Channel & Physical Interface Configuration

• Channel Definition: 8-channel sourcing-only digital output (module sources current to external loads), no inter-channel galvanic isolation, all channels share unified COM ground bus
• Matching Accessories: Exclusive pairing with cFP-CB-1 screw terminal blocks and cFP-BP-4/cFP-BP-8 backplanes; incompatible with legacy FP-TB series terminal bases
• Status Indicators: 2 global green LEDs (POWER, READY) + 8 miniature single-channel green LEDs for independent on-state visual feedback
• Hot Swap Performance: HotPnP powered hot swapping, no backplane communication crash or signal interference to adjacent cFP modules during plug-and-play
• Mechanical Parameters: Single-width compact cFP form factor, bare module weight 102 g, flame-retardant PC housing, IP20 indoor dust protection

Core Electrical Output Parameters

• External Supply Voltage Range: 5–30 VDC full temperature rating with no voltage-based temperature derating
• Per-Channel Current Rating: 1 A continuous sourcing current, peak 1.5 A transient pulse current within 100 ms; distinct from 2 A sinking capacity of cFP-DO-403
• Total Module Current Limit: 8 A aggregated maximum output current across all 8 channels, no RSS squared-sum limit unlike DO-403
• Off-State Leakage: ≤10 μA ultra-low residual leakage, eliminating false trigger for high-impedance light loads
• Switching Performance: 20 kHz maximum toggle frequency, 35 μs hardware-level output response latency, faster than DO-403 50 μs latency

Overcurrent & Load Protection Design

• Onboard Channel Fuse: Each channel has independent resettable electronic fuse, automatic cut-off within 12 μs under short-circuit fault, no manual fuse replacement needed
• Flyback Protection: Built-in bidirectional TVS diode for inductive load voltage clamping, valid for inductive loads below 50 mH without external freewheeling diodes
• Reverse Polarity Protection: Tolerate -30 VDC reverse field power input, preventing wiring polarity reversal damage
• Overvoltage Protection: 32 VDC transient overvoltage withstand for 10s, hardware clamping to avoid surge breakdown

Isolation & Anti-Interference Design

• Isolation Structure: Single galvanic isolation between field output side and backplane communication/power bus; no inter-channel or inter-module isolation
• Dielectric Withstand Index: 2,300 Vrms 5-second transient impulse withstand, 250 Vrms continuous CAT II field-to-backplane isolation
• EMI Suppression: Onboard ferrite bead filtering on each output channel, suppressing high-frequency conducted interference from variable-frequency equipment
• Ground Isolation: Floating field-side ground to reduce ground loop crosstalk in multi-module mixed wiring systems

Hazardous Location & Safety Compliance

• Explosive Environment Certification: UL/ATEX/IECEx certified for Class I Div 2 Groups A/B/C/D T4, Zone 2 non-sparking hazardous locations
• Basic Safety Standards: IEC 61010-1, UL 61010-1, CSA C22.2 No.1010.1, Pollution Degree 2 indoor dry environment only
• Altitude Derating: Isolation voltage reduced by 30% when operating above 2000 m altitude
• Backplane Power Consumption: 420 mW static power consumption, lower heat generation than DO-403

Environmental & Shock-Vibration Reliability

• Operating Temperature: -40 ℃ ~ 70 ℃ full-range rating with no parameter derating
• Storage Temperature: -55 ℃ ~ 85 ℃, 10%–90% RH non-condensing humidity for transportation and storage
• Random Vibration: 5 grms 10–500 Hz compliant with IEC 60068-2-64
• Mechanical Shock: 50 g 3 ms half-sine operational shock, 30 g 11 ms transportation shock
• EMC Grade: CE/FCC/C-Tick Class A industrial electromagnetic emission, compliant with EN 61326 immunity standards

Compatibility Matching List

• Matching Backplanes: cFP-BP-4 (4-slot), cFP-BP-8 (8-slot) Compact FieldPoint backplanes
• Matching Controllers: cFP-2120, cFP-2220 Ethernet remote FieldPoint controllers
• Matching Terminal Blocks: cFP-CB-1 universal screw terminal block (non-isothermal, fully compatible)
• Official Replacement Model: NI-9472 C-series 8-channel sourcing digital output module
• Official Status: Fully end-of-life, no official firmware updates or factory repair, only aftermarket tested inventory

Software Compatibility

• Required Drivers: NI-FieldPoint legacy driver suite, NI-VISA underlying communication driver
• Configuration Tools: NI MAX, FieldPoint standalone I/O configuration utility
• Development Software: LabVIEW 2019 and earlier versions, LabWindows/CVI
• Supported OS: Windows XP/7/10; no native Windows 11 driver, incompatible with LabVIEW 2021+ releases

Pros & Limitations

• Pros: Sourcing output matching PNP field devices, independent channel electronic fuses for single-point fault isolation, faster switching latency than DO-403, built-in TVS for inductive load protection, lower static power consumption, full hazardous location certification, hot-swap maintenance
• Limitations: Sourcing-only output incompatible with NPN loads, lower single-channel current than DO-403, no inter-channel isolation, discontinued official technical support, limited 30VDC input voltage ceiling

Official Product Images & Visual Reference

• Front Panel Render: Standard grey cFP housing, 8 compact channel LEDs, dual global power/ready indicators
• Assembly Photo: cFP-DO-400 paired with cFP-CB-1 installed on cFP-BP-8 backplane
• DO-400 vs DO-403 Contrast: Appearance identical, only internal MOSFET and current parameters differ
• Document Source: NI official user manual 373355A, unwatermarked factory original images