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Product Overview
The Yokogawa SAI143-S03 S1 is a high-performance 16-channel analog input module designed for integration within the ProSafe-RS safety instrumented system. Supporting 4–20 mA current inputs with channel-level isolation and precise accuracy, it enables reliable signal acquisition from process transmitters in industrial environments. The module is engineered to ensure safety, operational efficiency, and long-term stability even in harsh conditions. With the flexibility of individual 2-wire or 4-wire channel settings, and compatibility with redundant configurations, the SAI143 is well-suited for safety-critical applications requiring accurate and resilient analog input processing.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | SAI143-S03 S1 |
| Input Type | Analog current (4 to 20 mA) |
| Number of Input Channels | 16 channels |
| Permissible Input Range | 0 to 25 mA |
| Input Impedance (Power ON) | 250 Ω + current value dependent |
| Input Impedance (Power OFF) | ≥ 500 kΩ |
| Rated Accuracy | ±16 µA (1 to 23 mA) |
| Data Update Frequency | 40 ms |
| Temperature Drift | ±16 µA/10°C |
| Withstand Voltage | 1.5 kV AC (input signal to system, 1 minute) |
| Transmitter Power Supply | 16.15 V min (20 mA), 26.4 V max (0 mA), 25 mA limit |
| External Connections | Pressure clamp terminal, MIL cable, or dedicated signal cable |
| Configuration | Individual channel 2-wire/4-wire setting |
| Module Isolation | Yes |
| PRM/HART Communication | Supported (HART version: SAI143-H only) |
| Power Consumption | 5V system: 320 mA, 24V system: 550 mA |
| Dimensions (W x H x D) | 130 x 107.5 x 32.8 mm |
| Weight | 0.34 kg |
Applications
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Safety Instrumented Systems (SIS) in oil & gas, petrochemical, and power generation plants
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Redundant and fail-safe process monitoring environments
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Analog signal acquisition for pressure, flow, level, and temperature transmitters
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Distributed control systems with strict safety and reliability requirements
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Integration into ProSafe-RS systems for mission-critical analog input processing
Advantages
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High Channel Density: 16 isolated input channels per module improve I/O efficiency
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Excellent Accuracy: ±16 µA ensures precise signal measurement
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Redundant Design Support: Supports dual-redundant configuration for enhanced system reliability
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Wide Input Range: Accepts up to 25 mA to handle signal overruns safely
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Low Voltage Drop: Maximizes power delivery to field transmitters
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Environmentally Robust: Designed for operation under industrial conditions up to 70°C
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PRM and HART Support: Advanced diagnostics and remote device management (for SAI143-H)
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Flexible Wiring: Supports both 2-wire and 4-wire field instruments
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Modular Integration: Easily fits into existing Yokogawa FIO backplanes
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Strong Isolation: Ensures signal integrity and safety barrier compliance
Frequently Asked Questions (FAQ)
Q1: What type of signals does the SAI143-S03 S1 module accept?
A1: It accepts 4 to 20 mA analog current signals, with a permissible range up to 25 mA.
Q2: How many input channels are available?
A2: The module provides 16 isolated input channels.
Q3: Is HART communication supported in this model?
A3: HART communication is supported only in the SAI143-H variant, not in SAI143-S03 S1.
Q4: What is the input impedance when the module is powered on?
A4: The impedance is 250 Ω plus a current-dependent value.
Q5: What are the module’s dimensions and weight?
A5: The size is 130 x 107.5 x 32.8 mm, and the weight is approximately 0.34 kg.
Q6: Can this module be used in redundant configurations?
A6: Yes, it supports dual-redundant operation for increased safety and availability.
Q7: What is the data update interval?
A7: The module updates input data every 40 milliseconds.
Q8: Does the SAI143-S03 S1 provide a transmitter power supply?
A8: Yes, each channel can supply power to a field transmitter with current-limited output.
Q9: What type of field wiring configurations are supported?
A9: Both 2-wire and 4-wire configurations can be set individually per channel.
Q10: What is the rated accuracy of this module?
A10: The rated accuracy is ±16 microamperes for input ranges from 1 to 23 mA.
Recommended Related Models (Same Series / Functional Category)
| Model | Function | Channels | Signal Type | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| SAI143-H03 | Analog Input + HART | 16 | 4–20 mA | 130 x 107.5 x 32.8 | 0.34 |
| SAV144-S03 | Analog Voltage Input | 16 | 1–5 V / 1–10 V | 130 x 107.5 x 32.8 | 0.24 |
| SAT145-S03 | Thermocouple/mV Input | 16 | TC / mV | 130 x 159.8 x 32.8 | 0.47 |
| SAR145-S03 | RTD Input | 16 | Pt/Ni RTDs | 130 x 159.8 x 32.8 | 0.47 |
| SAI533-H03 | Analog Output + HART | 8 | 4–20 mA | 130 x 107.5 x 32.8 | 0.26 |
| SAI533-S03 | Analog Output (Standard) | 8 | 4–20 mA | 130 x 107.5 x 32.8 | 0.26 |
Popular Yokogawa Models (Same Brand)
| Model | Function | Channels | Signal Type | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| PW402 | Power Supply Module | N/A | Power Distribution | 130 x 107.5 x 32.8 | 0.34 |
| ADV151-P00 | Digital Output Module | 16 | DO (24 VDC) | 130 x 107.5 x 32.8 | 0.30 |
| AAI143-H50 | Analog Input (HART) | 16 | 4–20 mA | 130 x 107.5 x 32.8 | 0.34 |
| AAR181-S00 | Pulse Input Module | 8 | Pulse/Frequency | 130 x 107.5 x 32.8 | 0.32 |
| AAI543-H50 | Analog Output (HART) | 8 | 4–20 mA | 130 x 107.5 x 32.8 | 0.33 |
| CP451-10 | Processor Module | N/A | CPU for ProSafe-RS | 130 x 107.5 x 32.8 | 0.50 |
