Fisher CL6721X1-A4 41B5215X132 Discrete I/O Card – DeltaV Distributed Control System Series
When a discrete I/O card fails mid-process, the consequences are immediate and severe: field devices go silent, safety interlocks lose their feedback loop, and operators are left flying blind in a live industrial environment. Unplanned downtime in process industries can cost tens of thousands of dollars per hour — and the root cause is often a single failed I/O module. The Fisher CL6721X1-A4 41B5215X132 DISC I/O Card is the precision-engineered solution that keeps your DeltaV control architecture communicating reliably with the field.
The CL6721X1-A4 (part number 41B5215X132) is a discrete I/O card designed for use within Emerson’s DeltaV Distributed Control System platform — one of the most widely deployed DCS architectures in oil & gas, chemical processing, power generation, and life sciences globally. This card occupies a critical role in the DeltaV I/O subsystem, providing the hardwired digital signal interface between field instruments, actuators, and the DeltaV controller. Its robust design and proven field reliability make it a trusted component in both greenfield installations and brownfield upgrades worldwide.
Technical Specifications
- Manufacturer: Fisher Controls / Emerson Process Management
- Part Number: CL6721X1-A4
- Reference Number: 41B5215X132
- Module Type: Discrete I/O Card (DISC I/O)
- Platform Compatibility: Emerson DeltaV Distributed Control System
- Signal Type: Discrete (Digital) Input/Output
- Form Factor: DeltaV I/O Card (plug-in module)
- Weight: Approx. 1,000 g
- Condition Available: New, Refurbished, Tested Surplus
Note: Detailed electrical specifications (voltage range, channel count, isolation class) should be confirmed against the official Emerson DeltaV product datasheet for CL6721X1-A4 prior to installation.
Key Features & Benefits
- Seamless DeltaV Integration: Designed as a native DeltaV I/O card, it integrates directly into the DeltaV I/O subsystem without additional signal conditioning or protocol conversion.
- Discrete Signal Handling: Accurately reads and drives on/off digital signals from field devices including limit switches, solenoid valves, motor starters, and safety relays.
- Hot-Swap Capable Architecture: Compatible with DeltaV’s redundant and hot-swap I/O architecture, minimizing maintenance downtime.
- Proven Field Reliability: Manufactured to Emerson’s stringent quality standards, this card is trusted in mission-critical process control environments globally.
- Direct Replacement Availability: Sourced as an exact OEM replacement, ensuring full compatibility with existing DeltaV configurations without re-engineering.
- Long Service Life: Built for continuous 24/7 industrial operation in demanding process environments.
Industry & Equipment Applications
- Oil & Gas: Upstream wellhead control, midstream pipeline monitoring, downstream refinery process control
- Chemical & Petrochemical: Reactor interlock systems, batch process automation, safety instrumented systems (SIS)
- Power Generation: Turbine control, boiler management, plant-wide DCS integration
- Life Sciences & Pharmaceuticals: FDA-compliant process automation, clean room environmental control
- Pulp & Paper / Food & Beverage: Continuous process lines requiring reliable discrete I/O feedback
- Water & Wastewater Treatment: Pump station control, valve sequencing, SCADA integration
System Integration & Compatible Parts
The CL6721X1-A4 41B5215X132 is designed for use within the Emerson DeltaV DCS ecosystem. Compatible system components typically include:
- DeltaV MD/MD Plus/MQ Controllers
- DeltaV I/O Carrier Cards and Marshalling Panels
- DeltaV CHARM I/O and Traditional I/O subsystems
- DeltaV SIS (Safety Instrumented System) modules
- Emerson DeltaV Workstations and Application Stations
Please consult your DeltaV system configuration and I/O assignment documentation to confirm slot compatibility before ordering.
Our Quality Assurance Process
- Source Verification: All units are sourced from authorized distributors, OEM surplus, or verified industrial decommissions.
- Visual & Physical Inspection: Each card is inspected for physical damage, connector integrity, and component condition.
- Functional Testing: Where applicable, modules undergo power-on and functional verification testing prior to shipment.
- Anti-Static Packaging: All I/O cards are shipped in ESD-safe packaging to prevent electrostatic damage in transit.
- Traceability Documentation: Test records and sourcing documentation available upon request for critical applications.
How to Order
- Submit an inquiry via the Contact / RFQ form on this page or email support@konmask.com.
- Provide your required quantity, preferred condition (new / refurbished / tested surplus), and delivery timeline.
- Our technical team will confirm availability, lead time, and provide a formal quotation within 24 hours.
- Upon order confirmation, we arrange secure packaging and international shipping with full tracking.
Why Choose Konmask.com?
- Industrial Automation Specialists: We focus exclusively on DCS, PLC, and industrial control system components — not a generalist marketplace.
- Global B2B Supply: Serving engineering firms, system integrators, and plant maintenance teams across 40+ countries.
- Fast Inquiry Response: Dedicated technical sales team responds to RFQs within 24 business hours.
- Competitive Pricing: Direct sourcing relationships enable competitive pricing on both new and surplus inventory.
- Secure International Shipping: Experienced in export compliance, customs documentation, and safe packaging for sensitive electronics.
- After-Sales Support: Technical guidance available post-delivery to assist with installation and commissioning.
Frequently Asked Questions
- Q: Is the CL6721X1-A4 41B5215X132 a new or refurbished unit?
- A: We offer multiple conditions depending on availability — new OEM, factory refurbished, and tested surplus. Please specify your preference in your inquiry and we will confirm current stock.
- Q: Which DeltaV system versions is this card compatible with?
- A: The CL6721X1-A4 is designed for the Emerson DeltaV DCS platform. Compatibility with specific DeltaV software versions should be verified against Emerson’s compatibility matrix for your installation.
- Q: Can you ship internationally?
- A: Yes. We ship globally with full export documentation. Lead times and shipping options will be confirmed at the time of quotation.
- Q: Do you provide a warranty?
- A: Yes. All units come with a standard warranty period. Terms vary by product condition — please request warranty details with your quotation.
- Q: How do I confirm this is the correct part for my system?
- A: Share your DeltaV system configuration details or existing part number with our technical team and we will verify compatibility before processing your order.
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