Designing Current Shunt Measurements That Stay Accurate
A practical guide to current-shunt measurement covering resistor sizing, high-side and low-side placement, Kelvin sensing, error budgets, thermal effects, protection and commissioning tests.
Manufacturer: Woodward
Product No.: 9905-867
Country of origin:United States
Product Type: Steam Turbine Digital Controls
Payment: T/T, Western Union
Weight: 8500g
Dimensions: 105 mm x 310 mm x 483 mm (D x H x W)
Shipping port: Xiamen
Warranty: 12 months
The Woodward 9905-867 is a steam turbine digital control designed for single-valve or single-valve rack steam turbines. Equipped with a 16-bit, 12MHz microprocessor, this microprocessor-based system provides speed control, dual dynamics, and integrated monitoring functions. The unit accepts redundant magnetic pickup speed inputs and features an analog input dedicated to remote speed setting or process control integration. Enclosed in a NEMA 4X rated housing, the 9905-867 provides field configuration capability for mechanical drive applications including pumps, fans, blowers, and compressors.
| Parameter | Specification |
|---|---|
| Manufacturer | Woodward |
| Series | Peak 150 |
| Part Number |
9905-867
|
| Processor | 16-bit, 12MHz microprocessor |
| Input Voltage | 90-150VDC or 88-132VAC |
| Input Frequency | 47-63Hz (AC operation) |
| Power Consumption | 38W maximum |
| Enclosure Rating | NEMA 4X |
| Communications Protocol | Modbus |
| Communication Hardware | RS-232 / RS-422 / RS-485 |
| Speed Sensor Inputs | 2 Magnetic Pickups (1Vrms min, 200Hz to 15kHz) |
| Analog Input | 1 Remote Speed Input (4-20mA or 1-5Vdc) |
| Discrete Inputs | 8 contact inputs (powered internally by 24Vdc or externally by 5-28Vdc) |
| Actuator Output | Programmed 0-200mA (60 ohm max load) or 0-20mA / 4-20mA (450 ohm max load) |
| Analog Outputs | 2 outputs (Speed Readout, Configurable Output), 4-20mA or 0-1mA (600 ohm max load) |
| Relay Contacts | 4 Hermetically-Sealed Relays (2A @ 28Vdc res, 0.75A @ 28Vdc ind, 0.3A @ 115Vac res) |
| Operating Temperature | -25 to +60 degC |
| Storage Temperature | -40 to +85 degC |
| Dimensions | 483 mm x 305 mm x 102 mm (19 in x 12 in x 4 in) |
| Technical Manual | 85565 |
| Terminal / Pin | Function |
|---|---|
| 1 - 3 | Power Supply Input (Chassis Ground, +, -) |
| 4 - 5 | Relay Output #1 (Trip Relay) |
| 6 - 7 | Relay Output #2 (Alarm Relay) |
| 8 - 9 | Relay Output #3 (Configurable Relay #1) |
| 10 - 11 | Relay Output #4 (Configurable Relay #2) |
| 12 | Discrete Input Common |
| 13 | Discrete Input #1 (Lower Speed) |
| 14 | Discrete Input #2 (Raise Speed) |
| 15 | Discrete Input #3 (External Trip) |
| 16 | Discrete Input #4 (Start) |
| 17 | Discrete Input #5 (Reset) |
| 18 | Discrete Input #6 (Idle / Min Gov) |
| 19 | Discrete Input #7 (Remote Speed Enable) |
| 20 | Discrete Input #8 (Hi Dyn Select / Overspeed Test) |
| 21 - 32 | Modbus Communications Port (+5Vdc, Term Res, DTR, RXD, TXD, 422/485 Signals, Shield) |
| 33 - 35 | Analog Output #1 (Speed Readout: +, -, Shield) |
| 36 - 38 | Actuator Output (+, -, Shield) |
| 39 - 41 | Analog Output #2 (Configurable Readout: +, -, Shield) |
| 42 - 44 | Speed Sensor Input #1 (Magnetic Pickup #1: +, -, Shield) |
| 45 - 47 | Speed Sensor Input #2 (Magnetic Pickup #2: +, -, Shield) |
| 48 - 50 | Analog Input #1 (Remote Speed Input: +, -, Shield) |
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Returns & Warranty

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Returns & Warranty
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| Country of origin |
United States
|