I. Basic Information

Model: cFP-AI-102

Manufacturer: National Instruments (NI)

Series: Compact FieldPoint (cFP) I/O Module

Status: Obsolete

Alternative Model: NI-9221 (C Series, ±60V, 800kS/s, 12-bit 8-Channel)

Position: High Voltage Voltage Signal Acquisition (Battery Pack, Fuel Cell, DC Bus, Grid Monitoring)

II. Core Hardware Specifications (High Voltage Specialized)

Channels: 8 analog inputs (single-ended, common ground reference)

Resolution: 12-bit ADC

Total update rate: 360 Hz (all channels)

Input range (software selectable, independent per channel):

0–20 V, 0–60 V, 0–120 V

±20 V, ±60 V, ±120 V (maximum)

Accuracy: ±(0.1% reading + 0.1% range)

Isolation: 250 Vrms CAT II (channel-to-ground isolation)

Overvoltage protection: Can withstand 2300 V transient spikes (I/O and bus)

Input impedance: 1 MΩ (high voltage specialized)

Effective resolution: 15 mV (±20V) ~ 125 mV (±120V)

Diagnosis: Overrange detection, open/closed circuit diagnosis, onboard linearization

III. Environment and Mechanics

Operating temperature: -40 °C ~ +70 °C (industrial wide temperature range)

Humidity: 10%–90% RH, no condensation

Size: 92 × 60 × 20 mm

Weight: Approximately 115 g

Installation: cFP-BP-4 / BP-8 backplane, hot-swappable

Terminal base: FP-TB-x (high voltage specialized terminal)

IV. cFP-AI-100 vs cFP-AI-102 (Key Differences) Table

Comparison items: cFP-AI-100 (standard version) cFP-AI-102 (high-voltage version)

Maximum range: ±30 V / 4–20 mA ±120 V (pure voltage)

Signal type: Voltage + Current (4–20mA) Only voltage (high-voltage specific)

Isolation: 250 Vrms 250 Vrms

Typical applications: Sensors, transmitters, ordinary industrial voltage High-voltage battery, DC bus, grid monitoring

Replacement in case of discontinuation: NI-9207 NI-9221

V. Typical application scenarios (high-voltage specific)

High-voltage battery group monitoring: Electric vehicles / Energy storage batteries (up to 120V) single cell and total pressure collection

Fuel cell testing: Stack voltage, single cell inspection

Industrial DC bus: 24V/48V/60V/120V power supply monitoring

Grid and distribution: Low-voltage AC/DC voltage waveform collection

Monitoring of high-power equipment: Frequency converter, servo power supply, high-voltage sensor