Woodward 9907-262 UG Actuators

The ProTech 203 Overspeed Protection System is a digital overspeed trip device

that senses prime mover speed through three magnetic pickups (MPUs). It

consists of three identical, independent, speed-sensing units which continuously

monitor prime mover speed and activate a trip relay when an overspeed

condition is detected. The trip relays of the three units are connected in a two

out-of-three voting configuration so that if any single unit fails, the ProTech

system will still provide the correct output. The units' functions include the ability

to display the actual speed from each speed probe, display the highest speed

signal, on-line testing, and modular design that allows a single failed unit to be

replaced while the device is running. Light emitting diodes (LEDs) and digital

displays on the unit's front panel indicate the functional status.

Be careful when unpacking the ProTech® 203 system. Check the device for signs

of damage such as a bent or dented case and loose or broken parts. If damage

is found, notify the shipper immediately. The device may be stored in its original

shipping container until it is ready for installation. Protect the device from weather

and from extreme humidity or temperature fluctuations during storage.

Carefully study this chapter before choosing a location for the ProTech 203

system. Wiring and grounding considerations may influence the selection of a

location for the device.

Each of the three ProTech units must be reset before the turbine is started. A unit

is reset by pressing the front panel RESET button or by momentarily closing the

remote reset contact (TB5-4 to TB5-5). After the power-up self-tests, each

ProTech unit begins executing its speed-sensing algorithm. If the speed does not

exceed the MPU FAIL SETPOINT speed within the MPU FAIL TIMEOUT value,

the unit trips. At this time the MPU FAIL LED turns on and remains on until the

next reset. This trip is not affected by the TRIP ON MPU FAILURE option. The

ProTech overspeed protection system will trip on an overspeed condition during

start-up.

Woodward Discrete Input - 16 Channel 8200-1104

Woodward Discrete Output - 16 Channel 8200-1105

Woodward Termination Resistor Kit 8923-1889

Woodward Dataforth I/O Thermocouple - K-Type 1784-1028

Woodward Dataforth I/O RTD - 100 Ohm 1784-655

Woodward Dataforth I/O 4-20 mA Input 1784-659

Woodward Table A. NetCon Analog Cables 12 feet, Black 5416-349

Woodward Table A. NetCon Analog Cables 14 feet, Black 5416-350

Woodward Table A. NetCon Analog Cables 16 feet, Black 5416-351

Woodward Dataforth I/O 0-5 VDC Input 1784-657

Woodward Network Switches Ethernet - 8 Port, RJ45 Connectors 1711-1350

Woodward Table A. NetCon Analog Cables 6 feet, Black 5416-346

Woodward Table A. NetCon Analog Cables 8 feet, Black 5416-347

Woodward Table A. NetCon Analog Cables 10 feet, Black 5416-348