Products Description
TRICONEX 3511 Pulse Input Module in stock
TRICONEX 3511 is an 8-channel non-commoned pulse input module for Tricon triple modular redundant (TMR) safety instrumented system. It is specially designed to receive signals from passive magnetic speed pickups, measuring frequency and RPM values of rotating machinery such as turbines and compressors.
This module features independent channel isolation and continuous self-diagnosis, complying with IEC 61508 SIL3 safety standard. It supports hot-swap replacement without system shutdown. It is end-of-life, supplied as surplus or refurbished spare parts for legacy Tricon safety rack maintenance.
Main Specifications
| No. | Item | Parameter |
|---|---|---|
| 1 | Brand | Triconex (Schneider Electric) |
| 2 | Model | 3511 |
| 3 | Module Type | 8-Channel Pulse Input Module (PI) |
| 4 | Input Frequency Range | 20Hz ~ 20kHz |
| 5 | Accuracy | ±0.01% @1kHz~20kHz |
| 6 | Safety Level | SIL3, TMR triple redundant architecture |
| 7 | Operating Temperature | 0℃ ~ +60℃ |
Core Functions
| No. | Function Description |
|---|---|
| 1 | Collect pulse signals from magnetic speed sensors for rotating equipment RPM measurement |
| 2 | High precision frequency counting and time stamping for overspeed monitoring |
| 3 | Built-in channel self-diagnosis to detect wire break, short circuit and signal anomaly |
| 4 | TMR triple voting mechanism to avoid single point failure and guarantee safety function |
| 5 | Hot-swap support for online replacement without shutting down the SIS system |
Application Scenarios
| No. | Application |
|---|---|
| 1 | Power plant steam/gas turbine overspeed safety protection system |
| 2 | Petrochemical compressor, expander and large rotating machinery monitoring |
| 3 | Safety Instrumented System (SIS) for critical process industry |
| 4 | Legacy Tricon SIS rack spare replacement and equipment overhaul project |
| 5 | Oil & gas, chemical plant rotating equipment safety interlock system |
FAQ
| No. | Question & Answer |
|---|---|
| 1 | Q:What is TRICONEX 3511? A:It is an 8-channel pulse input module for Tricon SIS. It receives pulse signals from magnetic speed sensors, calculates rotating speed and sends data to Tricon main controller for overspeed protection of turbines and compressors. |
| 2 | Q:What sensor does 3511 work with? A:It is optimized for passive magnetic pickups (non-amplified speed probes). It detects the magnetic pulse generated by gear teeth to calculate real-time RPM of rotating equipment. |
| 3 | Q:Is TRICONEX 3511 still in production? A:This pulse input module has been discontinued. Available stock is new surplus or refurbished spare parts for maintenance and replacement of existing Tricon SIS safety systems. |
