Guizhou Yuanmiao Automation Equipment Co., Ltd.: 1Yr

Anshun, Guizhou, China; Main products: ABB Triconex Foxboro LAM, Bentley Motorola Schneider, Kollmorgen HIMA ALSTOM, Reliance GE HONEYWELL NI、ICS

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Home > Products > ABB > ABB 3BDH000741R1 CTI21-P Ex Explosion-Proof Control Interface Module

ABB 3BDH000741R1 CTI21-P Ex Explosion-Proof Control Interface Module

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Product Details

Material	Other, Global universal model	Condition	Other, Global universal model
Task	Other, Global universal model	Mathematical Model	Other, Global universal model
Signal	Other, Global universal model	Customized	Non-Customized
Structure	Other, Global universal model

Product Description

The ABB 3BDH000741R1 CTI21-P Ex is an explosion-proof control interface module in ABB's industrial automation portfolio, primarily used in electrical systems of hazardous areas to enable signal transmission, equipment control, and safety protection functions.

Core Functions and FeaturesExplosion-Proof Certification and Safety Design

Explosion-Proof Rating: Complies with international explosion-proof standards (such as IEC 60079, ATEX, etc.), ensuring safe operation in explosive gas environments (e.g., Zone 1/2 or Zone 21/22).
Protection Structure: Adopts flameproof (Ex d) or increased safety (Ex e) design. The housing features impact resistance, dustproof, and waterproof capabilities to ensure internal circuits are unaffected by external hazardous environments.

Signal Processing and Interface Capabilities

I/O Interfaces: Supports transmission and conversion of multiple electrical signals (e.g., analog, digital), enabling connection to sensors, actuators, or control systems.
Communication Protocols: May be compatible with industrial communication protocols such as Modbus, Profibus, EtherNet/IP, etc., to realize data interaction with upper computers or PLCs.

Environmental Adaptability

Operating Temperature: Typically supports -20°C to +60°C (subject to the product manual), adapting to harsh industrial environments.
Anti-Interference Capability: Features electromagnetic compatibility (EMC) design to resist electromagnetic interference in industrial fields and ensure stable signal transmission.

Reliability and Maintenance

Redundancy Design: Key circuits may adopt redundant configurations to reduce the risk of single-point failures.
Self-Diagnosis Function: Built-in fault monitoring mechanism provides real-time feedback on equipment operation status for convenient maintenance and repair.

Technical Parameters

Parameter Category	Specific Indicators
Explosion-Proof Certification	For example, ATEX Ex d IIC T6 / IECEx Ex d IIC T6 for gas environments; or Ex tD A21 IP65 for dust environments.
Operating Voltage	DC 24V / AC 220V (specifically dependent on model configuration).
Interface Types	Analog input/output (e.g., 4-20mA, 0-10V), digital input/output (dry contacts, transistor outputs).
Communication Interfaces	Supports RS-485, Ethernet (RJ45), or dedicated industrial bus interfaces.
Protection Level	The housing protection level is typically IP65 or higher, preventing dust intrusion and water spray damage.
Mounting Method	Rail mounting or panel mounting, suitable for standard industrial control cabinets.

Application Fields

Oil and Gas: Scenarios with flammable and explosive gases such as drilling platforms, refineries, and natural gas processing stations, used for motor control, valve regulation, or pressure monitoring systems.
Chemical Industry: Chemical raw material production, storage, and transportation links, such as reactor control and pipeline pressure protection.
Coal Mines and Dust Environments: Suitable for electrical equipment control in underground coal mines (dust explosion-proof) or flour/grain processing workshops (dust explosion risk areas).
Offshore Platforms and Ships: Moist, highly corrosive environments with potential explosive gases, such as offshore oil and gas extraction platforms and oil tankers.

Comparison with Series Products

Model	CTI21-P Ex	CTI22-P Ex	CTI31-P Ex
Core Differences	Basic explosion-proof interface module for small-scale signal control.	Supports more I/O channels, suitable for complex systems.	Integrates communication gateway functions, supporting multi-protocol conversion.
Explosion-Proof Rating	Ex d IIC T6	Ex d IIC T6 + Ex tD A21	Ex d IIC T6, supports intrinsically safe (Ex i) interfaces.
Typical Applications	Single-device control, simple sensor interfaces.	Multi-device linkage control, large control cabinet integration.	The explosion-proof area communication hub of the distributed control system (DCS).

Company Profile

Guizhou Yuanmiao Automation Equipment Co., Ltd.

Main products: Covering globally renowned brands: Bently Nevada, Triconex, Woodward, Foxboro, Westinghouse, Reliance, Schneider Modicon, ABB, AB (Allen-Bradley), Motorola, GE Fanuc, Yaskawa, Bosch Rexroth Rexroth, ACSO, YOKOGAWA, Rexroth, NI, ICS Triplex, Kollmorgen, Mitsubishi, MOOG, Emerson, B&R B&r, SST, ALSTOM, KUKA EPRO, LAM HIMA dark Horse, HONEYWELL, prosoft, AMAT, SIEMENS, etc. The product categories include: DCS system accessories, robot system spare parts, large servo system spare parts, etc., which are widely used in power, chemical, metallurgy, intelligent manufacturing and other fields.

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Guizhou Yuanmiao Automation Equipment Co., Ltd.: Contact nameyezi
Chat Now; AddressXixiu District, Anshun, Guizhou

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Product Categories

ABB	Bently Nevada	TRICONEX	GE
ICS Triplex	HIMA	MOTOROLA	WOODWARD
HONEYWELL	Foxboro	Schneider Modicon	YOKOGAWA
EPRO	MOOG	Westinghouse	Reliance
Emerson	B&R	ALSTOM	LAM
KONGSBERG	FANUC	National Instruments	Kollmorgen
Other Brands	Rexroth	PROSOFT	Vibro-meter
Allen-Bradley	ZYGO	Praxis	METSO
Basler Electric	A-B	XYCOM	AMAT
TOSHIBA	CCC

Find Similar Products By Category: Electrical & Electronics > Electrical Control System

Product Tags:

3BDH000741R1 | CTI21-P Ex | 1MRK002496-AC

ABB 3BDH000741R1 CTI21-P Ex Explosion-Proof Control Interface Module

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