Feature & PrincipleSimplex relay terminal board for GE Mark VIeS Speedtronic turbine control system. It receives command signal from YDOA I/O pack, drives built‑in Form‑C relay contacts to switch field actuators, monitors feedback status and executes emergency shutdown, smoke vent and auxiliary equipment interlock logic.

SpecificationsModel: IS410SRLYS2ABrand: GESeries: Mark VIeS SpeedtronicChannels: 12 × Form‑C CO contactContact Rating: 5A @250V ACControl Supply: 24V DCCompatible I/O Pack: IS420YDOAS1BTerminals: 48-pin screw terminalMounting: Backplane slotCertification: CE, UL

Components & DiagnosticsOnboard relay group, signal conditioning circuit, backplane bus connector, status LED and feedback detection circuit. Common faults: relay contact adhesion, feedback signal missing, bus scan failure, coil burnout.

Product BriefIS410SRLYS2A terminal board, GE Mark VIeS turbine safety interlock spare widely used for thermal power plant gas turbine, steam turbine emergency shutdown and smoke exhaust fan control system.