Product Description
The SAI533-H53/A4S00 is a high-integrity analog output module specifically engineered for the Yokogawa Electric Corporation ProSafe-RS Safety Instrumented System (SIS).
This module provides 8 isolated 4–20 mA output channels, designed to drive final control elements such as control valves, shutdown valves, and actuators within safety-instrumented loops. Built for high availability, the SAI533-H53/A4S00 supports dual-redundant configurations and incorporates comprehensive internal diagnostics to meet SIL3 safety requirements.
The “H53” designation identifies this as a HART-compatible model, enabling bidirectional digital communication over the analog current signal. This allows enhanced field device diagnostics, remote configuration, and integration with asset management systems.
The module also features G3 conformal coating for reliable operation in corrosive industrial environments, including offshore and chemical processing facilities.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Identifier | SAI533-H53/A4S00 |
| System Platform | ProSafe-RS (SIS) |
| Output Channels | 8 channels (channel-to-system isolation) |
| Signal Type | 4–20 mA DC current output |
| Guaranteed Precision Range | 1.25 mA to 23 mA |
| Allowable Load Resistance | 230 Ω to 600 Ω (at rated 4–20 mA range) |
| Static Accuracy | ±48 µA (at 23°C) |
| Data Update Cycle | 40 ms |
| Temperature Drift | ±16 µA per 10°C |
| Dielectric Withstand Voltage | 1.5 kV AC (output-to-system logic) |
| Power Consumption (5 V DC) | 320 mA max |
| Power Consumption (24 V DC) | 300 mA max |
Industrial Application Scenarios
The SAI533-H53/A4S00 is a critical output interface in functional safety systems across heavy industries, including:
-
Emergency Shutdown Systems (ESD): Actuating shutdown valves to isolate process units during abnormal conditions
-
Fire and Gas Systems (F&G): Activating deluge valves, dampers, or suppression systems upon hazard detection
-
Critical Process Protection: Controlling high-pressure steam or fuel valves where failure to respond could cause severe equipment damage
-
Petrochemical and Power Plants: Final element control in high-risk process areas
FAQ
Can the SAI533-H53/A4S00 be used in non-redundant configurations?
Yes, the module can operate as a standalone unit. However, for SIL3 applications, it is typically installed in a redundant pair within the ProSafe-RS rack to ensure maximum availability and fault tolerance.
Does this module support HART passthrough?
Yes. The SAI533-H53/A4S00 enables direct communication between the ProSafe-RS system or an asset management platform (such as Yokogawa PRM) and HART-enabled smart positioners for remote calibration and diagnostics.
What is the significance of the A4S00 suffix?
The A4S00 suffix specifies the terminal block and connector interface type, ensuring compatibility with Yokogawa pressure clamp terminals or KS cable connections for simplified and secure field wiring.
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| Condition | 100% New with Original Package |
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| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
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| A: All our new and original products come with a standard one-year warranty. |
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