Configured for signal routing within the N-IO system platform, the YOKOGAWA A2SMX801-S130 (A2SMX801-S130 Pass-through I/O Signal Adaptor) provides direct physical execution of I/O signal mapping. The adaptor serves as a passive interface to connect field instruments and sensors directly to the control system, facilitating data acquisition and control without signal conditioning.

Hardware Specifications

Channel-to-Channel Isolation and Field Connectivity

The A2SMX801-S130 operates as a non-isolated signal interface component. It is engineered to maintain low-impedance paths between field transmitters and the N-IO system backplane. Because this unit lacks active galvanic isolation, it is designed for environments where field devices are either self-isolated or where ground loop currents are managed via external secondary protection measures. The adaptor ensures consistent 4-20 mA HART loop protocol connectivity by providing a continuous transmission path for digital and analog signal overlays.

Frequently Asked Questions

Q: Does this adaptor require external power for operation?

A: No. The A2SMX801-S130 is a passive pass-through device and does not require external power or internal voltage regulation to function.

Q: Can this unit be used as a replacement for isolated signal converters?

A: No. This adaptor provides no galvanic isolation. If the application requires protection against common-mode noise or electrical isolation between the field instrument and the control system, an active signal isolator must be utilized.

Field Installation Guidelines

1. Verify that the N-IO node power is de-energized before installing or replacing the adaptor to prevent accidental short-circuits during terminal engagement.
2. Align the adaptor with the designated N-IO baseplate slot. Ensure the locking mechanism is fully engaged to maintain mechanical stability.
3. Tighten all field wiring terminal screws to ensure firm contact and mitigate resistive heating at the connection point.
4. Route field instrumentation cables away from high-voltage power lines to prevent induced noise in the non-isolated signal paths.
5. Confirm that the field device grounding configuration is compatible with a direct-connected, non-isolated signal architecture to minimize ground loop potential.