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The relay channels provide 1780 Vrms AC isolation for 1 minute between channels
also cataloged as the B30 Ethernet network TCP/IP module
Tighten terminal block connections according to approved maintenance procedures and inspect periodically for loosened conductors
temporary communication suspension occurs
The module architecture supports Hot-Swapping (PnP)
Yokogawa ALR121-S01 Serial Communication Module Yokogawa CENTUM The relay channels provide 1780Yokogawa ALR121 S01 Serial Communication Module Configured for subsystem data exchange in CENTUM CS 3000 and CENTUM VP platforms, the Yokogawa ALR121 S01 (base model ALR121) provides direct electrical interfacing between the DCS and external serial devices using RS 422 RS 485 physical layers. The module executes deterministic half duplex transmission without protocol translation overhead. Hardware Specifications Parameter Specification Brand Yokogawa
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