Yokogawa A2SAM105-H000 S2 Safety Control Module

Configured for safety logic execution in ProSafe-RS Safety Instrumented Systems (SIS), the Yokogawa A2SAM105-H000 S2 (A2SAM105-H000 S2 Safety Control Module) provides direct physical/electrical execution.

Suffix Breakdown & Model Matrix

• A2SAM105-H000 S2: Base part identifier designating the TÜV SIL3 certified dual-redundant safety control module variant.

Hardware Specifications

4-20 mA HART Loop Protocol and Channel Isolation

The A2SAM105-H000 S2 executes safety logic and manages emergency shutdown loops while executing continuous internal self-diagnostics. The 4-20 mA HART loop protocol compatibility allows superimposed digital diagnostic packets and analog variables to traverse safety instrumentation networks without loop attenuation. Channel-to-channel isolation parameters and dual-redundant architecture safeguard internal processing channels against common-mode electrical transients and single-point failures. Cold junction compensation (CJC) and internal thermal regulation maintain strict execution timing and signal conversion accuracy across the operating envelope.

Frequently Asked Questions

Q: What is the safety integrity level certification for this module variant?

A: The module is certified for use up to Safety Integrity Level (SIL) 3 in high-safety applications such as emergency shutdown systems.

Q: Does the architecture support dual-redundant configurations?

A: Yes, the unit incorporates a dual-redundant architecture designed to ensure high availability and robust risk mitigation.

Q: Can this hardware module be extracted or installed while the system rack is energized?

A: System power and safety loop terminals must be fully isolated prior to physical installation or extraction in accordance with strict SIS maintenance procedures.

Field Installation Guidelines

• Ensure that the safety system rack backplane is securely mounted and bonded to the control cabinet earth ground prior to module insertion.
• Verify that the 24 VDC system power supply is stable and de-energized before connecting field wiring or terminal blocks.
• Route safety-critical I/O signal wiring physically away from high-voltage power lines and heavy inductive loads to prevent electromagnetic interference (EMI).
• Maintain proper ventilation clearance around the 224 mm x 24 mm x 150 mm enclosure dimensions to support convective thermal dissipation.