NI cFP-DO-401 16-Channel Sourcing Digital Output

The NI cFP-DO-401 is a 16-channel sourcing digital output module for National Instruments Compact FieldPoint systems. It provides industrial-grade switching control across 5 V to 30 VDC operating ranges with up to 2 A per channel output capacity. The module integrates optical bank isolation rated at 2,300 Vrms breakdown and 250 Vrms continuous channel-to-ground protection. Hot Plug & Play operation enables automatic detection and configuration by host software without system shutdown. Eighteen status LEDs indicate individual channel states and module power/ready conditions. Internal flyback diodes protect against inductive load transients; external fusing (1.5 A fast-acting) is recommended for applications requiring short-circuit protection. The module mounts directly onto a Compact FieldPoint backplane (cFP-BP-x), which supplies 730 mW operating power. Field wiring connections are isolated from the backplane and inter-module communication bus, ensuring robust separation of control logic from hazardous field voltages.

– Technical Specifications

• Output channels: 16
• Output voltage range: 5 V to 30 VDC
• Output current: Up to 2 A per channel
• Maximum module current: 8 A
• Output impedance: 0.3 Ω to 2 Ω
• Power consumption: 730 mW
• Isolation rating: 2,300 Vrms breakdown, 250 Vrms continuous channel-to-ground
• Transient withstand: 2,300 Vrms, 5 s dielectric

– Key Features

• Optical bank isolation protects system controllers from field-level transients
• 18 status LEDs for real-time channel and module diagnostics
• Internal diodes on all channels; external protection recommended for inductive loads
• Module-to-module isolation built into backplane architecture
• Hot Plug & Play configuration eliminates manual setup and network reconfiguration

– Typical Applications

• Relay and solenoid control in industrial automation
• Switched power distribution for motor starters and contactors
• Field device activation in remote monitoring systems
• Multi-channel switching in data acquisition platforms

– Compatibility & Integration

The cFP-DO-401 integrates with all Compact FieldPoint backplane models (cFP-BP-x). No channel-to-channel isolation exists; hazardous voltages on any channel require isolation of all channels from personnel contact. Part Number: 777318-401.