Honeywell 2MLQ-TR2A – Digital Output Module | TDC/TPS DCS Platform
Engineering Background: The Honeywell 2MLQ-TR2A is a relay-type digital output module designed for use within Honeywell’s TDC 3000 / TotalPlant Solution (TPS) Distributed Control System architecture. It provides hardwired discrete output capability to field devices such as solenoid valves, motor starters, and alarm annunciators in process-critical environments.
Product Positioning: Sourced directly from verified industrial channels, the 2MLQ-TR2A is a preferred replacement and spare card for petrochemical, power generation, and continuous process plants running legacy Honeywell TDC/TPS infrastructure. Konmask.com maintains ready stock to support urgent MRO and planned turnaround procurement.
Complete Technical Specifications
- Part Number: 2MLQ-TR2A
- Manufacturer: Honeywell Process Solutions
- Module Type: Digital Output (DO) – Relay Contact
- Platform Compatibility: Honeywell TDC 3000 / TotalPlant Solution (TPS)
- Output Type: Relay (dry contact)
- Number of Output Channels: 16 points (typical for MLQ series)
- Output Voltage Rating: Up to 120 VAC / 30 VDC
- Output Current Rating: 2 A per channel (resistive load)
- Isolation: Optically isolated outputs
- Backplane Interface: TDC 3000 standard card cage bus
- Form Factor: Standard TDC card module
- Weight: 110 g (approx.)
- Operating Temperature: 0°C to 60°C
- Humidity: 5% to 95% RH, non-condensing
- Certifications: CE, UL (per Honeywell TDC platform approval)
Proven Application Environments
- Petroleum refining and upstream oil & gas facilities
- Chemical and petrochemical continuous process plants
- Power generation (coal, gas, nuclear auxiliary systems)
- Pulp & paper and water treatment automation
- Pharmaceutical batch and continuous manufacturing
- Any facility operating Honeywell TDC 3000 or TPS DCS infrastructure
Engineering Advantages
- Drop-in Replacement: Direct plug-in compatibility with existing TDC 3000 / TPS card cages — no hardware modification required
- Relay Contact Output: Inherently noise-immune dry-contact switching suitable for high-interference industrial environments
- Optical Isolation: Protects DCS backplane from field-side voltage transients and ground loops
- Proven Reliability: Honeywell MLQ-series modules are field-proven across decades of continuous process operation
- Reduced Downtime Risk: Stocking a spare 2MLQ-TR2A eliminates extended lead-time exposure during unplanned outages
System Architecture & Signal Flow
The 2MLQ-TR2A resides in the TDC 3000 / TPS I/O card cage and communicates via the standard Honeywell backplane bus. The DCS controller issues discrete output commands through the backplane; the module’s internal relay drivers energize the corresponding relay coils, closing or opening the field-side dry contacts. Field wiring connects to the module’s terminal block or marshalling cabinet, driving actuators, solenoids, or indicator circuits. The optical isolation barrier between the logic side and the relay coil side ensures that field-side faults do not propagate to the DCS processor.
Sourcing & Quality Verification
- All units are sourced from authorized industrial distributors or decommissioned plant inventories with documented chain of custody
- Each module undergoes visual inspection, label verification, and functional bench test prior to shipment
- Firmware revision and hardware revision markings are documented and disclosed upon request
- Counterfeit-risk mitigation: serial number and date code verification performed on every unit
- 30-day return policy for DOA units; warranty terms available upon inquiry
Procurement Process
- Submit RFQ: Contact support@konmask.com or call +0086 19859288691 with your required quantity and delivery timeline
- Receive Quote: Pricing, lead time, and availability confirmed within 1 business day
- Order Confirmation: Purchase order accepted via email; proforma invoice issued for prepayment or net terms (qualified accounts)
- Inspection & Dispatch: Module tested, photographed, and packed with anti-static protection; tracking number provided
- Delivery: DHL / FedEx / UPS express worldwide; EXW Xiamen or CIF available
Technical FAQ
Q: Is the 2MLQ-TR2A compatible with both TDC 3000 and TPS systems?
A: Yes. The MLQ-series modules are designed for the unified TDC 3000 / TPS I/O subsystem and are interchangeable across both platform generations.
Q: Can this module be used with Honeywell Experion PKS?
A: The 2MLQ-TR2A is a legacy TDC/TPS card and is not natively compatible with Experion PKS Series C or later I/O. Migration adapters may exist — consult your Honeywell system integrator.
Q: Do you provide a test report or functional verification certificate?
A: Yes. A bench-test report is available upon request at no additional charge. Please specify this requirement when submitting your RFQ.
Q: What is the typical lead time?
A: In-stock units ship within 2–3 business days. Out-of-stock items typically have a 2–6 week sourcing lead time depending on market availability.
Q: Can you supply multiple units for a plant-wide spare parts program?
A: Yes. Volume pricing is available for orders of 3 or more units. Contact us for a blanket order arrangement.
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Contact: support@konmask.com | +0086 19859288691
