Honeywell 2MLQ-TR8B-CC – 8-Channel Digital Output Module | TDC 3000 / TotalPlant Solution Platform
Engineering Background
The Honeywell 2MLQ-TR8B-CC is an 8-channel transistor digital output module designed for use within Honeywell’s TDC 3000 and TotalPlant Solution (TPS) Distributed Control System architecture. Built to industrial-grade reliability standards, this module serves as a critical interface between the DCS controller and field-level actuators, solenoids, and discrete control devices in continuous process environments.
Product Positioning
Targeted at maintenance engineers, automation procurement specialists, and MRO sourcing teams managing legacy TDC 3000 / TPS installations, the 2MLQ-TR8B-CC provides a direct, form-fit-function replacement for aging output modules without requiring system reconfiguration. Konmask.com maintains verified surplus inventory to support both emergency replacement and planned lifecycle management programs.
Complete Technical Specifications
| Part Number | 2MLQ-TR8B-CC |
| Manufacturer | Honeywell Process Solutions |
| Series / Platform | TDC 3000 / TotalPlant Solution (TPS) |
| Module Type | Digital Output Module (DO) |
| Output Channels | 8 Channels |
| Output Type | Transistor (Solid-State) |
| Output Configuration | CC (Current Sinking / Common Collector) |
| Signal Standard | Discrete digital output, 24 VDC nominal |
| Housing / Form Factor | Standard TDC 3000 card cage module |
| Weight | 120 g (approx.) |
| Country of Origin | USA |
| Condition | Surplus / Refurbished (tested) |
Proven Application Environments
- Petroleum refining and petrochemical plant DCS control loops
- Chemical processing facilities running TDC 3000 / TPS architecture
- Power generation plants with Honeywell legacy DCS infrastructure
- Pulp & paper and pharmaceutical batch control systems
- LNG terminals and offshore platform automation systems
- MRO lifecycle extension programs for TDC 3000 installed base
Engineering Advantages
- Direct Drop-In Replacement: Form-fit-function compatible with existing TDC 3000 / TPS card cage slots — no firmware changes or reconfiguration required.
- Solid-State Transistor Outputs: Eliminates mechanical relay wear, providing higher switching cycle life and reduced maintenance intervals.
- 8-Channel Density: Maximizes I/O density per card slot, reducing spare parts inventory complexity.
- CC (Common Collector) Configuration: Optimized for current-sinking field devices including solenoid valves, indicator lamps, and relay coils.
- Verified Surplus Stock: Each unit undergoes functional testing prior to shipment from Konmask’s quality-controlled warehouse.
System Architecture & Signal Flow
The 2MLQ-TR8B-CC installs directly into the TDC 3000 / TPS High-Performance Process Manager (HPPM) or Process Manager (PM) card cage. The module receives discrete output commands from the DCS controller via the backplane bus and drives field-side loads through its 8 transistor output channels. The CC (Common Collector) topology means the module sinks current from the field device load, with the positive supply provided externally by the field wiring circuit. This architecture is standard for 24 VDC solenoid valve and relay coil applications in process automation.
Sourcing & Quality Verification
- All units sourced from decommissioned plant inventories or authorized surplus channels
- Pre-shipment functional test performed on dedicated TDC 3000 test bench
- Visual inspection: PCB, connectors, and housing integrity verified
- Serialized tracking and documentation available upon request
- 30-day return policy for DOA (Dead on Arrival) units
Procurement Process
- Submit RFQ via support@konmask.com or the product page inquiry form
- Receive stock confirmation, lead time, and formal quotation within 1 business day
- Issue PO — accepted formats: bank transfer (T/T), PayPal, credit card
- Unit ships with test report and packing list; DHL / FedEx express available worldwide
- Post-delivery technical support provided by Konmask engineering team
Technical FAQ
Q: Is the 2MLQ-TR8B-CC compatible with both TDC 3000 and TPS systems?
A: Yes. The module is designed for the TDC 3000 platform and is fully compatible with TotalPlant Solution (TPS) card cage infrastructure sharing the same backplane standard.
Q: What is the difference between the -CC and other suffix variants?
A: The -CC suffix denotes Common Collector (current sinking) transistor output configuration. Other variants may use Common Emitter (CE) or relay output topologies. Verify your field wiring polarity before substituting variants.
Q: Can Konmask provide a test certificate?
A: Yes. A functional test report is available upon request for each unit shipped.
Q: What is the lead time for this module?
A: In-stock units typically ship within 2–3 business days. Contact us to confirm current availability.
Q: Do you accept returns?
A: Yes. We offer a 30-day DOA return policy. Units must be returned in original packaging with the test report included.
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