The NI FP-DI-301 is a 16-channel universal digital input module for industrial data acquisition within FieldPoint and Compact FieldPoint systems. It monitors digital sensors and switches across sinking input configurations, delivering 1 kHz per-channel update rates with individual on/off LED indicators plus power and ready status lights. The module provides 250 Vrms CAT II channel-to-ground isolation and 2,300 Vrms bank isolation, enabling safe operation in electrically demanding environments. Built-in current-limiting circuitry on each channel prevents damage from direct 24 VDC source connection.
Technical Specifications
Electrical
• 16 channels, sinking input configuration
• Input voltage: 24 VDC nominal
• ON range: 15 to 30 VDC; OFF range: <5 VDC; operating range: 18 to 30 VDC
• Reverse voltage protection: −30 VDC
• Input impedance: 5 kΩ per channel
• Power consumption: 400 mW
• Channel-to-ground isolation: 250 Vrms CAT II (2,300 Vrms dielectric withstand, 5 s)
• Bank isolation: 2,300 Vrms breakdown
Performance
• Update rate: 1 kHz all channels
• Data throughput: software and network dependent
Physical & Environmental
• Weight: 4.93 oz
• Operating temperature: −40 to 70 °C
• Storage temperature: −55 to 85 °C
• Humidity: 10 to 90% non-condensing RH
• Vibration: 5 grms random (10–500 Hz); 5 g sinusoidal (10–500 Hz)
• Pollution Degree 2 operation; Measurement Category II
Standards Compliance
• IEC 61010-1, EN-61010-1, UL 61010-1, CSA 61010-1
– Key Features
• Per-channel current-limiting protection
• Per-channel on/off LED indicators
• Power and Ready status LEDs
• Field device power distribution terminals (VSUP, COM)
• Mounts on FP-TB-x terminal bases or cFP-BP-x/cFP-180x backplanes
– Typical Applications
• Industrial sensor monitoring (discrete switches, proximity sensors, photoelectric detectors)
• Machine control signal acquisition
• Process automation and monitoring
• Building management and HVAC control
• Equipment status and alarm monitoring
– Compatibility & Integration
Integrates directly into National Instruments FieldPoint and Compact FieldPoint distributed I/O systems. Breakout terminal configuration enables field-device power delivery and signal isolation across multiple channels.
