  • Series: ProTech 203 Overspeed Protection

9905-977 Technical Specifications

Dimensions W19in x H12.244in x D5.62in (with knobs and key)
Features Key Lock
Input Voltage 220 Vac = 180–264 Vac, 7.25W
Keypad/Display 1 Keypad, Knob, Display per Module
Manual 85195
Manufacturer Woodward
Model Energize-to-Trip
Operating Temperature –13 to +140 °F
Standards NEMA 4, IP54
Weight Less than 17 lbs Before Shipping

About the 9905-977

The ProTech 203 system can operate with several power sources. This model, model number 9905-977, is the 220 Vac version (180–264 Vac, 7.25 W voltage range). Each of the three speed-sensing units in this energize-to-trip Woodward ProTech 203 model has a separate power supply.

There are several factors that should be considered when choosing a location to install models 9905-977. This device should be installed somewhere it is protected from electromagnetic interference, such as from high-voltage or high-current devices, as well as vibration. The operating temperature range should be –25 to +60 °C (–13 to +140 °F), with a range of –15 to +60 °C (+5 to +140 °F) for the display. Woodward ProTech 203 Manual 85195 contains more information on the environmental requirements of this device.

Magnetic pickups (MPUs) are used to sample every 5 ms. The 9905-977 overspeed protection system has a 40 ms max response time for speed sampling, and speed calculation, and if an overspeed condition is detected, the activation of a trip relay.

If any errors occur with the MPU of any given unit, an error code will display on that unit’s operator interface and an LED will light. An alarm output is available for some errors. The MPU error codes are MPU > Trip Set Point, MPU Fail Timeout, MPU Failed, and No MPU Signal. Additional error codes and troubleshooting information are in manual 85195.

Reviews For 9905-977

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The ProTech 203 Model 9905-977 is 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.

Repair Services For 9905-977

Type Lead Time Price Action
Repair Service 1-2 weeks $5261

Our highly skilled technicians can repair your 9905-977. 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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9905-977 Manuals, White Papers, Data Sheets, and Troubleshooting