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The Woodward 9907-166, also cataloged as the 9907-166 505E Digital Turbine Controller, operates as a dedicated hardware component for controlled extraction and/or admission pressure control within steam turbine applications.
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The Woodward 9907-166, also cataloged as the 9907-166 505E Digital Turbine Controller, operates as a dedicated hardware component for controlled extraction and/or admission pressure control within steam turbine applications.
| Parameter | Specification |
|---|---|
| Model | 9907-166 |
| Brand | Woodward |
| Origin | USA |
| Weight | 4.13 kg |
| Dimensions | 14 in x 11 in x 4 in |
| Operating Temp | -25 deg C to +65 deg C (up to +55 deg C with NEMA 4X enclosure) |
| Power Consumption | 90-150 VDC or 88-132 VAC (47-63 Hz) |
| Microprocessor | 32-bit Microprocessor |
| Communication Ports | 2 Modbus Ports (ASCII or RTU) |
| Input Interfaces | 2 MPUs, 16 Contact Inputs, 6 Programmable Current Inputs |
| Output Interfaces | 2 Actuator Outputs, 8 Relay Outputs, 6 Programmable Current Outputs |
| User Interface | 30-key Keypad with 2-line, 24-character LED Display |
| Environmental Compliance | Complies with Lloyd's ENV2 Test #1 (Humidity and Vibration) |
Driven by an onboard 32-bit microprocessor, the 9907-166 samples real-time turbine dynamics across 2 magnetic pickup unit (MPU) inputs, 16 contact inputs, and 6 programmable current inputs to execute extraction/admission pressure regulation. The processing stage formats noise-free demand signals across 2 dedicated actuator outputs and 6 programmable current outputs to maintain rapid actuator loop feedback response. Internal power supply components balance passive thermal heat sink dissipation profiles across dual AC/DC operating limits (90-150 VDC / 88-132 VAC) while two Modbus ports handle real-time supervisory data transfer.
Q: What primary AC and DC power supply voltage ranges are supported by the 9907-166?
A: The controller accepts power input levels from 90 to 150 VDC or 88 to 132 VAC across 47 to 63 Hz frequencies.
Q: What I/O point density is available on the physical connection terminals?
A: The hardware provides 2 MPU speed inputs, 16 contact inputs, 6 programmable current inputs, 2 actuator driver outputs, 8 relay outputs, and 6 programmable current outputs.
Q: How does the presence of the optional NEMA 4X protective enclosure affect the operational thermal limits?
A: The standard unit operates between -25 deg C and +65 deg C, but installing the NEMA 4X enclosure Derates the maximum ambient operating limit to +55 deg C.
