The SAI143-H53 STYLE S3 is an advanced Analog Input Module developed by Yokogawa for use in industrial automation systems. It is specifically designed to handle 4 to 20 mA current input signals from field devices and supports HART communication, making it ideal for modern control and monitoring systems. The module provides 16 input channels with high accuracy and isolation, and it supports dual redundancy for enhanced reliability.
Key Features
- Analog Input Capabilities:
- Inputs 4 to 20 mA signals with a permissible range of 0 to 25 mA.
- Supports 16 channels with module isolation.
- Rated accuracy: ±16 µA (for input range 0.05 to 23 mA).
- HART Communication:
- Supports one HART device per channel.
- Complies with HART Protocol Revision 5.7, with backward compatibility for HART 5, 6, and 7 devices.
- Includes a built-in HART modem, enabling concurrent communication with one HART device per module.
- Power Supply for Field Devices:
- Integrated transmitter power supply: 16.15 V (minimum) at 20 mA and 26.4 V (maximum) at 0 mA.
- Output current limit: 25 mA.
- Allows for individual 2-wire or 4-wire configurations for each channel.
- Redundancy and Reliability:
- Dual-redundant configurations are supported.
- Includes internal voltage protection and residual voltage suppression for added safety.
- Enhanced Performance:
- Data update frequency: 40 ms.
- Temperature drift: ±16 µA per 10°C.
- Withstand voltage: 1.5 kV AC between input signals and the system.
- Environmental and Physical Specifications:
- Operating temperature: -20 to 70°C.
- Maximum current consumption:
- 5 V system: 320 mA.
- 24 V system: 550 mA.
- Weight: Approx. 0.34 kg (pressure clamp terminal block) or 0.39 kg (signal cable interface adapter).
HART Communication Specifications
| Attribute |
Details |
| Communication Mode |
Serial half-duplex, start-stop synchronization |
| Transmission Speed |
1200 ± 2 bps |
| Modulation Technique |
Binary phase-continuous FSK |
| Applicable Standard |
HART Protocol Revision 5.7 |
| Frame Length |
Up to 267 bytes |
| Response Time |
Max. 256.7 ms (28 characters) |
| Error Detection Coding |
Longitudinal/vertical parity |
Technical Specifications
| Attribute |
Details |
| Number of Channels |
16 |
| Input Range |
4 to 20 mA (0 to 25 mA permissible) |
| Input Impedance (Power ON) |
250 Ω + Current value |
| Input Impedance (Power OFF) |
500 kΩ minimum |
| Accuracy |
±16 µA (0.05 to 23 mA input range) |
| Data Update Frequency |
40 ms |
| Power Supply Voltage |
16.15 V to 26.4 V |
| Withstand Voltage |
1.5 kV AC for 1 minute |
Model and Suffix Codes
| Model |
Description |
| SAI143-H |
Analog Input Module with HART communication |
| Suffix Code |
Description |
| 5 |
Pressure clamp terminal block or MIL cable |
| 3 |
ISA Standard G3 with extended temperature range (-20 to 70°C) |
Applications
- Industrial Automation:
- Monitoring and controlling processes in plants and facilities.
- Field Instrumentation:
- Integration with HART-enabled devices for diagnostics and configuration.
- Redundant Systems:
- Ensures high reliability in safety-critical applications.
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