9905-971

Overview

• Model: 9905-971
• Type: Discrete Input Module
• Manufacturer: Woodward

Technical Details

• Channels: 24
• Update Time: 5 ms
• Time Stamping: 1 ms resolution
• Input Voltage: 24 Vdc
• Power Source: 18–32 Vdc or 100–150 Vdc

Functions

• Relay Outputs: Configurable as normally open or closed.
• Fault Detection: Identifies latent faults for reliability.
• Contact Voltage: Internal 24 Vdc or external power sources.
• Isolation: Fully isolated inputs requiring a common reference point.

Performance

• Relay Configuration: Six relays per output in series-parallel.
• Fault Tolerance: Operates with up to two relay failures.
• Testing Mechanism: Regular state checks ensure relay functionality.

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