Description
Overview
The Emerson KJ2005X1-MQ1 (12P3273X012) is a high-performance M-series MQ Controller designed for the DeltaV™ Distributed Control System. It functions as the central processing unit for M-series I/O subsystems, executing control logic, coordinating data, and managing communication with field devices. The MQ revision delivers improved processing speed, larger memory capacity, and robust redundancy features, making it ideal for modern process automation applications.
Key Features
High-Speed Processing
Optimized for demanding control loops, the MQ controller executes logic and I/O handling faster than legacy M3 and M5 controllers, supporting high-speed process control.
Expanded Memory Capacity
Handles complex configurations and up to 750 signals per controller. Supports extended event logging and history buffering for temporary network interruptions.
Redundant Architecture
Supports 1:1 hot-standby redundancy. When paired with a second MQ controller, the system maintains continuous operation with seamless failover.
Industrial Durability
-
Operating Temperature: –40°C to +70°C
-
G3 Conformal Coating for moisture, dust, and chemical resistance
-
Engineered for shock and vibration tolerance, suitable for installation near heavy machinery
Flexible Communication
Dual redundant 10/100 Mbps Ethernet ports with auto-sensing capabilities ensure reliable connectivity to the DeltaV Control Network.
RoHS Compliance
Designed in accordance with GB/T 26572 standards for hazardous substances. EFUP (Environmentally Friendly Use Period) is valid under normal operating conditions defined in the product manual.
Technical Specifications
| Feature |
Specification |
| Model Number |
KJ2005X1-MQ1 |
| Part Number |
12P3273X012 |
| Input Power |
24 VDC at 250 mA (Nominal) |
| Internal Fuse |
3.0 A (Non-replaceable) |
| Network |
Redundant Ethernet A/B, Auto-Sensing |
| Maximum Local I/O Modules |
Up to 64 |
| Certifications |
ATEX, CE, UL, FM Class 1 Div 2 |
| Operating Temperature |
–40°C to +70°C |
| Environmental Protection |
G3 Conformal Coating, Shock and Vibration Resistant |
| Redundancy |
1:1 Hot-Standby Support |
Applications
Ideal for process automation in chemical, oil & gas, and manufacturing industries. The MQ controller is suitable for new M-series installations or upgrading legacy systems, providing the computational headroom required for advanced control strategies and real-time data handling.
FAQ
Can the controller be replaced while the system is active?
No. Power must be turned off before removal or installation.
Does this unit require calibration?
No calibration is needed, and there are no user-serviceable parts.
How many I/O signals can the MQ controller manage?
Up to 750 signals per controller, depending on configuration.
Is this product compliant with China RoHS standards?
Yes. Critical components meet GB/T 26572 limits, with EFUP valid under specified operating conditions.
What type of redundancy is supported?
1:1 hot-standby redundancy allows seamless failover with a mirrored secondary controller.
