Description
🔹 Product Overview
The Triconex 3805E is a TMR Analog Output Module designed for use in Tricon safety and critical control systems. The module provides eight 4–20 mA analog output channels with a commoned return and DC-coupled architecture.
The module receives output data through the Tricon system’s redundant architecture and is designed to maintain reliable analog signal delivery to field equipment. Typical applications include process control, turbine systems, industrial safety systems, and other installations requiring dependable analog output signals.
Its TMR architecture provides three processing channels for the output function. The module selects a healthy channel to drive the field output while monitoring output performance internally.
🔧 Product Datasheet
🏷️ Brand: Triconex
🔢 Model: 3805E
📋 Product Name: Analog Output Module
🖥️ Series: Tricon Safety System
⚙️ Module Type: TMR Analog Output Module
📡 Number of Output Points: 8
🔌 Output Signal Range: 4–20 mA
📈 Over-Range Capability: Up to 21.2 mA
📊 Output Resolution: 12 bits
🎯 Output Accuracy: Less than 0.25% of full-scale range under specified operating conditions
🔗 Output Configuration: Commoned return, DC-coupled
⚡ Nominal External Loop Power: 24 VDC
🔋 Maximum External Loop Voltage: 42.5 VDC
🛡️ Reverse Voltage Protection: Supported for external loop power
⚙️ Logic Power Consumption: Less than 15 W
⏱️ Switch Time on Channel Failure: 10 ms typical, 20 ms maximum
💡 Status Indicators: PASS, FAULT, ACTIVE, LOAD, PWR1, and PWR2
🎨 Module Identification Color: Pea green
🌡️ Specified Operating Temperature Range: 0°C to 60°C
🏭 Application: Industrial Safety and Critical Process Control
📦 Installation: Tricon chassis with compatible external termination hardware
✨ Condition: New Surplus / Surplus Stock
The 3805E supports eight 4–20 mA outputs, uses 12-bit resolution, and requires external loop power for field output operation.
⚙️ Main Features
• Eight analog current output channels
• Standard 4–20 mA industrial output signals
• Triple Modular Redundant architecture
• 12-bit analog output resolution
• Commoned-return, DC-coupled output design
• Internal output monitoring
• Output loopback circuits for signal verification
• Open-loop detection through the LOAD indicator
• Dual loop power status indication through PWR1 and PWR2
• Suitable for critical industrial automation systems
• Supports online replacement capability when used within a compatible Tricon system configuration
• Designed for connection through compatible external termination hardware
❓ Frequently Asked Questions
🔸 Q1: What is the main function of the Triconex 3805E?
The 3805E converts control data from the Tricon system into analog 4–20 mA output signals for connected field equipment such as actuators, control devices, and process instruments.
🔸 Q2: How many output channels does the 3805E have?
The module provides eight analog output points with a commoned-return configuration.
🔸 Q3: What output signal does the module provide?
The standard output range is 4–20 mA, with an over-range capability extending to approximately 21.2 mA.
🔸 Q4: Does the 3805E require external loop power?
Yes. External loop power is required for the analog output circuits. The nominal external loop power is 24 VDC, with a maximum specified voltage of 42.5 VDC.
🔸 Q5: What does the LOAD indicator mean?
The LOAD indicator can identify an open-loop condition when the module cannot drive current to one or more output circuits.
🔸 Q6: Can the 3805E be replaced with a 3805H?
The 3805H was developed with improved support for increased inductive loads and is described as compatible with applications using the 3805E. However, the existing system configuration and application requirements should always be verified before replacement.
🔸 Q7: Is the 3805E suitable for ordinary PLC analog output applications?
The module is specifically designed for the Tricon architecture. It cannot simply be installed in a standard PLC rack or used as a universal analog output card.
🔸 Q8: What should be checked before installation?
Verify the complete module model, Tricon chassis configuration, external termination hardware, loop power supply, field wiring, output load requirements, and application compatibility before installation.
🔹 Recommended Triconex Models
- Triconex 3805H – TMR Analog Output Module
- Triconex 3806E – High-Current Analog Output Module
- Triconex 3807 – Bipolar Analog Output Module
- Triconex 3700A – Analog Input Module
- Triconex 3704E – High-Density Analog Input Module
- Triconex 3706A – Thermocouple Input Module
- Triconex 3708E – Thermocouple Input Module
- Triconex 3625C1 – Digital Output Module
- Triconex 3623T – Digital Output Module
- Triconex 3008 – Main Processor Module
⚠️ Note: Before purchasing or replacing a Triconex 3805E module, confirm the exact module number, system version, chassis configuration, external termination interface, loop power requirements, and field wiring arrangement. This is especially important in safety-critical and continuous-process applications.
