The NI cFP-DI-301 is a 16-channel sinking digital input module for National Instruments Compact FieldPoint systems. It acquires digital signals from industrial sensors and control devices with per-channel LED status indication and onboard diagnostics. The module operates at 18 to 30 VDC with current-limiting protection and accepts standard 24 VDC sourcing outputs. Hot-swappable design with automatic plug-and-play detection eliminates reconfiguration requirements.
Technical Specifications
Electrical Performance
• 16 sinking input channels
• Input voltage range: 18 to 30 VDC (ON: 15–30 VDC; OFF: <5 VDC)
• All-channel update rate: 1 kHz
• Power consumption: 325 mW
• Reverse voltage protection: –30 VDC
• Overvoltage protection included
Isolation & Safety
• Bank isolation: 2,300 Vrms breakdown
• Channel-to-ground isolation: 250 Vrms CAT II continuous (verified by 2,300 Vrms, 5 s dielectric withstand)
• Double insulation per IEC 61010-1 (250 Vrms working voltage)
• Module-to-module isolation built-in
• Common ground plane across all channels
Physical & Environmental
• Dimensions: 0.94 × 5 × 2.6 in. (2.4 × 12.7 × 6.6 cm)
• Weight: 3.6 oz (100 g)
• Operating temperature: –40 to 70 °C
• Storage temperature: –55 to 85 °C
• Operating vibration: 5 grms (random), 5 g (sinusoidal) 10–500 Hz
• Relative humidity: 10 to 90% non-condensing
– Key Features
• Hot-swappable with automatic HotPnP detection and identification
• Per-channel LED indicators display input state
• Current-limiting circuitry permits direct connection to 24 VDC sources
• Onboard diagnostics for installation and maintenance
• Mounts on Compact FieldPoint backplane (cFP-BP-x or cFP-180x) via cFP-CB-x connector block
– Typical Applications
Industrial automation, process control, data acquisition, and sensor monitoring in controlled and field environments requiring galvanic isolation.
– Compatibility & Integration
Designed exclusively for National Instruments Compact FieldPoint systems. Data throughput depends on software loop speeds and network speeds.
