Products

Woodward’s newSIL-3 certified ProTech safety and machinery protection platform leverages decades of pedigree and is designed to meet API specifications.

The platform ranges from the simplex version to a full TMR based control that also monitors up to 10 different machinery sensors/devices (ProTech TPS) to provide a full blanket of protection for your equipment.

In addition to the Protech range, Woodward’s QuickTrip fault tolerant trip block design makes it ideal for critical steam turbine applications, where turbine up-time and availability are essential. This trip block assembly’s 2-out-of-3 voting design provides users with a very high level of system reliability as well as compliance with industry standard API-670.



Protech GII

Woodward’s ProTech®-GII is an overspeed safety device designed to safely shut down steam, gas, and hydro turbines upon sensing an overspeed or over acceleration event. This device accurately monitors turbine rotor speed and acceleration via active or passive MPUs (magnetic pickups) and issues a shutdown command to the turbine’s trip valve(s) or corresponding trip system.

The ProTech-GII is IEC61508 SIL-3 Certified and API670 & API612 Compliant.

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Acceleration Detection
Optionally the ProTech-GII can be configured to protect a turbine from high acceleration events also. The derivative of the speed signal is used to detect turbine acceleration and issue an associated trip command.

MPU Detection
Each module’s speed sensor input uses special MPU open-wire detection circuitry to validate that the MPU is properly connected before turbine operation, and special loss-of-speed detection logic to validate MPU functionality during turbine operation.

Automatic Overspeed Test Routine
Optionally the ProTech-GII can be configured to routinely perform an overspeed test of each module, then log and report the test results. With this test routine, each module goes through its test sequence using an internal frequency generator to simulate an overspeed condition.

Sulfur Contamination Resistant
The ProTech-GII utilizes a special conformal coating material that has demonstrated excellent long-term protection against H2S and SO2 gases at levels classified in international standard IEC 721-3-3 1994 - environment Class 3C2.

On-line Repair
The ProTech-GII’s triple-modular design allows users to easily replace one of its modules (A, B, C) while the turbine is on-line and operating normally. Ease of replacement is enhanced by the unit’s backplane plug-and-operate structure, and its module-to-module learning function.

On-line Testing
Each ProTech-GII module can be tested manually from the module’s front panel, Modbus communications port, or automatically via its auto-test routine function. The ProTech-GII allows users to configure an overspeed test to be performed automatically on a periodic basis, testing each module (A, B, C) one at a time, and logging the result of each test or halting the test for a sensed error.

Trip, Alarm, & Overspeed Logs
The ProTech-GII log function logs (saves to memory) all trips, alarms, trip valve response times, and overspeed events. The trip-log function uses a scrolling buffer and records the last 50 sensed trip or alarm events and the last 20 overspeed events to memory, with associated times. Each log file can be viewed from the unit’s front panel, or downloaded to a computer via the ProTech-GII service tool program. Each module utilizes non-volatile memory to ensure that all logged events are saved, even on loss of power.

Real Time Clock
Each ProTech-GII module utilizes a real-time clock to ensure accurate time logging. A special timeaveraging function is utilized between modules to to ensure module-to-module clock synchronization.

Protech SX

Woodward’s ProTech-SX SIL 2 PLC safety system applies to steam, gas, or hydro turbines, plus plant process equipment. This stand-alone safety system accepts two speed inputs and seven discrete/analog inputs, uses programmed logic to determine when a safety event has occurred, then issues system shutdown commands and alarms. The ProTech-SX uses five fast-acting, configurable relay outputs and a speed meter output to interface with/command the specific system or device being protected.

The ProTech-SX is IEC61508 SIL-2 Certified and API670 & API612 Compliant.

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Programming
The ProTech-SX functions as a safety PLC, as it accepts seven discrete or analog inputs, and allows users to create custom safety/protection programs to protect site personnel and equipment. Programmers are able to utilize typical logic and testing sequence routines to create their application-specific safety logic and tests.

On-Line Testing The ProTech-SX can be tested manually from the module’s front panel, Modbus communications port, or automatically via its auto-test routine function. The ProTech-SX allows users to configure overspeed or custom programmed tests to be performed manually or automatically.

Trip, Alarm, & Overspeed Logs
The ProTech-SX log function logs (saves to memory) all trips, alarms, trip valve response times, and overspeed events. The trip log function uses a scrolling buffer and records the last 50 sensed trip or alarm events and the last 20 overspeed events to memory, with associated times. Each log file can be viewed from the unit’s front panel, or downloaded to a computer via the ProTech-SX service tool program. Each module utilizes nonvolatile memory to ensure all logged events are saved, even on loss of power.

Trip Valve Health Monitoring
The ProTech-SX can be configured to test, log, and alarm on the response time of a turbine trip valve. Using the trooper’s built-in valve response monitoring function, users can connect a valve position sensor (limit switch, pressure switch) to a ProTech-SX input and configure the ProTech-SX to monitor, log, and alarm the time period between when a trip command was sent and when a valve closed indication was received.

Real Time Clock
Each ProTech-SX utilizes a real-time clock to ensure accurate time logging. Alternatively, one of the ProTech-SX inputs can be configured to accept a discrete clock synchronization input signal from a plant DCS or other time synch device.

Protech TPS

Woodward’s ProTech®TPS PLC safety system is a SIL-3 system for any size steam-, gas-, or hydro- turbine, as well as compressors, engines and plant process equipment.

