Description
Product Overview
The Yokogawa SAI143-H53A4D00 is a 16-channel analog input module designed for Yokogawa ProSafe-RS safety instrumented systems. It receives 4–20 mA signals from field transmitters and makes the measured process values available to the safety control system. Typical signal sources include pressure, temperature, flow, and level transmitters equipped with current-loop outputs. Its module-isolated input architecture supports process signal acquisition in installations where reliable separation between field signals and system electronics is required.
The -H suffix identifies the HART communication version of the SAI143 module. This allows compatible HART field devices to exchange digital information over the analog current loop, in addition to transmitting the standard 4–20 mA process value. The 53 suffix identifies the pressure-clamp-terminal or MIL-cable connection configuration without explosion protection. The /A4D00 option specifies a dual-redundant pressure clamp terminal block, identified as STA4D-00. This configuration is intended for installations requiring a redundant terminal arrangement and must be matched with the correct terminal hardware and system wiring.
For maintenance and procurement teams, the Yokogawa SAI143-H53A4D00 is relevant when replacing or expanding an existing ProSafe-RS analog input installation. The module supports 16 isolated input channels, a rated 4–20 mA input range, and a 40 ms data update frequency. Its HART function can support field-device management through compatible Plant Resource Manager arrangements. Before installation, verify the exact suffix, terminal board, field wiring, channel configuration, and redundancy design. A standard SAI143 module or a version with a different terminal interface should not be assumed to be a direct substitute.
Product Introduction (Non-Templated)
A safety system’s analog input module must do more than read a current loop. It must preserve the intended channel arrangement, signal isolation, and field-device communication configuration. The SAI143-H53A4D00 combines 16-channel 4–20 mA acquisition with HART capability and a dual-redundant pressure clamp terminal option.
During replacement work, verify both the module suffix and the STA4D-00 terminal arrangement. A mismatch can create wiring and redundancy problems even when the base SAI143 model is correct.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | -H53A4D00 |
| Manufacturer | Yokogawa |
| System Family | ProSafe-RS |
| Product Type | HART analog input module |
| Input Signal | 4–20 mA |
| Number of Channels | 16 |
| Channel Isolation | Module isolation |
| Permissible Input Range | 0–25 mA |
| Input Impedance, Power ON | 250 Ω plus input-current-dependent component |
| Input Impedance, Power OFF | 500 kΩ minimum |
| Rated Accuracy | ±16 µA, HART version |
| Data Update Frequency | 40 ms |
| HART Support | Yes |
| HART Protocol | Revision 5.7 implementation |
| Transmitter Supply | 16.15 V minimum at 20 mA; 26.4 V maximum at 0 mA |
| Output Current Limit | 25 mA |
| 2-Wire / 4-Wire Configuration | Individually configurable by channel |
| Withstand Voltage | 1.5 kV AC between input signal and system for 1 minute |
| 5 V System Consumption | 320 mA maximum |
| 24 V System Consumption | 550 mA maximum |
| Terminal Configuration | Dual-redundant pressure clamp terminal block |
| Terminal Board | STA4D-00 |
| Explosion Protection | Not included in H53 configuration |
| Weight | Approximately 0.34 kg with pressure-clamp terminal or MIL cable configuration; verify complete assembly weight |
Specifications are based on Yokogawa documentation and the published suffix-code definitions. Confirm the exact assembly and terminal-board configuration before ordering.
SAI143-H53A4D00
Related Products
The following are related Yokogawa ProSafe-RS modules and terminal accessories. They are not all direct replacements.
- -H53 – HART analog input module with pressure-clamp-terminal or MIL-cable connection configuration.
- -H53/A4S00 – HART analog input version with STA4S-00 pressure clamp terminal.
- -H53/A4S10 – HART analog input version with STA4S-10 terminal and surge absorber.
- -H53/A4D10 – HART analog input version with STA4D-10 dual-redundant terminal and surge absorber.
- -H63 – HART analog input module with signal cable interface adapter.
- -H63/A4D00 – HART analog input version with dual-redundant terminal option.
- -S53 – Standard 4–20 mA analog input module without HART.
- STA4D-00 – Dual-redundant pressure clamp terminal block for analog input modules.
Check terminal compatibility, HART requirements, redundancy configuration, and explosion-protection requirements before considering a different suffix.
Frequently Asked Questions
Q1: What is the Yokogawa -H53A4D00 used for?
It acquires 4–20 mA analog signals from field transmitters and provides the process values to a Yokogawa ProSafe-RS safety control system. It supports 16 input channels with module isolation.
Q2: Does the -H53A4D00 support HART communication?
Yes. The -H suffix identifies the HART-capable version. HART communication enables compatible field devices to exchange digital information over the same current loop used for the analog process signal.
Q3: What does the A4D00 suffix mean?
It identifies the dual-redundant pressure clamp terminal block option. The associated terminal board is STA4D-00. Verify the terminal hardware and system configuration before installation.
Q4: Can I hot-swap this module while the ProSafe-RS system is running?
Do not assume that live removal is permitted. Follow Yokogawa’s approved maintenance procedure for the installed safety system, including any redundancy and bypass requirements. Obtain the required process safety authorization before removing an input module.
Q5: Canlace the with a standard -S53?
Not as an equivalent replacement without an engineering review. The standard -S version does not provide the same HART functionality, and its terminal configuration may differ. Confirm the application requirements and approved system configuration.
Q6: Does this module support firmware v3.1?
The module’s HART capability and system compatibility depend on the ProSafe-RS software and hardware release. Check the installed system release, module revision, and applicable Yokogawa compatibility documentation rather than assuming support from a generic firmware version.
Q7: What should I verify before purchasing a replacement?
Check the full model code, HART capability, 16-channel configuration, terminal option /A4D00, STA4D-00 terminal-board compatibility, module condition, and revision. For used stock, request photographs of the actual unit and functional inspection records.
Procurement note: Pay close attention to the distinction between -H53 and -H63, as well as /A4D00 versus other terminal options. The module’s HART function, field connection method, and redundancy arrangement are separate selection criteria. A matching base model alone does not establish interchangeability.
