Analog I/O Module

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• Flexible Multi-Channel Configuration
• High-Precision Signal Processing
• Comprehensive Diagnostics & Fault Detection
• Multi-Layer Protection Design
• Per-Channel Configuration with High Scalability

High-Precision Analog I/O Control Module

The SA-8801 Analog I/O Module delivers high-precision, multi-channel analog signal processing with support for both voltage and current input/output switching. It features per-channel configuration and integrated diagnostic capabilities.

With high-resolution ADC/DAC and robust protection design, the SA-8801 ensures stable operation across a wide range of industrial control and equipment monitoring applications—enhancing system integration efficiency and simplifying maintenance.

Specifications
Product Name: Analog I/O Module
Model: SA-8801

［Analog Input］
Channels:
4 channels (configurable as input/output; supports voltage/current)
Type: Analog Input (Voltage / Current / ADC)
Range:
• Voltage Input: 0–10 V
• Current Input: 4–20 mA

Resolution: 24-bit
Input Impedance / Current Mode: High impedance in voltage mode; supports internal loop-powered configuration for 4–20 mA input
Overvoltage Protection: Withstands up to ±40 V (absolute maximum), with ESD protection
Overcurrent Protection: Maximum 25 mA (DAC current input); supports short circuit (SC) and open circuit (OC) fault flags
Per-Channel Configuration: Each channel supports independent configuration of mode, range, diagnostics, and power switching (AVDD_HI/LO)
Disconnection Detection: Supports open/short circuit diagnostics (SC for current input, OC for voltage input) with status flags
Isolation: External ADuM digital isolator with 2.2 mm isolation gap

［Analog Output］
Channels: 4 channels (configurable as input/output; supports voltage/current)
Type: Voltage Output / Current Output / Digital I/O
Range:
• Voltage Output: 0–10 V
• Current Output: 4–20 mA

Resolution: 16-bit DAC
Output Accuracy: Current Output TUE: ±0.2% FSR
Fault Diagnostics: Supports open/short circuit detection (OC for current output, SC for voltage output) with channel status flags
Output Capability: Max current output: 20 mA, with current limiting (internal RSENSE); short-circuit protection voltage approx. -120 ~ 240 mV
Power-On Default: Voltage output: 0 V; Current output: 0 mA; ADC inactive (safe default state)
Isolation: X1

［Technical Specifications］
Data Acquisition:
OpenThread (802.15.4)
Data Update Rate:
• Thread: 1 minute
• Local Measurement: 0.5 second
• Modbus RS485: 0.5 second