Product Description

Overview

The Emerson KJ2005X1-MQ1 is a high-performance S-Series MQ Controller engineered for demanding industrial environments. It functions as the primary controller for DeltaV™ Local I/O systems, managing communication, executing control logic, and providing robust diagnostics for reliable process automation in hazardous and harsh conditions.

Key Features

High-Speed Control Processing
Optimized for complex function block execution and advanced control loops, the MQ Controller handles high-density I/O with minimal scan-time latency, maintaining precise real-time process control.

Redundancy Support
While the KJ2005X1-MQ1 is a simplex controller, it supports pairing with a second unit to form a hot-standby redundant configuration. This setup ensures continuous process operation, with automatic takeover within milliseconds in the event of a failure.

Hot-Pluggable Design
Designed for safe online insertion and removal, the controller can be installed or replaced in powered carriers without disrupting the system, provided the area is non-hazardous.

Advanced Diagnostics
Integrated self-monitoring tracks processor integrity, LocalBus communication, and power stability. Front-panel LEDs provide immediate status feedback, including Active, Standby, and Error indicators.

Environmental Hardening

• Operating Temperature: -40°C to +70°C

• Shock: 10g, 11 ms half-sine wave

• Vibration: 1 mm peak (2–13.2 Hz), 0.7g (13.2–150 Hz)

• Airborne Contaminants: ISA-S71.04 Class G3

• Relative Humidity: 5–95% non-condensing

Safety Certifications

• Hazardous Area: II 3G Ex nA IIC Gc

• Approvals: ATEX (FM12ATEX0090U), IECEx (FMG 12.0035U), and North American Class 1 Div 2

Technical Specifications

Applications

• Central controller for DeltaV S-Series Local I/O subsystems

• Process automation in hazardous chemical, oil & gas, and refining environments

• Redundant system configurations for continuous operations

FAQ

Q: Can the MQ Controller be replaced while powered?
A: The controller supports hot-pluggable installation, but only in confirmed non-hazardous areas. Always de-energize in hazardous environments.

Q: Does the controller require maintenance or calibration?
A: No user service is required. The module is factory-configured for immediate deployment.

Q: How does this differ from KJ2005X1-MQ2?
A: The MQ2 variant supports higher processing loads and additional I/O density for larger installations.