Product details
Woodward 9905-971 Discrete Input Module | 24-Channel Reliable Control Solution
The Woodward 9905-971 Discrete Input Module is a high-performance 24-channel input unit designed for precision monitoring in industrial control systems. Built with advanced latent fault detection, this module ensures operational safety and reliability in complex automation setups.
Key Technical Specifications
- Part Number: 9905-971
- Manufacturer: Woodward
- Product Type: Discrete Input Module
- Number of Channels: 24
- Input Voltage: 24 Vdc Nominal
- Update Time: 5 ms
- Time Stamping: 1 ms Resolution
- Fault Detection: Latent Fault Detection System
- Operating Mode: Normally Open / Normally Closed
- Isolation: Fully Isolated Inputs
- Power Supply: 18–32 Vdc
- Country of Origin: United States (USA)
- Warranty: 12 Months
- Shipping: FedEx, UPS, DHL
Product Benefits
- Fast 5 ms update time ensures real-time responsiveness.
- High fault tolerance with built-in self-diagnostic checks.
- Rugged build for long service life in industrial environments.
- Easy module replacement and quick wiring setup.
- Ideal for applications requiring high input reliability and fault safety.
Installation Notes
- Insert the module into the chassis card guides and secure with two screws.
- Ensure power is supplied between 18–32 Vdc for optimal function.
- Use external 24 Vdc or 100–150 Vdc sources for contact wetting.
- Connect commons correctly when using external power sources.
- Perform periodic checks on relay contacts for best performance.
Frequently Asked Questions (FAQ)
- Q: What does latent fault detection mean in the 9905-971?
A: It detects hidden relay issues before they cause system shutdowns or failures. - Q: How fast does the 9905-971 module update input data?
A: The module updates every 5 milliseconds, ensuring fast response times. - Q: Can I use external power for contact wetting?
A: Yes, the module supports external 18–32 Vdc or 100–150 Vdc sources. - Q: Is the input signal isolated?
A: Yes, all discrete inputs are fully optically isolated to prevent noise interference. - Q: How do I know if a relay has failed?
A: The built-in readback circuit identifies relay faults and reports them automatically.
Contact & Support
- Email: sales@powergearx.com
- WhatsApp: +86 18030005825
- Website: Powergear X
- Partner: Ubest Automation Limited
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Original Source: https://www.powergearx.com/
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