DCS Chassis Slot Management Solution – Honeywell 2MLR-DMMA | TDC 3000 Series
Where This Product Is Used
The Honeywell 2MLR-DMMA Dummy Module is deployed in TDC 3000 Distributed Control System (DCS) redundant controller enclosures wherever card slots are left unpopulated. It is a critical passive component used across:
- Oil & Gas refineries – maintaining EMI shielding integrity in hazardous-area control rooms
- Chemical & petrochemical plants – preserving chassis airflow balance in multi-loop process controllers
- Power generation facilities – filling unused slots in redundant LCN (Local Control Network) node enclosures
- Pulp & paper mills – protecting open bays during phased system expansions
- Pharmaceutical manufacturing – ensuring GMP-compliant enclosure closure in validated DCS environments
- Water treatment plants – maintaining NEMA/IP-rated enclosure standards in remote RTU cabinets
Wherever a TDC 3000 chassis has an empty slot, the 2MLR-DMMA is the specified solution to maintain system reliability and regulatory compliance.
Technical Specifications
| Part Number / SKU | 2MLR-DMMA |
| Manufacturer | Honeywell Process Solutions |
| Series / Platform | TDC 3000 / LCN |
| Module Type | Dummy / Blank Slot Filler Module |
| Form Factor | Single-width card module |
| Weight | 140 g (approx.) |
| Compatibility | TDC 3000 Redundant Controller Chassis (2MLR series) |
| Function | Slot filler – no active electronics; maintains chassis EMI shielding and airflow |
| Condition Available | New / Refurbished / Tested Surplus |
Why Engineers Specify This Model
- EMI/RFI Shielding Continuity – Open slots compromise the Faraday cage of the controller chassis. The 2MLR-DMMA restores full shielding, protecting adjacent active modules from electromagnetic interference.
- Thermal Management – Blank modules maintain designed airflow paths within the chassis, preventing hot spots that degrade MTBF of neighboring cards.
- Mechanical Chassis Integrity – Prevents accidental contact with live backplane connectors during maintenance operations.
- Regulatory & Audit Compliance – Many process safety audits (IEC 61511, ISA-84) require all chassis slots to be properly terminated or filled.
- OEM Specified Part – Using the Honeywell-specified dummy module ensures compatibility with existing 2MLR chassis rail dimensions and locking mechanisms.
Complete System Bill of Materials
The 2MLR-DMMA is typically ordered alongside the following TDC 3000 components:
- Honeywell 2MLR-DMMA – Dummy Module (this item)
- Honeywell 51304485-100 – TDC 3000 LCN Node Module
- Honeywell 51401642-100 – Redundant Controller Module
- Honeywell 51304453-100 – Power Supply Module
- Honeywell 51304516-100 – LCN Cable Assembly
- Honeywell 51190493-100 – Chassis Backplane
Contact us to source complete BOM kits for TDC 3000 system builds or expansions.
Compliance & Industry Standards
- Designed for use in systems compliant with IEC 61511 (Functional Safety – Process Industry)
- Supports ISA-84 Safety Instrumented System (SIS) enclosure requirements
- Compatible with ATEX / IECEx zone-rated control room installations (passive component)
- Supports NEMA 4 / IP54 enclosure integrity when chassis is fully populated
- Manufactured under Honeywell’s ISO 9001 certified quality management system
Quality Assurance & Sourcing
All Honeywell 2MLR-DMMA units offered by Konmask.com are:
- Sourced from authorized distributors or verified surplus channels
- Inspected for physical integrity, label authenticity, and connector condition
- Stored in ESD-safe, climate-controlled warehousing
- Shipped with anti-static packaging and protective foam inserts
- Backed by our 30-day DOA (Dead on Arrival) guarantee
How to Source This Part
Ready to order or need a formal quotation for your procurement team?
- Online: Add to cart directly on this page for immediate checkout
- RFQ / Bulk Orders: Email support@konmask.com with your required quantity and delivery timeline
- Phone / WhatsApp: +0086 19859288691 – available Mon–Sat, 09:00–18:00 CST
- Lead Time: In-stock units ship within 1–3 business days; sourced units 5–15 business days
- Export: We support international shipping with full commercial invoice and packing list documentation
Application-Specific FAQ
Q: Can the 2MLR-DMMA be used in non-redundant TDC 3000 chassis?
A: Yes. While designated for the 2MLR redundant controller series, the module’s form factor is compatible with standard TDC 3000 chassis rails. Verify slot width before ordering.
Q: Does this module require any configuration or firmware?
A: No. The 2MLR-DMMA is a fully passive mechanical component with no active electronics, firmware, or software configuration required.
Q: Is this part still manufactured by Honeywell?
A: The TDC 3000 platform is in extended lifecycle support. Konmask.com specializes in sourcing genuine surplus and refurbished stock for legacy DCS systems.
Q: What is the minimum order quantity (MOQ)?
A: MOQ is 1 unit. Volume pricing is available for orders of 5+ units — contact us for a quote.
Q: Can you provide a Certificate of Conformance (CoC)?
A: Yes, a CoC is available upon request for verified new-stock units.
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Contact: support@konmask.com | +0086 19859288691
