Product Overview

The Triconex 3482 is a high-current analog output module for safety systems. This module uses Triple Modular Redundant (TMR) architecture for fault tolerance. The Triconex 3482 provides four commoned-return points with DC coupling. Points 3 and 4 support a 4-40 mA controlled output range. Each output can reach 0-44 mA for over-range needs. The module includes a step function for outputs below 4 mA. You must use the Triconex 3482 with the Model 2481 Analog Output Baseplate only. This pairing ensures proper mechanical and electrical fit.

Technical Specifications

The Triconex 3482 delivers precise current control for demanding applications. Below are the detailed technical parameters.

General Features

• Points: 4, commoned-return, DC-coupled

• Isolated Points: None

• Type: TMR (Triple Modular Redundant)

• Resolution: 12 bits

• Diagnostic: Forced-switch diagnostic (FSD)

Output Current Range (Points 3 and 4)

• 4-40 mA output, controlled

• 0-44 mA over-range

• 0 mA output capability with step function below 4 mA

Output Accuracy (Points 3 and 4)

• Less than 0.25% of FSR (4-40 mA range)

• Full scale is 0-44 mA

• Valid from 32°F to 122°F (0°C to 50°C)

External Loop Power

• 32 VDC maximum

• 24 VDC nominal

• Reverse voltage-protected for safety

Output Loop Power Requirements (Points 3 and 4)

• 125Ω load needs more than 16 VDC (1 A minimum)

• 210Ω load needs more than 20 VDC (1 A minimum)

• 295Ω load needs more than 24 VDC (1 A minimum)

• 340Ω load needs more than 28 VDC (1 A minimum)

Protection and Switching

• Over-range protection: 36 VDC continuous, 0 VDC continuous

• Switch time on leg failure: 1 ms typical, 3 ms maximum

Installation Guide

Follow these steps to install the Triconex 3482 correctly.

1. De-energize the system before handling the module.

2. Mount the Model 2481 Analog Output Baseplate in your chassis.

3. Slide the Triconex 3482 into the designated baseplate slot.

4. Secure the module with the locking screws at top and bottom.

5. Connect external loop power between 24 VDC nominal and 32 VDC max.

6. Wire field devices to the commoned-return terminals.

7. Verify that the load resistance matches your loop voltage.

8. Use twisted-pair shielded cable for all analog outputs.

9. Perform a forced-switch diagnostic test after installation.

10. Test each output from 4 mA to 40 mA before system startup.

Package List

• 1 x Triconex 3482 high-current analog output module

• 1 x Keying kit for correct baseplate alignment

• 1 x Module label with serial number for tracking

• 2 x Locking screws for vibration resistance

Frequently Asked Questions (FAQ)

1. Can I use the Triconex 3482 with any baseplate?
No, the Triconex 3482 only works with the Model 2481 Analog Output Baseplate. Other baseplates cause mechanical and electrical issues.

2. What happens if one leg fails in the TMR architecture?
The Triconex 3482 switches to the healthy leg within 3 ms maximum. This fast switch time keeps your process safe and running.

3. Why does my output not reach 40 mA at low loop voltage?
The Triconex 3482 needs sufficient loop voltage for high loads. A 340Ω load requires more than 28 VDC to reach full range.

4. Is the 0-44 mA over-range safe for continuous use?
Yes, the Triconex 3482 handles 0-44 mA continuously without damage. The module includes 36 VDC over-range protection for extra safety.

5. How does forced-switch diagnostic (FSD) work on this module?
FSD on the Triconex 3482 tests each output switch internally. The diagnostic finds stuck or failed switches before they cause a trip.