· Product Introduction

The SPA analog data acquisition module is meticulously designed based on a new generation embedded system. The module is equipped with an isolated communication interface, which can communicate separately with a PC or PLC, or be networked with multiple communication modules. Simultaneously, the module is equipped with a transient suppression circuit, which can effectively suppress various surge pulses and protect the module for reliable operation in harsh environments.

SPA9080-WB series differential high-speed DC signal acquisition module. It acquires 4/8 channels of DC signals, utilizes TI dedicated high-speed ADC chips, and incorporates an advanced Successive Approximation Register (SAR) high-precision analog-to-digital converter. With a resolution of up to 16 bits and a measurement accuracy better than 0.05%, the module features isolation between power supply, input, and communication output. It is suitable for acquiring various analog signals in industrial settings and meets the requirements of demanding applications such as industrial field measurement, medical electronics, security monitoring, smart buildings, smart homes, power monitoring, and process control.

This product requires independent power supply and uses a DIN35mm standard rail mounting method. Field installation is simple, usage is flexible, and it can handle various field applications.

· Basic Parameters

Power Supply   DC12～36V(DC24V recommended)

Power Consumption ＜1.5W

Measurement Accuracy   ±0.05%F.S（+25℃）

Temperature Drift ≤200ppm/℃

ESD Protection ±15KV

Isolation Voltage 3000VDC

Power Protection Reverse connection voltage< -40V

Dielectric Strength 1500 VAC / 1 minute(Power, Input, Output)

Insulation Resistance ≥100MΩ (Power, Input, Output)

EMC Compatibility Complies with GB/T18268.1 (IEC61326-1)

Applicable Field Devices Devices supporting MODBUS-RTU protocol: Configuration software, PLC, HMI, PC, etc.

· Input Terminal

Number of Channels 4/8 channels

Input Range Refer to product naming

Input Impedance ≥10MΩ

Sampling Resolution 16-bit ADC（TI ADS8588 chip）

Sampling Rate Up to 10kSPS per channel

Input Overload Capacity  1.2 times the nominal input voltage

· Output Terminal

Output Signal RS-485/ Ethernet

Communication Protocol Standard MODBUS-RTU protocol

Communication Distance 1200m (RS485 typical)

· Environmental Conditions

Operating Temperature -40℃～+80℃

Storage Temperature -40℃～+85℃

Relative Humidity 10%～90%RH (non-condensing)

Atmospheric Pressure 80kPa～106kPa