1C31xxx = Ovation remote I/O module series;234 = 16-channel compact contact DI hardware code;G01 = hardware revision version。

Backplane power supply: internal rack bus powered;On-board auxiliary field power: 42~55VDC for contact loop feed;Channel quantity: 16 isolated dry contact input channels;Per-channel closed-loop current: 4~8mA;Contact bounce filtering: fixed anti-chatter >3ms bounce rejection, maximum signal delay ≤7ms;Isolation: field circuit vs backplane isolation 500VDC;Operating ambient: -40℃ ~ +70℃, 5%~90%RH non-condensing;Dimension: 121H×52W×166D mm, net weight approx 0.45kg;Hot-swap supported on standard Ovation I/O rack。

Rear golden finger connector plugs into Ovation rack backplane for system bus data communication;Front terminal block terminals connect field limit switch, relay dry contact wiring;Front panel LED indicators for RUN status, module fault and per-channel input state。

Dry contact on/off status acquisition for interlock and sequence control;Built-in hardware contact bounce suppression to avoid false trigger from mechanical switch chatter;Per-channel independent fault diagnosis for open circuit, abnormal loop; single channel failure will not affect other 15 channels;Hot plug replacement without shutting down the whole rack during maintenance。

Thermal power plant boiler FSSS interlock DI cabinet, steam turbine auxiliary system switch signal collection, petrochemical refining Ovation DCS remote I/O cabinet spare replacement and system capacity expansion。

Field signal cable uses shielded twisted pair with single-end grounding inside control cabinet;Keep DI wiring separated from high-power AC power cable to reduce EMI interference;Check terminal fastening and channel status indication periodically during routine maintenance。