TRICONEX 3500 Series Modules – 3511 Pulse Input Module

Technical Dossier

Product Details And Specifications

TRICONEX 3500 Series Technical Notes

The TRICONEX 3500 Series is a core product line within Schneider Electric's Tricon Safety System (TMR — Triple Modular Redundancy) platform. Deployed across critical global infrastructure including petrochemical refineries, nuclear power facilities, offshore platforms, LNG terminals, and chemical processing plants, the 3500 Series represents one of the most widely installed Safety Instrumented System (SIS) architectures in heavy industry. Its IEC 61511 and IEC 61508 SIL 3-certified architecture makes it the reference standard for Emergency Shutdown (ESD), Burner Management (BMS), and High Integrity Pressure Protection (HIPPS) applications. The 3511 Pulse Input Module is a key I/O component within this ecosystem, designed to accept pulse-type field signals from turbine flow meters, magnetic pickups, and rotating machinery sensors.

3500 Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly deployed modules within the TRICONEX 3500 Series platform. Each module is designed for direct installation into the Tricon TMR chassis backplane.

3511: Pulse Input Module — accepts pulse signals from flow meters and rotating machinery sensors, 24 VDC, 8-channel.
3501: Digital Input Module — 32-channel, 24 VDC discrete input, TMR voting logic.
3503: Digital Input Module — 32-channel, 120 VAC discrete input for high-voltage field devices.
3504: Digital Output Module — 16-channel, 24 VDC solid-state output with diagnostics.
3505: Digital Output Module — 16-channel, 120 VAC relay output for high-voltage actuators.
3508: Analog Input Module — 16-channel, 4–20 mA, HART-compatible, SIL 3 rated.
3509: Analog Input Module — 8-channel thermocouple/RTD input for temperature measurement.
3510: Analog Output Module — 8-channel, 4–20 mA output for control valve positioners.
3513: Pulse Input Module — enhanced version with higher frequency range for turbine metering.
3515: Analog Input Module — 16-channel, high-density 4–20 mA with advanced HART pass-through.
3601: Main Processor Module (MP) — Tricon TMR CPU, executes safety logic at 100 ms scan rate.
3603: Main Processor Module — enhanced MP with expanded memory and faster scan cycle.
3607: Communication Module — supports Modbus RTU/TCP, peer-to-peer Tricon networking.
3625: Tricon Communication Module (TCM) — OPC server, Modbus TCP, and TriStation connectivity.
3700A: Power Supply Module — 24 VDC input, redundant chassis power for TMR backplane.
3721: Chassis Termination Panel — field wiring interface for 3500 Series I/O modules.
3805E: Enhanced Processor Module — next-generation MP with Ethernet-based TriStation support.