ProTech 203 9907-147 Woodward Overspeed Protection System

Description

The 9907-147 is a ProTech 203 De-Energize-to-Trip Overspeed Protection System by Woodward. It monitors prime mover speed using magnetic pickups and ensures safe shutdown in overspeed conditions using a two-out-of-three voting architecture.

General Information

• Manufacturer: Woodward

• Model: 9907-147

• System Type: De-Energize-to-Trip

• Function: Overspeed protection for prime movers

• Input Voltage: 24 VDC

Features

• Trip Architecture: Independent triple-channel speed sensing with two-out-of-three voting logic

• Speed Frequency Range: 100 Hz to 32 kHz

• Trip-Point Frequency: 250 Hz to 25 kHz

• Accuracy: ±(0.05% of trip point in Hz + 2 Hz)

• Failure Indications: CPU and MPU failure detection

• Interface: 3 LCD displays (2 lines x 16 characters), keypad, potentiometer, LED indicators

• Alarm Output: Provided

• Lockable Enclosure: Yes

Environmental Conditions

• Operating Temperature: –25 to +60 °C

• Display Operating Temperature: –15 to +60 °C

• Installation Considerations: Avoid direct sunlight, moisture, EMI, and install in ventilated serviceable areas

Dimensions

• Width: 482.6 mm

• Height: 310.4 mm

• Depth: 142.7 mm