TRICONEX 3301 Digital Input Module
1、 Basic Product Information
Source of project parameters
Product model 3301/DI3301
Product Name: Digital Input Module
Product Series: TriconeX Trident Safety System/Tritech Series
Product Type: Digital Input Module
Manufacturer Triconex (now part of Schneider Electric)
Origin: United States
Important note: Some sources also refer to it as an «input-output module», but its main function is digital input

2、 Core functional characteristics
Source of Function Description
Digital signal acquisition and reception of digital signals from on-site equipment (such as switch status, alarm contacts, etc.)
TMR Triple Redundancy adopts a Triple Modular Redundancy (TMR) architecture to ensure high availability
Signal conversion converts on-site digital signals into signals that can be processed by the Triconex system
The self diagnostic function has a complete channel diagnostic function and triggers an alarm when a fault occurs
Hot plug support supports hot replacement, and the system can still operate normally even in the event of a single failure
Microsecond level response with fast response time, ensuring real-time control
3、 Technical specifications and parameters
Source of parameter values
Number of channels: 32 digital input channels
Input voltage 24V DC
Working voltage range 15-30 VDC
Input impedance 2.2 k Ω/greater than 30 k Ω
Input type: dry contact, voltage signal
Signal type: normally open, normally closed, pulse, etc
Trigger mode edge trigger, level trigger, pulse trigger
Response time<10 ms/microsecond level
Maximum output current 2A
Working temperature -40 ° C to+70 ° C/+85 ° C
Protection level IP65/IP67/IP20
Module size 233 mm × 168 mm × 85 mm/100mm × 50mm × 25mm
The module weighs approximately 2.5 kg
Input power 0.2-0.5 W/point
4、 Security certification
Certification Explanation Source
IEC 61508 complies with functional safety standards
IEC 61511 complies with SIS process safety standards
SIL 3 supports SIL3 level applications
TMR architecture triple redundant fault-tolerant design
5、 Module indicator light
Source of indicator light description
If a channel fault is detected, the fault indicator light will light up and trigger an alarm
The power indicator light displays the power status
Running status indicator displays the running status of the module
6、 TRICONEX 3301 series model comparison
Model Type Channel Number Explanation Source
3301/DI3301 Digital Input 32 Channel Standard Digital Input Module
3302 Digital Output — Digital Output Module (Same Series)
3501 Analog Input 8-Channel Analog Input Module
3503 Analog Output 16 Channel Analog Output Module
18030042035 digital I/O 32 channel digital input/output combination module
TRICONEX 4000093-310 I/O Module — Input/Output Module
7、 Compatible system module
Module category compatible model
Main processor TRISTATION 1131/Triton processor
Bottom board/terminal 2301 type bottom board, DI external terminal board
Communication module Triconex communication interface module
Power module Triconex power module
Cabinet standard NEMA encapsulated cabinet
8、 Application Fields
Source of Industry Application Scenarios
Petrochemical safety interlock system, process control
Power Plant Safety Control System
Natural gas, oil and gas transportation and processing
Process Control in Metallurgical Industry
Safety Control in Nuclear Power and Industry
Pharmaceutical process monitoring
Railway/aviation safety critical applications
9、 Installation and Configuration
Project Description
Installation method: Install on standard base plate/terminal board
Mechanical key control adopts mechanical key control design to prevent installation errors
Hot swapping supports hot replacement, and a single fault does not affect system operation
Configure software TRISTATION 1131 triple redundant control system
Important Notice
Model confirmation: 3301 is a digital input module (DI3301) with 32 digital input channels

Partial information sources: Some sources are also known as «input-output modules», but their main function is digital input

System compatibility: To be used in conjunction with the TRICONEX Trident security system/Triton processor

Safety certification: Complies with IEC 61508/61511 standards and supports SIL 3 applications

Manufacturer change: TRICONEX is now owned by Schneider Electric and it is recommended to purchase through official channels

Price reference: The revised version costs approximately US $2250.00 (approximately ¥ 16283.70)

Supporting components: It is recommended to use with 2301 type base plate and DI external terminal base plate