Yokogawa SAI143-H63 | 16-Channel HART Analog Input Module | DCS Replacement

Yokogawa SAI143-H63 | 16-Channel HART Analog Input Module | DCS Replacement

  • Model: SAI143-H63
  • Manufacturer: Yokogawa
  • Series: ProSafe-RS / FIO analog I/O
  • Product Type: 16-channel isolated analog current input module
  • Core Function: Acquires 4–20 mA field signals and supports HART communication with compatible field instruments.
  • Configuration: HART, signal cable interface adapter, no explosion protection, ISA Standard G3, -20°C to +70°C.
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Category: SKU: Yokogawa SAI143-H63

Description

Technical Specifications

Parameter Specification
Model SAI143-H63
Manufacturer Yokogawa
Module type Analog current input
Number of channels 16
Channel isolation Module isolation
Rated input range 4–20 mA DC
Permissible input range 0–25 mA
Input accuracy ±16 μA, over 0.05–23 mA
Data update frequency 40 ms
Temperature drift ±16 μA per 10°C
Input impedance, power ON Approximately 250 Ω plus internal protection-circuit voltage drop
Input impedance, power OFF 500 kΩ minimum
Transmitter supply 16.15 V minimum at 20 mA; 26.4 V maximum at 0 mA
Transmitter current limit 25 mA
2-wire / 4-wire configuration Individually selectable by setting pins
HART communication Supported
Input-to-system withstand voltage 1.5 kV AC for 1 minute
Maximum current consumption 320 mA at 5 V; 550 mA at 24 V
Operating temperature -20°C to +70°C
Interface Signal cable interface adapter
Explosion protection Not included
Weight Approximately 0.39 kg with signal cable interface adapter

 

Product Introduction

Yokogawa SAI143-H63 Analog Input Module

The Yokogawa SAI143-H63 is a 16-channel analog current input module designed for Yokogawa distributed control and safety-system I/O installations. It accepts 4–20 mA signals, provides module-level isolation, and supports HART communication for compatible field transmitters. Its signal cable interface adapter configuration distinguishes it from versions intended for pressure-clamp terminal blocks or MIL cable connections.

SAI143-H63

The module’s 40 ms data update frequency and ±16 μA rated accuracy support process-variable acquisition in applications requiring consistent signal monitoring. Individual 2-wire and 4-wire channel settings allow different transmitter arrangements, but the field wiring and transmitter power requirements must be checked before installation.

 

Application Scenarios & Field Pitfalls

The SAI143-H63 is suitable for process installations that collect analog measurements from pressure, flow, level, and other 4–20 mA transmitters. HART support adds access to compatible instrument information through the control-system communication architecture, subject to system software and configuration requirements.

Typical application scenarios

  • Pressure measurement: Acquires 4–20 mA signals from pressure transmitters and supports HART-enabled instrument maintenance.
  • Flow monitoring: Collects flow-transmitter signals for process monitoring and control.
  • Tank and vessel level measurement: Receives analog output from compatible level transmitters.
  • Safety-system signal acquisition: Supports analog input applications in compatible Yokogawa ProSafe-RS configurations.

Field engineering warnings

  1. Check the complete suffix. The SAI143-H63 is not identical to SAI143-S63. The H version supports HART, while the S version is the standard type. The 6 and 3 suffixes also determine the connection arrangement and environmental specification.
  2. Verify the cable adapter. This version uses a signal cable interface adapter. Confirm the corresponding cable, terminal arrangement, and cabinet connection before ordering. Do not assume that a pressure-clamp or MIL-cable installation can accept it directly.
  3. Check transmitter wiring. The module supports individually selected 2-wire and 4-wire configurations. Incorrect setting-pin positions can prevent proper signal acquisition or create wiring problems.
  4. Observe intrinsic-safety restrictions. The published specification states that Zener barriers must not be connected to this module. Confirm the approved isolation-barrier arrangement for hazardous-area circuits.
  5. Confirm software compatibility. HART functionality requires the applicable Yokogawa system software support. The HART suffix is associated with release R1.02.00 or later; check the actual host-system version before replacement.

 

Related Products

Model Function and difference
SAI143-S63 Standard 16-channel 4–20 mA analog input version without the HART option.
SAI143-H53 HART analog input variant with a different external connection configuration; verify the required cable or terminal arrangement.
SAI143-H63/PRP configuration with a prevention pin for incorrect insertion, where specified.
SAV144 Isolated analog voltage input module for 1–10 V signals; not a current-input substitute.
SAT145 Isolated thermocouple/mV input module for temperature measurement.
SAR145 Isolated RTD input module for resistance temperature sensors.
SAI533 Isolated analog current output module; used for output signals rather than field-current acquisition.

Procurement recommendation: Specify the complete model , including the HART option and signal cable interface adapter. Before installation, compare the nameplate, adapter type, setting-pin configuration, and host-system software revision with the existing module. The SAI143 family supports dual-redundant configurations, but the terminal assembly and system arrangement must also support the intended redundancy design.

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