Basic Information
Model: Triconex 2750 (Part Number: 3000270-300)
Product Full Name: 24V Relay External Terminal Module / Isolated Terminal Interface Module
System: Tricon II Series Triple Redundant Safety SIS/ESD Control System
Core Function
Provides on-site cable connection terminals for relay-type digital output modules, enabling wiring transfer between modules in the cabinet and on-site equipment;
Has relay contact electrical isolation function, with a maximum isolation voltage of 2500V, avoiding interference and surge damage to the main control card;
24VDC power supply specification, single-channel isolated channel design, commonly used for safety isolation wiring of switch quantity output circuits.

Core Hardware Parameters
1. Computing and Storage
3 independent 32-bit industrial processors operate in parallel, with hardware triple-out-two (2oo3) voting
Program flash memory: 4MB Flash; Battery-backed RAM: 2MB
Built-in button battery, retains programs, SOE event records, and fault logs when power is lost
Typical logic scan cycle: 1~20ms, suitable for small and medium-sized safety interlock scenarios
2. External Communication Interfaces
2 TriBus redundant backplane buses: for high-speed data interaction with all I/O cards in the rack
2 10/100M adaptive Ethernet ports
Used for downloading programs and online monitoring from the TriStation engineer station
Modbus TCP, TSAA protocol for connecting to DCS, HMI upper-level systems
1 RS232 serial port: for local debugging, SOE event reading, and clock synchronization
Supports SNTP network time synchronization, capable of accurately recording millisecond-level SOE event sequences
3. Electrical and Environmental Specifications
Power supply: Rack backplane 24VDC logic power supply
Power consumption: Approximately 12W
Operating temperature: 0℃ ~ 60℃, industrial wide temperature range, strong EMC electromagnetic compatibility
Installation: Standard slots of Tricon host rack, supports online hot swapping, single-unit failure does not cause shutdown
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