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Home > Electrical & Electronics > Electrical Control System > NI SCXI-1160 General-Purpose Relay Switch Module

NI SCXI-1160 General-Purpose Relay Switch Module

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NI SCXI-1160 General-Purpose Relay Switch Module photo-4

Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)

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Material:

Other, Global universal model

Condition:

Other, Global universal model

Task:

Other, Global universal model

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Guizhou Yuanmiao Automation Equipment Co., Ltd.

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China

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Material Other, Global universal model

Condition Other, Global universal model

Task Other, Global universal model

Mathematical Model Other, Global universal model

Signal Other, Global universal model

Customized Non-Customized

Structure Other, Global universal model

Input Range ±10V, ±5V, ±1V, ±100mV

Operating Temperature -40°C to +85°C

Dimensions 1.2×6.8×8.0 inches

NI SCXI-1160I. Functions

The NI SCXI-1160 is a high-performance signal conditioning module primarily used for isolation, amplification, and filtering of analog signals in industrial environments, suitable for sensor signal acquisition and control systems. Its core advantages lie in high isolation, programmable parameter configuration, and multi-scenario compatibility, often used in conjunction with NI DAQ systems.

II. Product Features

Channel and Isolation Performance

Equipped with 8 analog input channels, each providing 2500V rms operational isolation—far exceeding standard modules’ isolation levels. This effectively blocks high-voltage interference and ground loop noise, making it suitable for strong electrical environments (e.g., power systems, motor control).
Isolation technology uses transformer coupling or optocoupler isolation to ensure electrical independence between channels and between channels and ground, protecting downstream equipment.

Signal Processing Capability

Flexible input range: Supports multi-range voltage signals (±10V, ±5V, ±1V, ±100mV), adapting to output signals from thermocouples, strain gauges, pressure sensors, etc.
Programmable gain and filtering: Gain can be configured as 1, 10, 100, or 1000× to adapt to different input amplitudes; low-pass filter cutoff frequency is adjustable from 10Hz to 10kHz to filter out high-frequency noise (e.g., electromagnetic interference).

Calibration and Protection Mechanisms

Built-in automatic offset calibration function: Grounds inputs via software triggering to compensate for zero-drift errors; EEPROM stores calibration constants for each channel to maintain long-term accuracy.
Overvoltage protection: Input channels withstand ±30V transient voltage to prevent module damage from sensor failures or wiring errors.

Communication and Compatibility

Relies on NI-DAQmx 9.0 and later drivers, compatible with development environments like LabVIEW and LabWindows/CVI. Parameters can be quickly configured via the Measurement & Automation Explorer (MAX) tool.
Supports parallel output (each channel independently connects to a DAQ card) and multiplexed output (8 channels time-share a single channel), adapting to different data acquisition schemes.

Modular Design

Can be stacked with other SCXI modules (e.g., SCXI-1125, SCXI-1141) to expand channel count or functions (e.g., adding filtering/amplification stages), constructing complete signal conditioning systems.

III. Technical Parameters

Parameter Category	Specific Index
Input Range	±10V, ±5V, ±1V, ±100mV
Accuracy	±0.05% of reading + 2μV
Input Impedance	1MΩ (differential) / 10GΩ (common-mode)
Isolation Voltage	2500V rms (channel to ground/channel)
Attenuation Rate	80dB/decade (low-pass filter)
Passband Flatness	±0.1dB
Power Supply	±5V, ±15V (external)
Operating Temperature	-40°C to +85°C
Dimensions	1.2×6.8×8.0 inches

IV. Typical Application Scenarios

Power System Monitoring

Acquires voltage/current signals from substations and high-voltage equipment. 2500V isolation prevents damage from strong electrical interference, enabling real-time monitoring of grid parameters (e.g., harmonics, power factor).

Industrial Automation and Motor Control

Collects motor speed and torque sensor signals. Isolation design avoids measurement interference from electromagnetic noise generated by frequency converters, supporting real-time data feedback for closed-loop control systems.

High-Voltage Environment Testing

Processes high-voltage sensor signals (e.g., high-voltage capacitor voltage, high-pressure fluid pressure) in aerospace and new energy (e.g., lithium battery charge/discharge testing) to ensure measurement system safety.

Scientific Research and Laboratory Measurements

Adapts to high-precision sensors (e.g., strain gauges, piezoelectric sensors) for material mechanics testing, vibration analysis, etc. High isolation avoids ground loop interference between multiple devices.

V. Working Principle

Core Components of Hardware Architecture

Input front-end: Includes overvoltage protection circuits (TVS diodes) and signal buffers to limit transient voltage and match sensor output impedance.
Isolation amplifier: Uses high-isolation instrumentation amplifiers (e.g., AD210) to achieve signal transmission via transformer coupling while blocking DC interference paths.
Filter module: Eighth-order low-pass elliptical filter with programmable cutoff frequency via switched-capacitor technology, maintaining high attenuation across a wide frequency range.
Calibration unit: Built-in analog switches ground inputs when triggered, calculating offset errors stored in EEPROM for automatic compensation during subsequent acquisitions.

Signal Processing Flow

Signal input and protection: Sensor signals enter differential input channels via protection circuits; 1MΩ high impedance reduces loading effects.
Isolation amplification: Isolation amplifiers adjust gain for differential signals (e.g., 100× amplification) while suppressing common-mode interference (CMRR >110dB).
Filtering and output: Low-pass filters attenuate high-frequency noise per configuration; output signals are buffered and transmitted to DAQ devices with 50Ω output impedance for cable matching.
Electrical isolation: 2500V rms isolation fully separates input and output circuits, avoiding current loops from ground potential differences—suitable for multi-ground system scenarios.

Control and Communication Mechanisms

Configure gain and filtering parameters via NI-DAQmx driver software; platforms like LabVIEW enable real-time module function invocation. The module supports external clock input for synchronizing multi-channel sampling or filter cutoff frequency adjustment.

VI. Comparison with Other SCXI Modules

Module Model	Isolation Voltage	Typical Applications	Core Differences
SCXI-1125	300V rms	General signal acquisition in industrial noise environments	Lower isolation, suitable for medium-low voltage scenarios
SCXI-1141	No isolation	Filtering and amplification of sensor signals	Focused on filtering, no isolation design
SCXI-1160	2500V rms	High-voltage environments, strong electrical interference scenarios	High isolation, suitable for power and high-voltage testing fields

VII. Summary

With its high isolation performance and flexible signal conditioning capabilities, the NI SCXI-1160 serves as a core module for data acquisition in high-voltage and strong interference environments. Its 2500V rms isolation design not only ensures measurement accuracy but also provides safety protection for equipment and personnel, widely used in industries, power systems, scientific research, and other scenarios with strict isolation requirements.

Product Tags: SCXI-1160 , SCXI-1125 , SCXI-1104C