Woodward Electronic Control Systems

Electronic Controls for Steam Turbines

Peak 150® Steam Turbine Control

Woodward’s Peak®150 steam turbine control is a low-cost, compact, digital control for single-valve or single-valve rack steam turbines. It provides convenient operator control and speed display from the front panel. It is housed in a watertight and dust tight enclosure. A corrosion-resistant enclosure designed to meet NEMA 4X requirements is also available.

The Peak 150 digital control is designed to control a steam turbine driving a mechanical load. It provides tight control of speed (NEMA D) and includes an input for a 4-20 mA remote speed control signal, which can be used for a process-generated input to control the speed setting.

Other features include dual speed control dynamics and overspeed trip test capabilities.

Learn more from the Peak 150 product specification

Inputs

Magnetic Pickup Inputs (2):

Two identical inputs, high-signal-selected
Minimum input voltage 1 Vrms, minimum frequency 200 Hz, maximum frequency 15 kHz

Analog Input (1):

Remote Speed Setting signal (4–20 mA or 1–5 Vdc, internal jumper selectable)

Discrete Inputs (8)

Remote (isolated, 5–28 Vdc)

Options:

Raise speed
Lower speed
Emergency stop
Alarm reset
Remote speed set enable
Start
Idle/minimum governor
Select high dynamics or overspeed test

Outputs

Analog Outputs (2):

Actual speed output (scalable, 4–20/0–1 mA)
Configurable readout (scalable, 4–20/0–1 mA)

Options:

Actual speed
Speed setpoint
Actuator output
Remote speed setpoint
Valve ramp value

Actuator Output (1)

4–20 or 0–200 mA (internal jumper selectable)

Relay Outputs (4)

Internal jumpers provide choice of normally-open or normally-closed contacts

Operator Control Panel

Keypad Switches (6) Options

Raise speed
Lower speed
Emergency trip
Start
Overspeed test
Alarm reset

LED Indicators (6)

Remote speed setting signal status
Shutdown status
MPU #1 status
MPU #2 status
CPU status
Overspeed test status

Power Input

Models are available with these input power requirements:
24 Vdc
90–150 Vdc or 88–132 Vac, 47–63 Hz

Maximum power consumption, all models: 38 W

Operating Ambient Temperature

–25 to +65 °C (–13 to +149 °F)

Storage Ambient Temperature

–40 to +85 °C (–40 to +185 °F)

Humidity

Designed to meet US MIL-STD-810D, Method 507.2, Procedure II, induced, non-hazardous, cycle 5 (fifteen 24-hour cycles, varying 19–75% humidity, over 33–63 °C)

Vibration