T3401 ICS Triplex Regent Series Datasheet & Technical Manual

Regent 24Vdc Digital Input Module 40-Channel | ICS Triplex T3401

Regent 24Vdc Digital Input Module 40-Channel | ICS Triplex T3401

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Rockwell ICS Triplex T3401 Regent Series Digital Input Module The Rockwell Automation T3401, also cataloged as the ICS Triplex T3401...

SKU: T3401

Manufacturer: ICS Triplex
Product No.: T3401
Product Type: Digital Input Modules
Product Origin: USA
Payment:T/T, Western Union
Weight: 1260g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Rockwell ICS Triplex T3401 Regent Series Digital Input Module

The Rockwell Automation T3401, also cataloged as the ICS Triplex T3401 Digital Input Module, operates as a dedicated hardware component for fault-tolerant field switch sensing within Regent and Trusted safety instrumented platforms.

Hardware Specifications

Parameter	Specification
Model	T3401
Brand	ICS Triplex (Rockwell Automation)
Origin	United States
Weight	1.26 kg
Dimensions	3.1 cm x 30.2 cm x 26.5 cm
Operating Temp	-20 deg C to +60 deg C
Power Consumption	7 mA per channel (nominal)
Channel Count	40 isolated inputs
Input Voltage Range	24 VDC nominal (18 to 30 VDC)
Isolation	2500 V between field wiring and logic circuits
Architecture	Triple Modular Redundant (TMR), 3-2-0 fault tolerant

Triple Modular Redundancy & SIS Execution

The module operates via Hardware Implemented Fault Tolerant (HIFT) architecture, utilizing a tripled I/O security bus interface to guarantee that no internal hardware failure disrupts system operation. The subsystem handles 24 VDC nominal inputs across 40 channels, incorporating dedicated test regimes that isolate faults without generating nuisance alarms. Internal circuitry continuously validates loop integrity, executing real-time diagnostics to pinpoint open circuits, short circuits, and stuck-on or stuck-off states. Triple-module parallel wiring enables automated 2oo3 voting structures, enforcing the predefined fail-safe state required for IEC 61508 SIL 3 certification.

Frequently Asked Questions

Q: Can the T3401 module be replaced while the safety system is actively executing logic? A: Yes. The module supports hot replacement capabilities. A faulty unit can be extracted and swapped within a triple-module parallel configuration without disrupting the active input loop signals or dropping system safety visibility.

Q: How does the channel-to-channel isolation architecture protect the logic backplane? A: Physical galvanic isolation rated at 2500 V isolates the field-side wiring loops from the internal processing logic. This structural separation prevents high-voltage surges, ground loops, and electrical cross-talk from migrating to adjacent modules or the main processor chassis.

Field Installation Guidelines

Chassis Grounding: Connect the DIN-rail or chassis frame directly to the master plant instrument ground using a low-impedance copper conductor. Ensure the ground path maintains less than 1 Ohm resistance to prevent common-mode voltage drift.
Field Wiring Separation: Route all 24 VDC digital input signal lines through dedicated, segregated wire ways. Maintain a minimum clearance of 30 cm from high-voltage AC power cabling or heavy inductive loads to prevent electromagnetic coupling.
Shield Termination: Terminate field cable shields at the designated chassis grounding bar only. Do not ground the shield at both ends to avoid creating inductive ground loops.
Thermal Management: Maintain unhindered vertical ventilation spacing above and below the module rack. Verify ambient enclosure temperatures remain within the -20 deg C to +60 deg C operational threshold.

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