Technical Specifications Signal Input Type: Quadrature A/B phase differential encoder signal Signal Format: Differential line driver encoder input Function: Shaft speed, position and rotation direction acquisition Backplane Interface: Mark VI system internal backplane bus Operating Power: Supplied via system rack backplane Operating Temperature: ‑30 ℃ to +70 ℃ Storage Temperature: ‑40 ℃ to +85 ℃ Relative Humidity: 5%‑95%, non‑condensing Mechanical Dimension: Standard Mark VI series plug‑in board form factor Certifications: CE, UL power generation industrial component compliance
Functional Features Accepts differential quadrature encoder A/B phase pulse signals for rotation measurement. Calculates real‑time shaft rotating speed, angular position and rotation direction. Built‑in signal filtering suppresses electromagnetic interference for pulse input channels. Transmits computed speed and position data to main controller through backplane bus. Front‑panel status indicators reflect input signal validity and module operating status. 
Application Scenarios Shaft speed and rotor position measurement for gas turbine and steam turbine control system. Rotation feedback acquisition for power generation heavy‑duty rotating machinery. Speed closed‑loop control hardware interface for GE Mark VI turbine control cabinet.
Structural Characteristics Standard plug‑in printed‑circuit board structure compatible with Mark VI rack slot. Front‑edge status indicator assembly for operating and fault condition display. Back‑edge golden‑finger connector for backplane bus communication and power acquisition.
Working Principle Quadrature incremental encoder sends differential A‑phase and B‑phase pulse signals to module input terminals. On‑board hardware circuit captures pulse edge, judges rotation direction according to A/B phase sequence, counts pulse quantity to calculate angular position, and computes real‑time shaft speed based on pulse frequency.
Installation Requirements Insert module into designated slot of GE Mark VI standard control rack. Complete reliable protective grounding for control rack following official power‑plant grounding specification. Field encoder cables adopt shielded differential twisted‑pair cables, separate from high‑voltage power cables.
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