This safety PLC's fast (12 millisecond) response time, 0.5 to 32 000 rpm speed range, and integrated overspeed and acceleration detection/protection functionality make it ideal for application on critical high-speed rotating motors, compressor, turbines or engines.

The ProTechTPS is IEC61508 SIL-3 Certified and API670 & API612 Compliant.

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High Resolution Displays
Each module includes a high resolution 4.2” (107 mm) color display and keypad to allow users to locally monitor configuration settings, statuses, system inputs and outputs, and alarm, trip, and overspeed logs.

Automatic Overspeed Test Routine
Optionally, the ProTechTPS can be configured to routinely perform and overspeed test each module/trip solenoid, then log and report the test results. With this test routine, each module is sequenced through its test sequence using an internal frequency generator to emulate an overspeed condition.

Automatic Test Routines
Optionally, the ProTechTPS can be configured to routinely perform custom tests of each module/trip solenoid, then log and report the test results. With this test routine, each module is sequenced through a programmed test sequence to simulate, test, and log the results of each safety even condition

Acceleration/Deceleration Detection
Optionally, the ProTechTPS can be configured to protect a turbine from high acceleration/decelertaion events. The derivative of the speed signal is used to detect turbine acceleration/deceleration and issue an associated trip command.

MPU Detection
Each module’s speed sensor input uses special MPU open-wire detection circuitry to validate that the MPU is properly connected before turbine operation, and special loss-of-speed detection logic to validate MPU functionality during turbine operation.

Sulfur Contamination Resistant
Utilizes special conformal coating material that has demonstrated excellent long-term protection against H2S and SO2 gases at levels classified in international standard IEC 721-3-3 1994 - environment Class 3C2.

Programming The ProTechTPS functions as a safety PLC, as it accepts 10 discrete or analog inputs per module (30 total), and allows users to create custom safety/protection programs to safely protect site personnel and equipment. Programmers are able to utilize typical logic and testing sequence routines to create their application-specific safety logic and tests.

On-Line Testing Each ProTechTPS module can be tested manually from the module’s front panel, Modbus communications port, or automatically via its auto-test routine function. The ProTechTPS allows users to configure overspeed or custom-programmed tests to be performed manually or automatically on a periodic basis. With these test routines, each module (A, B, C) is tested one at a time, and either a successful test result is logged or, upon sensing a fault, the routine is halted and the sensed fault indicated/alarmed.

On-Line Repair The ProTechTPS’s triple modular design allows users to easily replace one of its modules (A, B, C) while the monitored equipment/turbine is on-line and operating normally. Ease of replacement is enhanced by the unit’s backplane plug-and-operate structure, and its module-to-module learning function.

Trip, Alarm, & Overspeed Logs The ProTechTPS log function logs (saves to memory) all trips, alarms, trip valve response times, and overspeed events. The trip log function uses a scrolling buffer and records the last 50 sensed trip or alarm events and the last 20 overspeed events to memory, with associated times. Each log file can be viewed from the unit’s front panel, or downloaded to a computer via the ProTechTPS service tool program. Each module utilizes nonvolatile memory to ensure that all logged events are saved, even on loss of power.

Real Time Clock Each ProTechTPS module utilizes a real-time-clock to ensure accurate time logging. A special time averaging function is utilized between modules to ensure module-to-module clock synchronization. Alternatively one of the ProTechTPS’s inputs can be configured to accept a discrete clock synchronization input signal from a plant DCS or other time synch device.

QuickTrip

The QuickTrip trip block assembly is designed for use in steam, gas, and hydro turbine shutdown systems for quick and reliable dumping of the turbine’s trip oil header. This integrated trip block assembly is intended for use on mechanical-drive or generator-drive turbines that use lowpressure (5–25 bar / 73–363 psi) hydraulic trip oil headers.

The QuickTrip’s fault tolerant design makes it ideal for critical turbine applications, where turbine up-time and availability are essential. This trip block assembly’s 2-out-of-3 voting design provides users with a very high level of system reliability as well as compliance with industry standard API-670. This trip block assembly is housed in a fully integrated package which includes three patented, dirt-tolerant rotary trip valves.

These valves are connected to provide two-out-of-three based voting to ensure that a failure of any one component (valve driver, valve, wiring, connector, etc.) does not result in a nuisance trip condition. The QuickTrip’s modular design also allows users to replace critical components (electrical module, solenoid, wiring, driver, etc.) while the turbine is operating on-line.

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Robust Design
The QuickTrip’s robust design (corrosion resistant materials, three independent moving rotary valves, 25 lb chip shear force, and self-cleaning port design) makes it perfect for challenging applications where dirty or contaminated oil may be present. Specifically designed for steam turbine applications where turbine lube oil is also used to power the hydraulic turbine control valve actuator(s).

Steam turbine applications can be extremely challenging for hydraulic trip block assemblies as dirt, metal shavings, water, and other contaminants (babbitt, ammonia, etc.) are common in such oil systems. Also due to the high temperatures at which steam turbines operate, turbine oil breakdown is common, resulting in the creation of a sludge-type substance and the varnishing of internal system components.

Redundancy / Availability
Designed for use in critical steam turbine applications where turbine up-time is important, the QuickTrip uses three isolated solenoid valves designed to be driven by a triple modular redundant 2-out-of-3 voting based safety logic solver. Each isolated solenoid valve uses redundant power supply inputs to increase both system reliability and availability. Note: Only one power source is required to power/energize each of the isolated solenoid valves.

Valve Status (Local & Remote)
Each valve solenoid accepts power for one or two (redundant) power sources and has the following status indications to assist operators with understanding the status and health of each valve.

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