TRICONEX 3511 (SIS Pulse Input Module · TMR Triple Modular Redundancy) Brand / Series: TRICONEX (a subsidiary of Schneider Electric), Tricon Safety Control System Model: 3511 Type: 8-channel high-speed pulse input module with TMR triple modular redundancy and SIL 3 safety level. ## I. Basic Parameters Input Channels: 8 isolated independent non-common ground channels Signal Type: Passive / Active pulse, compatible with Magnetic Pickup Unit (MPU) Frequency Range: 1Hz～10kHz (expandable to 20kHz) Pulse Width: 100μs～100ms Resolution / Accuracy: 16-bit; ±0.01% (1kHz～20kHz) Input Voltage / Current: 24V DC, 10mA per channel Isolation Withstand Voltage: 1500V DC between channels; 2500V AC from field to system Operating Temperature: -40℃～+70℃; Storage Temperature: -40℃～+85℃ Power Consumption / Dimensions / Weight: ≤12W; Approx. 146×89×30mm; Approx. 0.7kg Certifications: CE, UL, FM, CSA, ATEX, IECEx (SIL 3) ## II. TMR Redundancy and Diagnosis Triple Modular Architecture: Independent signal acquisition via 3 channels for each signal with 2-out-of-3 (2oo3) voting logic Single-point Fault Tolerance: Failure of any single channel or circuit will not affect system operation On-board Diagnosis: Detection of sensor open circuit, short circuit, over-frequency and abnormal pulse width Real-time self-check of power supply, internal circuits and voting logic Front Panel LED: PASS/FAULT/CHANNEL status indicators Hot Swappable: Supports live replacement without system shutdown ## III. Interface and Wiring Connector: 56-pin, matched with dedicated terminal boards (e.g. 9753-240) TriBus: High-speed redundant communication with Tricon main controllers (3008/3501E)