EMERSON 1C31222G01

Description

Product Description

The EMERSON 1C31222G01 is a Power Supply Module designed for the DeltaV Distributed Control System (DCS), specifically for use within the DeltaV Electronic Marshalling or CHARMS (CHARacterization ModuleS) system. This module is a critical infrastructure component that provides clean, regulated, and isolated DC power to a bank of CHARMS I/O modules within a DeltaV cabinet. The primary function of the EMERSON 1C31222G01 is to convert the incoming AC mains voltage (typically 120/240V AC) into the precise, low-voltage DC power required by the sensitive electronic CHARMS modules, which perform signal conditioning for field devices. By ensuring a stable and reliable power source, this power supply underpins the integrity and availability of the entire I/O segment it serves, making it a foundational element in modern, modular DCS architecture.

Technical Parameters and Specifications

• System Compatibility: Emerson DeltaV DCS, specifically for Electronic Marshalling (CHARMS) systems.
• Module Type: Power Supply Module for CHARMS I/O.
• Input Voltage: Typically accepts a wide range AC input (e.g., 85-264 VAC, 47-63 Hz) for global flexibility.
• Output Voltage: Provides one or more isolated DC output voltages, commonly +24V DC for field device power and +5V DC or similar for logic power to the CHARMS modules.
• Output Power/Rating: Designed to deliver a specific wattage (e.g., 240W, 480W) to support a defined number of CHARMS modules in a power segment.
• Redundancy Support: Can be configured in a N+1 redundant configuration. Multiple 1C31222G01 power supplies can share the load in a single power segment, with automatic load transfer if one unit fails, ensuring uninterrupted power.
• Hot Swappable: Designed to be inserted or removed from the powered DeltaV cabinet without shutting down the system, supporting high availability and ease of maintenance.
• Diagnostics and Monitoring: Features status LEDs (Power OK, Fault) and provides electronic status signals to the DeltaV system for remote monitoring and alarm generation.
• Cooling: May include an integrated cooling fan. Requires adequate clearance and airflow within the cabinet.
• Mounting: Designed to mount on a specific power supply rack or assembly within the DeltaV CHARMS cabinet.
• Certifications: Complies with relevant international safety (UL, cUL, CE) and EMC standards.

Advantages and Key Features

• High Availability through Built-in Redundancy: The capability for N+1 redundancy is a core advantage. By installing multiple EMERSON 1C31222G01 modules, the power system for critical I/O can be made fault-tolerant, eliminating a single point of failure.
• Global Voltage Compatibility: The wide-range AC input allows the same power supply to be deployed in any region without hardware modifications, simplifying spare parts strategy for multinational companies.
• Seamless DeltaV Integration: As a genuine Emerson component, it is fully recognized and managed by the DeltaV system. Its health status is integrated into the plant’s asset management and alarm system, enabling predictive maintenance.
• Modular and Scalable Design: The power system scales with the I/O count. Additional 1C31222G01 modules can be added as the CHARMS rack is expanded, providing a flexible and future-proof power solution.
• Reliability and Clean Power Delivery: Engineered to provide stable, noise-free DC power, which is essential for the accuracy of analog signal conditioning performed by the CHARMS modules and for reliable digital communication.

Application Cases in Various Fields

• Large Chemical Processing Plant: Multiple EMERSON 1C31222G01 power supplies in redundant configuration provide power to CHARMS segments handling thousands of I/O points for reactor control, distillation, and safety systems, ensuring continuous operation.
• Pharmaceutical Bioreactor Control: In a batch process requiring high availability, redundant power supplies ensure that the critical I/O monitoring temperature, pH, and agitation speed never loses power during a valuable batch.
• Oil & Gas LNG Train: Used in the main process control cabinets, where the 1C31222G01 powers CHARMS modules interfacing with cryogenic temperature sensors, pressure transmitters, and control valves.
• Power Generation (Combined Cycle): Provides reliable power to the I/O for balance-of-plant systems (pumps, fans, valves) where unscheduled downtime is extremely costly.

Comparison with Competing Products

Compared to power supplies for competing DCS systems like ABB (System 800xA Power Supplies) or Siemens (PCS 7 SITOP PSU8600), the EMERSON 1C31222G01 is optimized for a specific architecture:

• DeltaV CHARMS Ecosystem Optimization: It is specifically designed to meet the voltage, current, and form-factor requirements of the DeltaV Electronic Marshalling system. Competitors’ supplies are designed for their own I/O backplanes and may offer different redundancy schemes.
• Redundancy Philosophy: The N+1 approach for power within a CHARMS segment is a key design feature of DeltaV. Other systems might use centralized, larger redundant power supplies for entire cabinets rather than distributed, modular redundancy at the I/O segment level.
• Diagnostic Integration: The depth of integration with DeltaV’s asset management and predictive diagnostics software (AMS Device Manager) is a strong point, potentially offering more advanced health insights than a generic industrial power supply.
• Physical Integration: Its mechanical design is tailored for easy mounting and connection within the standardized DeltaV CHARMS cabinet layout, which differs from competitors’ designs.

Selection Suggestions and Precautions

1. Accurate Power Load Calculation: Before selecting and specifying the number of EMERSON 1C31222G01 modules, calculate the total power consumption of all CHARMS modules, field device loads (e.g., 2-wire transmitter power), and any other devices in the power segment. Include a safety margin (typically 20-30%).
2. Implement Redundancy for Critical Loops: For process areas where loss of I/O power would cause a safety incident or major production loss, always design the power segment with N+1 redundancy. The cost of an extra power supply is minimal compared to the risk.
3. Follow Cabinet Layout and Cooling Guidelines: Adhere to Emerson’s installation manuals for spacing, clearances, and airflow. Overheating is a primary cause of power supply failure. Do not obstruct intake or exhaust vents.
4. Use Proper Wiring and Circuit Protection: The AC input wiring must be performed by a qualified electrician according to local codes. Ensure appropriate upstream circuit breakers or fuses are installed to protect the wiring and the 1C31222G01 module itself.
5. Leverage System Diagnostics: Configure the DeltaV system to monitor the status signals from the power supply. Create alerts for power supply faults or “unit in standby” conditions so maintenance can be performed proactively before redundancy is lost.
6. Spare Parts and Lifecycle Management: Keep a spare EMERSON 1C31222G01 module on-site for critical processes to enable immediate hot-swap replacement. Be aware of the product’s lifecycle status; for very old systems, engage with Emerson to understand migration paths to current-generation power solutions within the DeltaV portfolio. Procure only from Emerson or authorized distributors to ensure authenticity and warranty coverage.

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