cFP‑DI‑304 (National Instruments)

32‑Channel 24 VDC Sinking Digital Input Module (Compact FieldPoint, EOL)

General Description

Part Number

• Model: cFP‑DI‑304

• NI PN: 777318‑304

Key Specifications

• Channels: 32 digital inputs (sinking type)

• Input Voltage Range: 10–30 VDC (nominal 24 VDC)

• Input Impedance: 30 kΩ

• Isolation: 250 Vrms (channel‑to‑backplane); channels non‑isolated from each other

• All‑Channel Update Rate: 1 kHz

• Power Consumption: 1 W (supplied via cFP network module)

• Connectors: 68‑pin VHDCI (to cFP‑CB‑1 / CB‑3 terminal base)

• Indicators: 32 × channel LED, POWER, READY (all green)

• Operating Temperature:

  • Upright mounting: ‑40 °C to +70 °C

  • Other orientations: ‑40 °C to +65 °C

• Storage Temperature: ‑55 °C to +85 °C

• Humidity: 10–90% RH, non‑condensing

• Vibration: 5 grms (random), 5 g (sine), 10–500 Hz

• Certifications: CE, UL, CSA

• Weight: ~193 g (6.81 oz)

Main Features

• 32‑Channel Sinking Input: Compatible with NPN sensors, dry contacts, 24 VDC logic.

• Built‑In Isolation: 250 Vrms channel‑to‑backplane isolation protects system from high‑voltage transients.

• HotPnP (Plug‑and‑Play): Auto‑detected by NI configuration software; hot‑swappable.

• Current Limiting: Protects inputs from overload and short‑circuit damage.

• LED Status Indicators: Per‑channel and module status for easy troubleshooting.

• Industrial Ruggedness: Wide temperature, vibration tolerance, and safety certifications.

Applications

• Industrial automation: limit switches, proximity sensors, pushbuttons, relay contacts.

• Factory floor I/O: machine status, safety interlocks, conveyor control.

• Process monitoring: pump/valve position, flow switch, level sensor inputs.

• Legacy Compact FieldPoint system maintenance and expansion.

Compatibility

• Terminal Bases: cFP‑CB‑1 (36‑pin) or cFP‑CB‑3 (18‑pin, isothermal).

• Backplanes: cFP‑BP‑x series.

• Controllers: All Compact FieldPoint network modules (e.g., cFP‑2000, cFP‑2010).