Core parameters

Number of channels: 16 analog input (AI)

Signal type: 4-20mA DC (default) / 1-5V DC (configurable)

Resolution: 16 bits (0.0015% accuracy)

Input impedance: 250Ω (4-20mA)

Isolation: Channel-to-channel isolation, group isolation, system isolation, 500Vrms

Diagnosis: Open circuit / short circuit detection, overrange, signal drift, power supply failure

Bus interface: Tricon triple redundancy (TMR) system bus

Operating voltage: 24VDC (18–30VDC)

Power consumption: Approximately 6W

Operating temperature: -40°C ~ +70°C

Certifications: SIL3 (IEC 61508), CE, UL, FM, ATEX

Installation: Tricon host slot (standard 19" rack)

Weight: Approximately 1.8kg

Features

TMR triple redundancy architecture: Three-channel independent sampling voting, no single point failure, SIL3 safety level

16-channel high-density AI: One module collects 16 points of analog quantities, saves slots and reduces costs

4-20mA industrial standard: Directly compatible with pressure, level, temperature, flow, etc., two-wire transmitters

High precision + strong isolation: 16-bit resolution, channel-to-channel isolation, strong anti-interference, stable measurement

Complete fault diagnosis: Real-time detection of open circuit, short circuit, overrange, supports hot swapping, online replacement

Typical applications

ESD emergency stop system: Monitoring of critical process parameters (pressure, temperature, level), over-limit interlock

F&G fire protection system: 4-20mA signal collection of combustible gas, toxic gas concentration

BMS boiler management system: Analog monitoring of steam pressure, furnace temperature, water level

SIL3 safety circuit: Simulated quantity safety monitoring in high-risk scenarios such as chemical, oil and gas, and power industries

Reference of the same series

0905-148-6921: 16-channel AI (4-20mA, this model)

3510: 8-channel pulse / frequency input

3504E: 32-channel 24VDC DI

3625: 16-channel DO relay output