Description
Woodward 5501‑372 REV‑B
Technical Specifications: System‑compatibility:‑Woodward‑MicroNet‑triplex‑redundant‑control‑platform‑Vertex‑Pro‑chassis; power‑supply:‑24 VDC‑nominal,‑operating‑range‑18‑32 VDC; multi‑channel‑redundant‑analog‑input‑and‑analog‑output‑channels; supports‑triplex‑voting‑mechanism‑for‑analog‑measurement‑values; communicates‑with‑MicroNet‑triplex‑main‑controller‑via‑chassis‑backplane‑bus; operating‑temperature:‑‑40 °C‑+70 °C; storage‑temperature:‑‑40 °C‑+85 °C; relative‑humidity:‑5‑95 %RH non‑condensing; rack‑slot‑installation‑for‑Vertex‑Pro‑chassis; weight:‑0.82 kg; front‑panel‑multi‑color‑LED‑indicators‑for‑module‑power‑status,‑redundant‑channel‑health‑status‑and‑fault‑alarm‑events.
Functional Features: Triplex‑redundant‑hardware‑architecture‑realizes‑fault‑tolerant‑analog‑I/O‑operation‑for‑safety‑critical‑turbine‑control‑loops; multi‑channel‑analog‑signal‑acquisition‑for‑turbine‑process‑and‑speed‑sensors; analog‑output‑channels‑deliver‑redundant‑control‑signals‑to‑turbine‑actuators‑and‑valve‑positioners; hardware‑supported‑signal‑voting‑logic‑processes‑measurement‑data‑from‑three‑redundant‑signal‑paths; comprehensive‑per‑channel‑hardware‑self‑diagnosis‑detects‑internal‑component‑failure,‑field‑loop‑open‑wire‑and‑short‑circuit‑fault‑conditions; front‑panel‑LED‑group‑delivers‑direct‑visual‑redundancy‑health‑status‑and‑fault‑indication; REV‑B‑hardware‑revision‑optimizes‑circuit‑stability‑for‑triplex‑system‑long‑term‑continuous‑operation.
Application Scenarios: Critical‑gas‑turbine‑and‑steam‑turbine‑triplex‑governor‑control‑systems‑in‑power‑plants; offshore‑oil‑gas‑platform‑turbomachinery‑high‑availability‑control‑cabinets; petrochemical‑plant‑critical‑compressor‑safety‑control‑systems; Woodward‑MicroNet‑triplex‑system‑maintenance‑and‑spare‑part‑replacement‑projects.
Performance Parameters: Triplex‑signal‑voting‑logic‑executes‑with‑deterministic‑timing‑without‑introducing‑excessive‑control‑loop‑delay; analog‑measurement‑and‑output‑precision‑meets‑turbine‑safety‑control‑system‑requirements; vibration‑and‑shock‑resistance‑satisfies‑power‑generation‑industry‑control‑hardware‑standards; supports‑24‑7‑year‑round‑continuous‑operation‑inside‑industrial‑control‑cabinets‑within‑rated‑environmental‑range.
Material Composition: Black‑flame‑retardant‑engineering‑plastic‑rack‑module‑housing; FR‑4‑high‑reliability‑multi‑layer‑glass‑fiber‑printed‑circuit‑board; three‑sets‑of‑redundant‑analog‑signal‑processing‑circuit‑groups; high‑precision‑A/D‑and‑D/A‑conversion‑integrated‑circuits; gold‑plated‑backplane‑edge‑connector‑contacts; multi‑color‑SMD‑LED‑status‑indicators; metal‑mechanical‑locking‑latches‑for‑rack‑slot‑mechanical‑fixation.
Structural Features: Standard‑Vertex‑Pro‑chassis‑rack‑slot‑mechanical‑dimension; rear‑side‑gold‑plated‑edge‑connector‑interfaces‑with‑MicroNet‑triplex‑chassis‑backplane‑bus; front‑panel‑arranges‑redundancy‑health‑status‑and‑fault‑LED‑indicator‑bank; side‑metal‑locking‑latches‑fasten‑module‑securely‑into‑chassis‑I/O‑slot‑position; all‑field‑sensor‑and‑actuator‑wiring‑connects‑externally‑through‑matched‑terminal‑block‑assembly.
Working Principle: After‑24 VDC‑power‑on‑of‑5501‑372‑REV‑B‑module,‑three‑groups‑of‑internal‑redundant‑circuit‑units‑complete‑respective‑hardware‑initialization‑and‑self‑diagnosis‑procedures. Field‑sensor‑analog‑input‑signals‑enter‑three‑redundant‑signal‑processing‑paths‑simultaneously. Each‑redundant‑path‑completes‑signal‑conditioning‑and‑analog‑to‑digital‑conversion‑independently. Internal‑hardware‑voting‑logic‑compares‑three‑groups‑of‑digital‑measurement‑data,‑filters‑out‑abnormal‑deviant‑values‑and‑outputs‑valid‑voted‑measurement‑result‑to‑MicroNet‑triplex‑main‑controller‑through‑backplane‑bus. Main‑controller‑sends‑triplex‑calculated‑output‑set‑point‑commands‑back‑to‑5501‑372‑REV‑B‑module. Three‑redundant‑output‑circuit‑groups‑convert‑digital‑commands‑into‑analog‑output‑signals‑to‑drive‑field‑turbine‑actuators. On‑board‑diagnostic‑circuits‑monitor‑health‑state‑of‑each‑redundant‑channel‑and‑field‑loop‑condition‑continuously. When‑single‑redundant‑channel‑failure‑occurs,‑system‑maintains‑normal‑operation‑via‑remaining‑healthy‑channels,‑diagnostic‑fault‑flags‑transmit‑to‑main‑controller‑and‑corresponding‑front‑panel‑LED‑indicators‑illuminate‑to‑report‑fault‑event.
