Emerson PACSystems RX3i I/O Module

3. Diagnostic and monitoring capabilities

Advanced diagnostic function: The module is equipped with a comprehensive self diagnostic mechanism, which can monitor the terminal wiring status, signal abnormalities (such as overcurrent and over range), module faults in real time, and display alarm information through the controller or upper computer (such as Emerson Proficy software) to quickly locate the problem;

Status visualization: The module LED indicator lights provide clear feedback on power, communication, and channel fault status, making it easy for on-site maintenance personnel to quickly troubleshoot.

I/O module classification and typical models

1. Digital I/O module

Module type, typical model, key parameters

Digital input IC694MDL645 24Vdc, 16 points, positive and negative logic, isolated

IC694MDL240 120Vac， 16:00, non isolated

Digital output IC694MDL730 12/24VDC, 2A, 8 points, positive logic

IC694MDL930 relay output (normally open), 4A, 8 points, isolated

Mixed digital I/O IC694MDR390 24Vdc input (8 points)+relay output (8 points), integrated input-output function

2. Analog I/O module

Module type, typical model, key parameters

Analog input IC695ALG600 universal type, supports voltage/current/RTD/thermocouple, 8-channel non isolated/4-channel differential

IC695ALG306 isolated thermocouple input, 6-channel, compatible with various thermocouple types such as J/K/T

Analog output IC694ALG392 8-channel, supports voltage/current output, non isolated

IC695ALG728 8-channel, voltage/current output, supports HART protocol, can communicate with smart instruments

Mixed analog I/O IC694ALG442 with 4 analog inputs and 2 analog outputs, supporting voltage/current signals

3. Special and Interface Modules

Module type, typical model, key parameters

High speed counter IC695HSC304 1.5MHz, 8 inputs, 7 outputs, supports quadrature encoding, pulse counting, etc

IC694DSM324 multi axis motion controller, compatible with servo/stepper motor control, supports point and trajectory planning

Communication module IC695PNC001 PROFINET controller module, realizing PROFINET network management and device docking

IC695CMM004 4-port serial communication module, supporting RS232/485, compatible with Modbus/RTU and other protocols

Power module IC695PSA040 120/240VAC input, 125Vdc output, 40W, providing stable power supply for the main backplane

IC695PSD140 24Vdc input, 40W multi-purpose power supply, suitable for DC power supply scenarios

Comparison with other Emerson I/O products

The positioning differences between RX3i I/O and other Emerson I/O series can be clearly distinguished through the following table for easy selection:

Product Series Types Core Features Typical Application Scenarios Environmental Adaptability

PACSystems RX3i Chassis Based high performance, high diagnostic capability, support for redundant complex machine control, process control, motion control 0~60 ℃ (optional -40 ℃ wide temperature)

RSTi EP distributed slice miniaturization, decentralized deployment single machine control, lightweight process control -20~60 ℃, IP20

VersaPoint distributed slicing function safety certification (SIL3) safety related controls (such as emergency stop, safety interlock) -20~55 ℃, IP20

RSTi OM on machine distributed (On machine) high protection (IP67), cabinet free installation robots, mobile devices and other non control cabinet scenarios -20~60 ℃, IP67

PAC8000 intrinsic safety explosion-proof certification (ATEX Zone 1) for hazardous environments (such as chemical and oil and gas sites) -40~70 ℃, IP20

Order information and attachments

1. Core component models (some key models)

Component category and model description

Power module IC695PSA040 120/240Vac/125VDC input, 40W, main power supply

IC695PSD140 24Vdc input, 40W multi-purpose power supply

IC694PWR321 120/240Vac/125VDC input, 30W, serial expansion power supply

Backboard IC695CHS007 7-slot universal backplate

IC695CHS016 16 slot universal backplate

IC694CHS392 10 slot serial expansion backplane

Digital input IC694MDL645 24Vdc, 16 points, positive and negative logic, isolated

Digital output IC694MDL730 12/24VDC, 2A, 8 points, positive logic

Analog input IC695ALG600 universal type, 8-channel non isolated/4-channel differential, supports RTD/TC/voltage/current

Analog output IC694ALG392 8-channel, voltage/current output

Note: The meaning of the model suffix is: LT=low temperature version (supported at -40 ℃), CA=normal coating version (moisture-proof/corrosion-resistant), some modules do not support suffix extension.

2. Common attachments

Terminals and labels: IC694ACC311 (20 terminal blocks, 6 pieces/pack), IC694ACC003 (module door label);

Diagnosis and testing: IC694ACC300 (DC voltage input simulator), IC695ACC600 (cold junction compensation kit, compatible with IC695ALG600 module);

Upgrade accessories: IC695ACC651 (Series 90-70 to RX3i I/O adapter card), IC695ACC652 (5-slot conversion rack);

Spare parts: IC695ACC002 (plastic casing for CPU/AC power backup), IC695ACC302 (auxiliary intelligent battery module).