Honeywell 2MLQ-TR1C-CC – Discrete Digital Output Module | TDC 3000 DCS Platform
The Honeywell 2MLQ-TR1C-CC is a discrete digital output (DO) module engineered for the Honeywell TDC 3000 Distributed Control System platform. Designed to meet the rigorous demands of continuous-process industries, this module delivers deterministic, high-integrity discrete output control across critical field devices including solenoid valves, motor starters, and relay-driven actuators.
For procurement engineers sourcing legacy TDC 3000 spare parts or executing a phased DCS lifecycle extension, the 2MLQ-TR1C-CC represents a factory-specification replacement with full backward compatibility — eliminating costly re-engineering and minimizing plant downtime risk.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number / SKU | 2MLQ-TR1C-CC |
| Manufacturer | Honeywell Process Solutions |
| Platform / Series | TDC 3000 / TotalPlant Solution (TPS) |
| Module Type | Discrete Digital Output (DO) |
| Output Channels | 16-point discrete output |
| Output Signal Type | 24 VDC / 120 VAC discrete (relay or solid-state, per configuration) |
| Communication Bus | Local Control Network (LCN) / Universal Control Network (UCN) |
| Backplane Compatibility | TDC 3000 standard card cage / HPM module rack |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
| Humidity | 5% to 95% RH, non-condensing |
| Power Supply | Supplied via backplane (24 VDC bus) |
| Approvals / Certifications | CE, UL listed (per original factory spec) |
| Weight | 120 g (approx.) |
| Condition Available | New surplus / Refurbished / Used-tested |
Proven Application Environments
- Petroleum Refining: Discrete valve sequencing and pump motor control in crude distillation and hydrotreating units
- Petrochemical Plants: Reactor feed/discharge valve actuation and emergency shutdown (ESD) relay outputs
- Power Generation: Turbine auxiliary control and boiler burner management system (BMS) discrete outputs
- Pulp & Paper: Digester valve control and conveyor motor start/stop sequencing
- Pharmaceutical Manufacturing: CIP/SIP valve control in GMP-compliant batch processing environments
- Chemical Processing: Agitator and pump control in continuous reaction systems
Engineering Advantages
- Drop-in Replacement: Factory-specification compatibility with existing TDC 3000 card cages — no firmware re-flashing or re-configuration required
- Deterministic Output Control: Synchronized with LCN/UCN scan cycle for predictable, low-latency discrete actuation
- Fault Isolation Architecture: Per-channel diagnostics with module-level fault reporting to the operator console
- Extended Plant Life: Enables DCS lifecycle extension without full migration to newer platforms (e.g., Experion PKS)
- Reduced Commissioning Risk: Eliminates I/O re-mapping, loop re-tuning, and operator retraining costs
- Inventory Optimization: Single SKU covers multiple output applications within the TDC 3000 architecture
System Architecture & Signal Flow
The 2MLQ-TR1C-CC resides in the High-Performance Process Manager (HPM) or equivalent TDC 3000 controller rack. Field wiring terminates at the module’s marshalling terminal assembly. The module receives discrete output commands from the HPM controller via the backplane bus, converts them to field-level voltage/relay signals, and drives connected field devices. Fault status is reported upstream to the Universal Station (US) or Application Module (AM) via the LCN.
Signal Flow: Operator Console → LCN → HPM Controller → Backplane Bus → 2MLQ-TR1C-CC → Field Terminal Assembly → Solenoid / Relay / Motor Starter
Sourcing & Quality Verification
- All units sourced from verified industrial surplus channels, decommissioned plant inventories, or authorized distributors
- Pre-shipment inspection includes: visual inspection, firmware version verification, connector integrity check, and functional bench test where applicable
- Serialized traceability maintained for each unit — serial number and firmware revision documented on request
- Anti-counterfeit verification: label authentication, PCB marking cross-check against Honeywell factory records
- Packaging: ESD-safe anti-static bag + foam-lined carton, suitable for international air freight
Procurement Process
- Submit RFQ — Contact us with your required quantity, condition preference (new surplus / refurbished / tested-used), and delivery timeline
- Receive Quote & Availability Confirmation — Typically within 4–8 business hours for stocked items
- Order Confirmation & Payment — T/T bank transfer, PayPal, or trade credit (approved accounts)
- Quality Inspection & Documentation — Unit inspected, serial number recorded, test report issued
- Shipment — DHL / FedEx / UPS express worldwide; EXW Xiamen or CIF destination available
- After-Sales Support — 90-day warranty on tested units; technical support for installation and commissioning
Technical FAQ
Q: Is the 2MLQ-TR1C-CC compatible with the Honeywell Experion PKS platform?
A: No. This module is designed exclusively for the TDC 3000 / TPS architecture. Experion PKS uses a different I/O bus and card form factor. For Experion compatibility, please inquire about our C300 / EHPM I/O module inventory.
Q: What is the difference between 2MLQ-TR1C-CC and 2MLQ-TR1C?
A: The “-CC” suffix typically denotes a conformal-coated PCB variant, providing enhanced protection against humidity and corrosive atmospheres. Confirm your environment requirements before substituting between variants.
Q: Can you provide a Certificate of Conformance (CoC) or test report?
A: Yes. A functional test report and CoC are available for refurbished and tested-used units. Please request at time of order.
Q: What is the lead time for out-of-stock units?
A: Typical sourcing lead time is 2–4 weeks for hard-to-find TDC 3000 modules. We maintain an active global sourcing network for legacy Honeywell parts.
Q: Do you offer exchange / repair services?
A: Yes. Board-level repair and exchange programs are available. Contact us with your defective unit details for a repair assessment.
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