I. Basic Information

Model: CFP-CB-1 (cFP-CB-1)

Manufacturer: National Instruments (NI)

Series: Compact FieldPoint (cFP)

Status: Obsolete

Part Number: 778618-01

Location: General wiring base for cFP module, with cold junction compensation for thermocouples (CJC)

II. Core Specifications (Wiring and Electrical)

Number of terminals: 36 screw terminals (V+, C-, signals, ground)

Terminal type: With color coding (V/C distinction), facilitating identification

Cold end compensation (CJC): Built-in thermistor, thermocouple accuracy ±0.15~0.3 °C

Rated voltage: 250 VAC (safety isolation)

Rated current:

V/C power terminals: 4 A

Signal terminals: 2 A

Wiring specification: 16–26 AWG copper wire, stripping length 6 mm

Screw torque: 0.5–0.6 N·m (4.4–5.3 lb·in)

Cable fixation: Double stress release rods + braid slot, anti-vibration / shock resistance

Protection level: IP20 (prevents finger contact)

III. Mechanical and Environmental

Dimensions: 127 × 66 × 24 mm (same as cFP module)

Weight: Approximately 110 g

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

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

Humidity: 10%–90% RH, no condensation

IV. Function and Usage

General wiring: Compatible with all cFP I/O modules (AI-100/102/111, AO-200/210, DI/DO, etc.)

Thermocouple CJC: Built-in thermistor, thermocouple module (e.g., cFP-AI-111) is necessary

Power distribution: V+ (24V), C- (ground) terminals centralized power supply

Anti-vibration wiring: Stress release + braid slot, suitable for high-vibration industrial sites

Centralized management: 36 terminals unified wiring, reducing on-site clutter

V. Compatibility and Alternatives

Compatible modules: Full series of cFP I/O (AI/AO/DI/DO/Counter)

Compatible backplanes: cFP-BP-4 (4 slots), cFP-BP-8 (8 slots)

Discontinued replacement: No direct replacement; new system uses C-series terminal base (e.g., NI-9923, compatible with cDAQ-918x chassis)

VI. Common Combinations

cFP-AI-111 + CFP-CB-1: 16-channel thermocouple, CJC necessary

cFP-AO-200 + CFP-CB-1: 8-channel 4–20mA output, power / signal centralized

cFP-AI-100 + CFP-CB-1: 8-channel voltage / current input, general wiring