Description
Key Technical Specifications
- Model Number: CFP-AI-111
- Manufacturer: National Instruments
- Series: Compact FieldPoint
- Module Type: Analog Current Input
- Channels: 16 Single-Ended
- Resolution: 16-Bit ADC
- Input Ranges: ±20 mA, 0–20 mA, 4–20 mA
- Input Impedance: 100 Ω
- Filters: 50 Hz, 60 Hz, 500 Hz (Software Configurable)
- Protection: 2,300 Vrms Transient Overvoltage, ±30 mA Overcurrent
NI CFP-AI-111
Functional Role & Application Analysis
The NI CFP-AI-111 is the standard high-density current input card for Compact FieldPoint systems. It directly measures 4-20 mA and other milliamp signals from field transmitters without external signal conditioning. This module solves the problem of noisy, long-distance analog signals by providing on-board filtering and 16-bit resolution right at the source. The shared COM terminal on the CFP-AI-111 simplifies wiring for loop-powered sensors but demands careful grounding to avoid ground loops.
Typical applications for the NI CFP-AI-111 include:
- Process Monitoring: Reading pressure, temperature, and flow transmitter signals in water treatment, HVAC, and light manufacturing applications.
- Energy Management: Monitoring motor current and power consumption across distributed equipment panels using Compact FieldPoint’s compact form factor.
- Legacy System Maintenance: Replacing failed analog input modules in aging Compact FieldPoint installations where original NI stock is scarce and lead times are prohibitive.
Our Quality Standard & Testing Process
A drifting analog input card gives you false confidence in your process data. We treat every CFP-AI-111 as a measurement-critical component. Our testing validates channel accuracy, filter performance, and backplane communication before shipment. We do not ship “as-is” surplus.
Our testing protocol:
- Visual & Connector Inspection: We inspect the terminal block for stripped threads, corrosion, and pin damage. The Compact FieldPoint connector is checked for proper seating and latch integrity.
- Live Backplane Test: The module is installed in a Compact FieldPoint test rack and verified to power up, enumerate correctly, and communicate with the controller.
- Full-Scale Accuracy Test: We inject precision current sources (4 mA, 12 mA, 20 mA) into each channel and verify the digital reading is within the 16-bit specification.
- Filter Verification: We confirm the 50/60/500 Hz notch filters are functioning and providing the specified attenuation at the target frequencies.
- Warranty Backing: Only modules passing all functional and accuracy tests are released. We back every CFP-AI-111 with a full 12-month warranty.
NI CFP-AI-111
Compatibility & Migration Paths
The is specific to the Compact FieldPoint platform. It is not compatible with standard FieldPoint (non-Compact) or newer cDAQ/cRIO systems. The 16-channel density and shared COM terminal are key differentiators from the 8-channel CFP-AI-110.
Critical compatibility checks:
- Backplane Compatibility: Confirm you are using a Compact FieldPoint backplane (e.g., cFP-BP-4). This module will not fit or function in standard FieldPoint or other NI platforms.
- Wiring Configuration: Understand the shared COM terminal. All 16 channels reference the same isolated ground. If your application requires channel-to-channel isolation, this is not the correct module.
- Power Supply: Verify your Compact FieldPoint power supply can handle the additional load. Sixteen active current input channels draw measurable current from the backplane.
- Get Expert Help: Unsure if fits your Compact FieldPoint setup or if you need the 8-channel CFP-AI-110 instead? Send us a photo of your backplane and existing modules. We will verify the exact match for your application.
