Configured for high-density signal acquisition in CENTUM VP N-I/O architectures, the YOKOGAWA A2SAM105-H000 S2 (A2SAM105-H000 S2 Analog Input Adapter) provides direct electrical execution of current and voltage signal conversion. The module facilitates the integration of 4-20 mA and 1-5 VDC field signals into the control system, utilizing HART7 protocol support for bidirectional digital communication over the analog loop.

Suffix Breakdown & Model Matrix

• A2SAM105: Base model designation for the multi-range analog input adapter.
• -H000: Standard hardware revision with native HART7 protocol capability.
• S2: Specific packaging and environmental hardening code for N-I/O baseboard compatibility.

Hardware Specifications

Triple Modular Redundancy (TMR) and Safety Integrity

The A2SAM105-H000 S2 is engineered for integration into high-availability systems, supporting TMR (Triple Modular Redundancy) configurations to ensure continuous operation despite individual component failure. The module utilizes internal galvanic isolation and comprehensive self-diagnostics to meet SIL 3 requirements, detecting signal discrepancies or hardware faults in real-time. By supporting the HART7 protocol, the adapter maintains transparency for digital diagnostics, allowing for continuous health monitoring of connected field transmitters without disrupting the primary analog control loop.

Frequently Asked Questions

Q: Can this module be used in a TMR configuration with existing analog input modules?

A: TMR compatibility requires that the specific N-I/O baseboard and associated software logic be configured to handle voting logic; ensure the base unit supports the tripartite architecture before deployment.

Q: Are the channels isolated from each other?

A: The module provides channel-to-system isolation essential for process safety; refer to the specific N-I/O baseboard datasheet for channel-to-channel isolation specifications in multi-channel hazardous area applications.

Field Installation Guidelines

1. Verify that the N-I/O base unit is de-energized prior to seating the A2SAM105-H000 S2 module to prevent surge currents during connector engagement.
2. Ensure the module locking pins are fully engaged with the N-I/O baseboard to maintain mechanical stability and electrical ground contact.
3. Configure the channel input type (current or voltage) via the engineering station software before energizing the field loops.
4. Route field instrumentation cables away from high-voltage transients or heavy motor loads; utilize shielded twisted-pair wiring to maintain HART signal integrity.
5. Perform an initial system loop check to verify HART communication status and signal accuracy against a calibrated reference source.