ICS Triplex T3481A high-density protection output module
1、 Basic Product Information
Project parameters
Product model T3481A
Product Name: High Density Guarded Output Module
The full name of the product is Monitored Guarded Output Module
Manufacturer ICS Triplex (now part of Honeywell Process Solutions/Rockwell Automation)
Product Series: AADvance Series/Standard TMR Series
Origin: United States
Product status: Available in stock

2、 Core functional characteristics
1. Main purpose
Function Description
Output signal control is used for digital signal output processing in control system applications
High density output provides high-density protection output function to meet complex control requirements
Line monitoring supports on-site cable open and short circuit fault detection
Redundant operation can be connected in parallel with modules of the same type, providing redundant fault tolerance capability
Automatically test the complete automatic testing function of all output circuits
2. Technical characteristics
Characteristic Description
Triple protection output provides safety critical protection output function
Safety certification complies with IEC 61508 SIL 3 standard and T Ü V certification
High speed signal processing is suitable for applications that require high-speed and reliable signal processing
The communication protocol supports Ethernet Modbus TCP/IP

3、 Technical specifications and parameters
Source of parameter values
16 output channels
Output type: Digital protection output (on/off)
Signal type number (on/off)
Output voltage 24V DC or 120V DC (depending on the specific version)
Rated current 5A/channel
Safety level SIL 3
Working temperature -20 ° C to+70 ° C
Protection level IP20
Size approximately 100mm x 65mm x 35mm
Weight approximately 0.1kg
Isolation voltage 2500Vrms
Response time<1ms
4、 Module indicator light
Indicator light description
Module malfunction/operating status display module malfunction or activity status
Output status indicator displays the status of the output channel
5、 T3481A series model comparison
Model Type Channel Number Description
T3481A high-density protection output 16 channel standard protection output module
T3481 high-density protection output 16 channel T3481A basic version
T3480 Analog Output — Analog Output Module
T7481 Monitoring and Protection Output 16 Channel 7400 Series Version with Similar Functionality
T7481A monitoring protection output 4-channel 7400 series version A
T7488 Monitoring Protection Output 16 Channel 7400 Series Version 8
T3411F Digital Input — Digital Input Module (Same Series)
T3401 Analog Input 16 Channel Analog Input Module (Same Series)
T3420A Analog Input — Analog Input Module (Same Series)
6、 Compatible system module
Module category compatible model
Processor T8110B, T8110C, T8300
Interface adapter T812X series
Communication interface T8151B
Digital I/O T8310, T8403, T8801
Simulate I/O T8431, T8442, T8451, T8461
On site terminals T8830, T8850
T8310 (Trusted Expander Processor)
7、 Application Fields
Industry application scenarios
Oil and gas emergency shutdown system (ESD), fire and gas detection system (F&G)
Chemical Safety Instrumented System (SIS), Process Control
Power plant safety control, turbine control
Application of high reliability control in pharmaceuticals
Key Control Applications for Rail Transit Safety
8、 Installation and maintenance
Project Description
Installation method: Install in the standard I/O rack slot
Hot swappable supports online hot swappable modules
Maintenance cables can be diagnosed using specialized maintenance cables
Configuration tool RSLinx ® Gateway, ControlFLASH program
Important Notice
T3481A is not an input module: T3481A is a high/high-density protection output module, not a digital input module

Input module reference: If you need a digital input module, please refer to the following models:

T3411F: Digital Input Module
T8403: Digital input module
T8310: Digital Input Module
Comparison of output modules:

T3481A: 16 channel high-density protection output
T7481A: 4-channel monitoring and protection output