AS S9181AQ-0 · Multi Status Input Card
The ST3*D is identified in legacy automation supply records as a Yokogawa multi-status input card used with CENTUM XL and micro XL control-system installations. Its role is to receive multiple discrete status signals from field contacts and make those states available to the control system.
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FIELD STATUS Discrete equipment and contact states |
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ST3*D INPUT Multi-status signal acquisition |
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DCS MONITORING Status, alarm and logic processing |
It is identified as a legacy Multi Status Input Card for Yokogawa CENTUM XL / micro XL installations.
It is the assembly or model marking associated with the ST3*D card and should be checked against the installed unit.
Secondary records commonly describe 32 isolated status inputs; confirm the exact hardware revision before ordering.
It is used in compatible legacy CENTUM XL or micro XL systems for discrete equipment-state, alarm and permissive monitoring.
No official direct replacement was confirmed. Rack compatibility, field wiring, I/O assignment and control-system configuration must be reviewed.
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