Maker: Woodward
Series: Peak 150
Part Number: 9905-864
Power Supply type: AC/DC
Housing grade: NEMA 4X
Analog input: 4-20mA or 1-5VDC remote speed control signal
Actual speed output: scalable, 4-20/0-1mA
Configurable readout output: scalable, 4-20/0-1mA
General information
The 9905-864 is a Woodward Peak 150 low cost digital controller for single valve and single valve rack steam turbines. This model is the AC/DC, NEMA 4X class model in this series. This means that in addition to being water and dust resistant, the model is also designed to operate in corrosive environments, unlike many other digital controls. Like the other devices in the series, this unit is set up using a separate handheld programmer unit to reduce unnecessary changes to the system.
Unit characteristics
The unit has a range of standard features, such as a front keyboard with 6 switches and LED indicators, allowing the operator to quickly read and interact with the system. The 9905-864 uses the NEMA D motor type, which facilitates tighter control of turbine speeds.
The device has dual speed control dynamic and overspeed trip test. The CPU of the unit is a 16-bit, 12MHz microprocessor, and the status of the processor can be checked by the indicator on the front panel. Other indicators show the status of the 2 magnetic pickups, overspeed testing, remote speed setting signals, and shutdown.
Additional specification
The 9905-864 has a rated AC/DC input of 90-150VDC or 88-132VAC (47-63Hz). The 9905-864 measures 19 inches (483 mm) wide x 12.2 inches (310 mm) high x 4.1 inches (105 mm) deep. The technical manual number for this model and series is 85565.
