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Yokogawa SAI143-H63 S4 Analog Input Module

Configured for high-accuracy current signal acquisition in CENTUM VP control systems, the Yokogawa SAI143-H63 S4 (SAI143 Analog Input Module) provides direct physical/electrical execution.

Suffix Breakdown & Model Matrix

Model / Suffix Code Specification
SAI143 Analog Input Module (4-20 mA, 16-channel, module isolation)
-H HART communication support enabled type
6 Dual-redundant execution capable configuration
3 Dedicated interface connection style
S4 Style code 4 hardware release revision

Hardware Specifications

Parameter Specification
Model SAI143-H63 S4
Brand Yokogawa
Origin Japan
Weight 0.34 kg
Dimensions 12.7 cm x 22.9 cm x 17.8 cm
Operating Temp 0 to +55 deg C
Power Consumption 320 mA at 5 VDC / 550 mA at 24 VDC
Input Channels 16 channels
Rated Input Range 4 to 20 mA DC
Permissible Input Range 0 to 25 mA DC
Input Impedance 250 ohm + current value (Power-ON)
Data Update Frequency 40 ms
Isolation Voltage 1500 VAC between input signal and system for 1 min

4-20 mA HART Loop Protocol & Channel Isolation

The Yokogawa SAI143-H63 S4 analog input module processes process transmitter telemetry using integrated 4-20 mA HART loop protocol support across 16 isolated channels. Internal module isolation circuitry rated for 1500 VAC withstand voltage protects the control station backplane against field voltage surges. The unit provides dedicated transmitter power supply lines yielding 16.15 V minimum at 20 mA, allowing individual channel jumper selection for 2-wire or 4-wire current loop configurations.

Frequently Asked Questions

Q: How is transmitter power switching configured across the input channels?

A: The onboard transmitter power supply ON/OFF function is available in 2-wire settings simultaneously for all 16 input channels.

Q: What is the minimum input impedance when the module is in a powered-off state?

A: During Power-OFF conditions, the module presents an input impedance of 500 k-ohm minimum to protect field loop current paths.

Q: Which external connection options support field wiring interface?

A: The module accommodates pressure clamp terminal blocks, MIL cable assemblies, or dedicated signal cable interface adapters.

Field Installation Guidelines

Engineers must follow standard industrial signal wiring procedures during field setup:

  1. Insert the module into the designated I/O chassis slot and secure the retaining latches to ensure proper backplane connector alignment.
  2. Select 2-wire or 4-wire operation mode per channel by adjusting internal hardware setting pins before terminating field wiring.
  3. Route field wiring using shielded cables, isolating analog signal lines from AC distribution and high-current motor feeds.
  4. Connect cable shield drain wires to the dedicated protective earth (PE) grounding terminal at a single connection point.

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