Woodward 8200-205 (ProTech 203) overspeed protection controller
8200-205 is a Woodward ProTech 203 series two out of three (2oo3) digital overspeed protection system, designed to provide independent, high safety level overspeed and signal fault protection for steam turbines/gas turbines/rotating equipment. It is a SIL2/SIL3 certified safety equipment.

1、 Product Information
Model: 8200-205
Series: ProTech 203 (for overspeed protection)
Manufacturer: Woodward
Core functions: Triple speed monitoring, 2oo3 overspeed trip, sensor/CPU fault diagnosis, power outage trip (De energize to Trip)
Security level: SIL2/SIL3 (compliant with IEC 61508)
Protection logic: 3-channel magnetic speed probe (MPU) input, any 2-channel overspeed will trigger a trip
2、 Technical parameters and specifications
1) Electrical and Performance
Power supply: 220 VAC ± 10%, 50/60 Hz (power-off trip type)
Speed input: 3-channel magnetic pickup (MPU), adjustable from 250 to 25000 rpm Woodward
Trip setting: 250-25000 rpm (software programmable) Woodward
Fault detection: MPU disconnection/short circuit, CPU/MPU fault, power supply abnormality
Output contact: Relay tripping output (normally closed, power-off action)
Display and operation: LED digital display+buttons, * * key lock (program/monitoring mode) * * anti misoperation
2) Environment and Physics
Working temperature:+5 ℃~+60 ℃ (+41 ℉~+140 ℉)
Protection level: IP54 (NEMA 4/4X), dustproof and splash proof
Dimensions (width x height x depth): 483 mm x 311 mm x 143 mm (19 «x 12.24» x 5.62 «)
Weight: Approximately 6.8 kg (15 lbs)
3、 Usage scenarios
Power industry: thermal power/thermal turbine overspeed protection, generator shaft safety monitoring
Petrochemical industry: overspeed protection for gas turbines, steam turbines, and compressor units
Industrial Drive: High Safety Speed Monitoring for Large Expansion Machines, Blowers, and Pump Sets
High safety requirements: A hard wired overspeed protection circuit independent of DCS/PLC is required
4、 Related models (ProTech 203 series)
8200-204:110 VAC power supply, power-off trip type
8200-206:24 VDC power supply, power-off trip type
8200‑207：220 VAC， Energize to Trip
8200-209: Extended Communication (Modbus)+Remote Diagnosis
ProTech 201: Basic model (2oo2), economical overspeed protection
5、 Core advantages
Triple redundancy safety: 3-channel independent speed measurement+2oo3 voting, single point failure does not fail
Independent hard protection: does not rely on DCS/PLC, hard wired trip circuit, fast response (<100 ms)
High reliability industrial design: IP54 protection, wide temperature range, anti vibration, suitable for harsh working conditions
Anti misoperation: key lock+password protection, parameter modification requires authorization
Complete diagnosis: Real time display of sensor/CPU/power status, with traceable faults