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Overview

Brand Name:	TRICONEX
Model Number:	3664
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	3664
Manufacturer	Triconex (Schneider Electric / Emerson)
Product Type	High-Density Digital Output Module
Architecture	Triple Modular Redundant (TMR), 2oo3 voting
Number of Output Channels	32 (16 + 16)
Output Type	Dual-channel, commoned DC digital outputs with self-protection
Termination Panel (Option 1)	2× ISTA-TR-DO-SD-36XX-118274 (Part No. 118274)
Termination Panel (Option 2)	2× ISTA-TR-DO-SL2-36XX-118273 (Part No. 118273)
Termination Panel (Option 3)	2× ISTA-TR-DO-SL2-36XX-118288 (Part No. 118288)
KF-Module Type (Option 1)	KFD2-SD-Ex1.48... (single channel, DO)
KF-Module Type (Options 2 & 3)	KFD2-SL2-Ex2.B (dual channel, DO)
System Connector	56-pin ELCO female (small key: 3, large key: 3)
Motherboard Dimensions (W×H×D)	325 × 150 × 150 mm
Fuse Rating	T2A (2 A)
Power Supply Screw Terminals	Yes (PW1, PW2)
Alarm Screw Terminal	Yes
LB/SC Monitoring	Available on certain motherboard variants (118288)
LED Indicators	Power and power failure
Safety Rating	SIL 3 (IEC 61508), TÜV/FM certified
Hazardous Area Compatibility	Ex (intrinsic safety) with appropriate KF-modules

Description

The 3664 is a high-density digital output module from Triconex, engineered for the Tricon Triple Modular Redundant (TMR) Safety Instrumented System (SIS). The 3664 provides 32 non-commoned output channels arranged as two banks of 16, each interfacing through a 56-pin ELCO system connector. The 3664 supports three motherboard variants: ISTA-TR-DO-SD-36XX-118274 with single-channel KFD2-SD-Ex1.48... modules, and ISTA-TR-DO-SL2-36XX-118273/118288 with dual-channel KFD2-SL2-Ex2.B modules. The 3664 incorporates 2 A fuses per channel, power supply and alarm screw terminals, and LED status indicators. With Ex certification and SIL 3 compliance, the 3664 delivers fault-tolerant digital output control for critical safety applications.

Functions

Digital Output Actuation – Drives 32 discrete output channels (two groups of 16) to control field devices such as solenoid valves, motor starters, and alarms
Fault-Tolerant Output Control – Triple Modular Redundant (TMR) architecture with 2-out-of-3 (2oo3) voting ensures correct output even with a single channel failure
Intrinsic Safety Interface – Interfaces with Pepperl+Fuchs KF-modules (KFD2-SD-Ex1.48... or KFD2-SL2-Ex2.B) for hazardous area applications
Line Fault Monitoring – LB/SC (Line Break/Short Circuit) monitoring available on select motherboard variants (118288) for enhanced diagnostics
Power Distribution – Distributes field power to output channels via PWR1/PWR2 screw terminals
Alarm Indication – Provides alarm screw terminal and LED indicators for power and power failure status

Features

32 High-Density Outputs – Provides 32 non-commoned digital output channels in a compact form factor, organized as two banks of 16
Triple Modular Redundancy (TMR) – Three independent processing channels with 2-out-of-3 (2oo3) voting architecture ensure fault-tolerant operation
Flexible Motherboard Options – Supports three motherboard variants with single-channel (KFD2-SD-Ex1.48...) or dual-channel (KFD2-SL2-Ex2.B) KF-modules
Intrinsic Safety Compatibility – Ex-certified KF-modules enable deployment in hazardous area applications
Comprehensive Diagnostics – LB/SC monitoring on select variants; LED indicators for power and power failure
Robust Protection – 2 A fuses per channel protect against overcurrent conditions
SIL 3 Certified – TÜV/FM certified for safety-critical applications per IEC 61508
Standardized Interface – 56-pin ELCO female system connector with defined keying (small key: 3, large key: 3)

Theory of Operation

The 3664 functions as a high-density digital output interface within the Tricon TMR safety architecture. Each output channel is driven by a Pepperl+Fuchs KF-module (either single-channel KFD2-SD-Ex1.48... or dual-channel KFD2-SL2-Ex2.B) mounted on the motherboard. The module provides 32 non-commoned outputs arranged as two banks of 16 channels (channels 1–16 on Motherboard 1 via connector A; channels 17–32 on Motherboard 2 via connector B).

The module employs Triple Modular Redundancy (TMR) : each output command is processed by three independent channels within the Tricon system. The 2-out-of-3 (2oo3) voting mechanism ensures that the final output state is correct even if one channel fails. This architecture eliminates single points of failure—a fault in any one channel cannot produce an incorrect output.

Field power is supplied via PWR1/PWR2 screw terminals on the motherboard, with each channel protected by a 2 A fuse (T2A). The KF-modules provide galvanic isolation between the Tricon logic and the field output circuits, enabling intrinsic safety (Ex) compliance for hazardous area installations. Select motherboard variants (118288) include LB/SC (Line Break/Short Circuit) monitoring for enhanced diagnostic coverage. LED indicators provide visual status of power and power failure conditions, while the alarm screw terminal allows external annunciation of fault conditions.

FAQ

Q1: How many output channels does the 3664 provide?

A1: The 3664 provides 32 non-commoned digital output channels, organized as two banks of 16 channels. Channels 1–16 are on Motherboard 1 (connector A), and channels 17–32 are on Motherboard 2 (connector B).

Q2: What motherboard options are available for the 3664?

A2: The 3664 supports three motherboard variants: ISTA-TR-DO-SD-36XX-118274 (single-channel KFD2-SD-Ex1.48... modules), ISTA-TR-DO-SL2-36XX-118273 (dual-channel KFD2-SL2-Ex2.B modules), and ISTA-TR-DO-SL2-36XX-118288 (dual-channel KFD2-SL2-Ex2.B modules with LB/SC monitoring).

Q3: What is the TMR architecture of the 3664?

A3: The 3664 uses Triple Modular Redundancy (TMR) with 2-out-of-3 (2oo3) voting. Each output command is processed by three independent channels, ensuring fault-tolerant operation—if one channel fails, the other two continue to provide correct output.

Q4: Is the 3664 suitable for hazardous area installations?

A4: Yes. The 3664 interfaces with Pepperl+Fuchs KF-modules (KFD2-SD-Ex1.48... or KFD2-SL2-Ex2.B) that provide intrinsic safety (Ex) isolation, enabling deployment in hazardous area applications.

Q5: What diagnostic features does the 3664 provide?

A5: The 3664 provides LED indicators for power and power failure status, an alarm screw terminal for external fault annunciation, and LB/SC (Line Break/Short Circuit) monitoring on select motherboard variants (118288). Each channel is protected by a 2 A fuse.

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