Invensys Triconex AI3351 Analog Input Module | Tricon Series 3351 AI Module

Description

Product Overview

• Brand: Invensys Triconex
• Model: AI3351
• Series: Tricon Safety System
• Module Type: Analog Input Module
• The AI3351 reads current signals with high stability.
• It supports accurate process monitoring.
• It fits safety and control systems.

Why Choose This Module

• 32 commoned points save wiring space.
• Fast scan speed improves response.
• High isolation protects logic circuits.
• Force diagnostics support online testing.
• Industrial design ensures long service life.

Signal Performance

• Nominal input: 4–20 mA DC
• Working range: 2–22 mA DC
• Max input current: 50 mA DC
• Input bandwidth: 16 Hz at 3 dB
• Resolution: 12-bit conversion
• Accuracy: 0.15% of full scale

Electrical Characteristics

• Source impedance: 180 Ω
• Input impedance: 250 Ω with baseplate
• I/V resistor: 100 Ω ±0.01%
• Max field voltage: 33 V DC
• Reverse voltage limit: −0.6 V DC

Isolation & Protection

• Field to earth: 500 V DC minimum
• Logic to earth: 800 V DC minimum
• Strong isolation reduces ground faults.
• Design supports noisy plant areas.

Speed & Diagnostics

• Scan time: Less than 1 ms for 32 points
• Diagnostic mode: Force-to-value
• Online testing improves safety checks.
• Faults are easy to locate.

Typical Use Cases

• Pressure and flow transmitters.
• Temperature signal acquisition.
• Chemical process monitoring.
• Oil and gas safety systems.

Installation & Operation

• Install inside Tricon racks.
• Check loop power before wiring.
• Use stable grounding methods.
• No manual calibration required.

Package, Warranty & Shipping

• 1 × Invensys Triconex AI3351 module
• Anti-static industrial packaging
• Warranty: 12 months
• Courier: FedEx, UPS, DHL

Professional FAQ

• Can this module handle loop power changes?
• Yes. It tolerates current variation within its range.
• Is it suitable for slow-changing signals?
• Yes. The bandwidth fits process signals well.
• Does commoned input affect accuracy?
• No. The design keeps channel stability.
• How does FVD help engineers?
• It allows testing without real field signals.
• What field practice improves lifespan?
• Clean wiring and stable earth reduce stress.

Copyright © 2025
PLCDCS HUB Limited.
All rights reserved.
Partner:
Powergear X Automation Limited
Oiltech Controls Limited
Contact:
+86 158 8020 0923