تریکونکس اینوِنسیس | ساپلای‌پی‌ال‌سی‌اس

Overview

Brand Name:	TRICONEX
Model Number:	3700A
Country of Origin:	USA
Packaging Details:	Original new Factory Sealed
Delivery Time:	Delivery time in stock
Payment Terms:	T/T

Contact for quotation

Sales Manager:	Stella
Send an email:	[email protected]
Contact in Whatsapp:	+86 18159889985

Specifications

Parameter	Specification
Model	3700A
Manufacturer	Triconex (Schneider Electric / Invensys)
Product Type	TMR Analog Input Module
Architecture	Triple Modular Redundant (TMR), 2oo3 voting
Number of Input Points	32, differential, DC-coupled
Input Voltage Range	0–5 VDC (+6% over-range, up to 5.3 VDC)
Input Resistance (load)	30 MΩ (DC), minimum
Power-Off Resistance	30 kΩ (DC), typical
Resolution	12 bits
Accuracy	<0.15% of FSR, from 0°C to 60°C
Input Update Rate	55 ms
Common Mode Rejection	–80 dB (DC–100 Hz), typical
Common Mode Range	–12V to +12V peak
Normal Mode Rejection	–3 dB @ 8Hz; –17 dB @ 60Hz; –23 dB @ 120Hz
Leg-to-Leg Isolation	200 kΩ, typical
Input Overrange Protection	150 VDC / 115 VAC continuous
Current Range	0–20 mA (with external 250 Ω shunt resistor)
Logic Power	<10 W
Color Code	Yellow
Status Indicators	Pass, Fault, Active
Hot-Spare Capability	Yes
Safety Rating	SIL 3 (IEC 61508)
Operating Temperature	0°C to 60°C

Description

The 3700A is a high-density TMR analog input module from Triconex, engineered for the Tricon Safety Instrumented System (SIS) platform. The 3700A provides 32 differential, DC-coupled input channels, converting 0–5 VDC signals into 12-bit digital values for the three Main Processor modules. With a 55 ms update rate and <0.15% FSR accuracy, the 3700A delivers reliable analog signal acquisition for safety-critical applications. The 3700A sustains continuous per-channel diagnostics and supports hot‑spare capability for online module replacement, making it ideal for demanding industrial environments.

Functions

Analog Signal Acquisition – Captures variable voltage signals (0–5 VDC) from 32 field input points and converts them to digital values
TMR Redundant Processing – Three independent input channels process each signal; a mid-value selection algorithm ensures correct data for every scan
Channel Isolation Protection – Sensing is performed to prevent a single failure on one channel from affecting another
Continuous Diagnostics – Per-channel diagnostics detect faults and activate the module Fault indicator and chassis alarm
Hot‑Spare Replacement – Supports online replacement of a faulty module without system shutdown
External Termination Panel Interface – Connects to the Tricon backplane via a separate external termination panel (ETP) with cable interface

Benefits

Fault-Tolerant Operation – TMR architecture with 2-out-of-3 voting ensures the module operates correctly even with up to two faulty channels; a single channel failure does not affect system performance
High Precision Signal Acquisition – 12-bit resolution with <0.15% FSR accuracy over 0°C to 60°C delivers reliable measurements for safety-critical monitoring
Superior Noise Immunity – –80 dB common mode rejection and differential inputs effectively reject electromagnetic interference in harsh industrial environments
Reduced Downtime – Hot-spare capability allows online module replacement, minimizing process interruption
Comprehensive Diagnostic Coverage – Continuous per-channel diagnostics with Pass, Fault, and Active status indicators enable rapid fault identification and maintenance
High Channel Density – 32 inputs per module maximize I/O capacity while minimizing chassis space requirements

Applications

Refinery Emergency Shutdown (ESD) – Monitoring critical analog inputs for reliable trip logic and event logging in fire and gas systems
Chemical Plant Process Control – Temperature monitoring and safety interlocks for reactors and heaters, requiring high accuracy and fast fault detection
Power Generation Turbine Systems – Vibration and pressure sensor feedback for turbine monitoring and safety controller integration
Offshore Gas Platform Safety – Valve position and flow meter analog readings in harsh maritime environments
Oil & Gas Pipeline Monitoring – Continuous process variable monitoring (pressure, flow, level) in safety-critical pipeline applications
Legacy SIS Modernization – Consolidating low-voltage analog points in aging refinery and power plant racks without full chassis rewiring

FAQ

Q1: What is the input voltage range of the 3700A?

A1: The 3700A accepts 0–5 VDC differential inputs with a +6% over-range tolerance (up to 5.3 VDC). It can also interface with 0–20 mA current signals using an external 250 Ω shunt resistor.

Q2: What is the TMR architecture of the 3700A?

A2: The 3700A uses Triple Modular Redundancy (TMR) with three independent input channels per point. A mid-value selection algorithm ensures the correct data is selected from the three channels for every scan. The module can operate properly with as many as two faulty channels.

Q3: How many input channels does the 3700A provide?

A3: The 3700A provides 32 differential, DC-coupled analog input channels in a single module.

Q4: What is the update rate and resolution of the 3700A?

A4: The 3700A offers a full-card scan cycle of ≤55 ms with 12-bit native ADC conversion resolution.

Q5: Does the 3700A support hot-swap replacement?

A5: Yes. The 3700A supports hot-spare capability, allowing online replacement of a faulty module without shutting down the system.

Inquiry Now : [email protected]