Yokogawa A2SAM105-H000 S2 Signal Conditioning Adaptor
Configured for signal conditioning and HART communication within Yokogawa N-IO field units, the Yokogawa A2SAM105-H000 S2 (A2SAM105-H000 S2 Current / Voltage Input Signal Adaptor) provides direct physical/electrical execution. It handles dual-mode inputs across 4-20 mA current loops and 0-10 V DC voltage signals, supporting smart instrumentation and remote diagnostics across DCS platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | A2SAM105-H000 S2 |
| Brand | Yokogawa |
| Origin | Standard Industrial Manufacturing |
| Weight | Standard N-IO Module Weight |
| Dimensions | Standard N-IO Adaptor Form Factor |
| Operating Temp | Standard Industrial Cabinet Range |
| Power Consumption | Powered via Field Unit Backplane |
| Signal Support | Dual-mode: Voltage or Current |
| Voltage Input Range | 0-10 V DC (Allowable up to 30 V DC) |
| Current Input Range | 4-20 mA DC (Allowable up to 25 mA DC) |
| Digital Communication | HART Protocol (-H suffix) |
| Input Resistance (Voltage) | 1 MOhm (Power-on); >=100 kOhm (Power-off) |
4-20 mA HART Loop Protocol and CJC Loop Integration
The adaptor integrates HART protocol communication (-H suffix) for simultaneous process variable monitoring and digital field device configuration. Galvanic isolation and high-impedance circuitry (>=100 kOhm during power-off) prevent signal distortion and loop loading in redundant configurations. Internal transmitter power supplies deliver 15.0 to 24.0 V DC directly to connected 2-wire field instruments while supporting precise analog conversion.
Frequently Asked Questions
Q: How does the Style 2 (S2) revision protect redundant loops during power-off conditions?
A: The Style 2 circuitry maintains a high input impedance of >=100 kOhm when powered off, preventing parasitic current draw and signal loading across shared redundant control loops.
Q: What are the wiring constraints when connecting 4-wire transmitters to this adaptor?
A: 4-wire transmitters utilize external power sources and must connect directly to the signal input pins while bypassing the internal 24 V transmitter supply terminals to avoid back-feeding voltage.
Field Installation Guidelines
- Secure the adaptor onto the designated Yokogawa N-IO node base, ensuring alignment pins engage completely prior to locking the module latch.
- Terminate 4-20 mA current and 0-10 V voltage signal wires using shielded twisted pairs, grounding the cable shield at a single cabinet earth point to suppress electromagnetic noise.
- Maintain adequate vertical spacing inside marshalling cabinets to allow thermal dissipation across high-density I/O arrays.
Yokogawa A2SAM105-H000 S2 Signal Conditioning Adaptor
Yokogawa A2SAM105-H000 S2 Signal Conditioning Adaptor
Configured for signal conditioning and HART communication within Yokogawa N-IO field units, the Yokogawa A2SAM105-H000 S2 (A2SAM105-H000 S2 Current / Voltage Input Signal Adaptor) provides direct physical/electrical execution. It handles dual-mode inputs across 4-20 mA current loops and 0-10 V DC voltage signals, supporting smart instrumentation and remote diagnostics across DCS platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | A2SAM105-H000 S2 |
| Brand | Yokogawa |
| Origin | Standard Industrial Manufacturing |
| Weight | Standard N-IO Module Weight |
| Dimensions | Standard N-IO Adaptor Form Factor |
| Operating Temp | Standard Industrial Cabinet Range |
| Power Consumption | Powered via Field Unit Backplane |
| Signal Support | Dual-mode: Voltage or Current |
| Voltage Input Range | 0-10 V DC (Allowable up to 30 V DC) |
| Current Input Range | 4-20 mA DC (Allowable up to 25 mA DC) |
| Digital Communication | HART Protocol (-H suffix) |
| Input Resistance (Voltage) | 1 MOhm (Power-on); >=100 kOhm (Power-off) |
4-20 mA HART Loop Protocol and CJC Loop Integration
The adaptor integrates HART protocol communication (-H suffix) for simultaneous process variable monitoring and digital field device configuration. Galvanic isolation and high-impedance circuitry (>=100 kOhm during power-off) prevent signal distortion and loop loading in redundant configurations. Internal transmitter power supplies deliver 15.0 to 24.0 V DC directly to connected 2-wire field instruments while supporting precise analog conversion.
Frequently Asked Questions
Q: How does the Style 2 (S2) revision protect redundant loops during power-off conditions?
A: The Style 2 circuitry maintains a high input impedance of >=100 kOhm when powered off, preventing parasitic current draw and signal loading across shared redundant control loops.
Q: What are the wiring constraints when connecting 4-wire transmitters to this adaptor?
A: 4-wire transmitters utilize external power sources and must connect directly to the signal input pins while bypassing the internal 24 V transmitter supply terminals to avoid back-feeding voltage.
Field Installation Guidelines
- Secure the adaptor onto the designated Yokogawa N-IO node base, ensuring alignment pins engage completely prior to locking the module latch.
- Terminate 4-20 mA current and 0-10 V voltage signal wires using shielded twisted pairs, grounding the cable shield at a single cabinet earth point to suppress electromagnetic noise.
- Maintain adequate vertical spacing inside marshalling cabinets to allow thermal dissipation across high-density I/O arrays.
