Process Control Solution – Honeywell 2MLQ-TR4A-CC | TotalPlant Solution (TPS) DCS
Where This Product Is Used
The Honeywell 2MLQ-TR4A-CC is a Digital Output (DO) module designed for the Honeywell TotalPlant Solution (TPS) Distributed Control System platform. It is widely deployed in mission-critical continuous-process industries where reliable, high-density discrete output control is essential:
- Oil & Gas Refineries – Valve actuator control, pump start/stop sequencing, and ESD (Emergency Shutdown) interlock outputs
- Petrochemical & Chemical Plants – Reactor feed control, agitator on/off commands, and safety relay driving
- Power Generation (Thermal & Combined Cycle) – Turbine auxiliary control, burner management system (BMS) outputs, and breaker trip signals
- Pulp & Paper Mills – Conveyor drive enable, steam valve control, and process interlock outputs
- Pharmaceutical Manufacturing – Clean-room HVAC damper control and batch reactor sequencing
- Water & Wastewater Treatment – Pump station control, dosing system enable, and alarm annunciator outputs
Technical Specifications
| Part Number | 2MLQ-TR4A-CC |
| Manufacturer | Honeywell Process Solutions |
| Product Series | TotalPlant Solution (TPS) / TDC 3000 |
| Module Type | Digital Output (DO) Module |
| Output Channels | Typically 16-channel discrete output |
| Output Signal | 24 VDC / 120 VAC solid-state or relay contact (per channel configuration) |
| Communication Bus | Local Control Network (LCN) / Universal Control Network (UCN) |
| Backplane Compatibility | TPS I/O Link / HPM (High-Performance Process Manager) |
| Isolation | Optical isolation per channel group |
| Operating Temperature | 0 °C to 60 °C (32 °F to 140 °F) |
| Humidity | 5% to 95% RH, non-condensing |
| Weight | 120 g (module only) |
| Form Factor | Card/module for TPS I/O card cage |
| Certifications | CE, UL Listed, FM Approved (Class I, Div 2) |
Why Engineers Specify This Model
- Platform Continuity – Direct drop-in replacement for aging TPS/TDC 3000 systems without requiring controller reconfiguration or database changes
- High Channel Density – Maximizes cabinet space utilization in brownfield expansions where rack space is constrained
- Optical Isolation – Protects the control network from field-side voltage transients and ground loops common in heavy industrial environments
- Proven Reliability – MTBF exceeding 200,000 hours in continuous-process service; widely validated in SIL-rated safety loops
- Hot-Swap Capable – Supports online module replacement in redundant HPM configurations, eliminating planned shutdown requirements for maintenance
- Firmware Stability – Compatible with TPS R500+ software releases; no firmware upgrade required for most installations
Complete System Bill of Materials
For a fully operational TPS digital output loop, the following components are typically required alongside the 2MLQ-TR4A-CC:
- HPM (High-Performance Process Manager) – e.g., 51304485-100
- I/O Link Interface Module – e.g., 51304754-150
- TPS Card Cage / I/O Chassis – compatible 6- or 12-slot cage
- Field Termination Assembly (FTA) – matched to DO channel type (relay or solid-state)
- 24 VDC Power Supply Module – e.g., 51195896-100
- LCN Cable & Connectors – shielded twisted-pair per Honeywell LCN spec
- Honeywell TPS Engineering Workstation (EWS) – for configuration and diagnostics
Contact us to source any of the above companion components — we maintain broad TPS/TDC 3000 inventory.
Compliance & Industry Standards
- IEC 61511 – Functional Safety for Process Industry Sectors (SIL loop compatibility)
- IEC 61131-2 – Programmable Controllers: Equipment Requirements and Tests
- ATEX / IECEx – Suitable for use in associated apparatus configurations for Zone 2 / Class I Div 2 hazardous areas
- CE Marking – EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU
- UL 508 – Industrial Control Equipment
- RoHS – Compliant (EU Directive 2011/65/EU)
Quality Assurance & Sourcing
Every Honeywell 2MLQ-TR4A-CC unit offered by Konmask.com undergoes a structured quality process before dispatch:
- ✅ Visual Inspection – PCB, connectors, and housing checked for physical damage, corrosion, or counterfeit indicators
- ✅ Functional Power-On Test – Module energized and channel status LEDs verified against known-good reference
- ✅ Firmware Version Check – Confirmed compatible with TPS R500 and later releases
- ✅ ESD-Safe Packaging – Shipped in anti-static bag with foam cushioning and moisture barrier
- ✅ Traceability – Serial number and test record retained for 5 years
Units are sourced from decommissioned plant upgrades, authorized distributors, and verified surplus channels. We do not sell unchecked, untested, or cosmetically misrepresented stock.
How to Source This Part
- Add to Cart – Click Add to Cart above for standard lead time (typically 3–7 business days ex-warehouse)
- Request a Quote – For volume orders (>5 units), OEM pricing, or consignment programs, email support@konmask.com
- Urgent / AOG Orders – Call or WhatsApp +0086 19859288691 for same-day shipping assessment
- Cross-Reference Check – Not sure if this is the right part? Send us your existing module label photo and we will confirm compatibility
- Export & Customs – We handle HS code classification, commercial invoices, and export documentation for international shipments
Application-Specific FAQ
Q: Can the 2MLQ-TR4A-CC replace a 2MLQ-TR4A without the -CC suffix?
A: The -CC suffix typically denotes a conformal-coated PCB variant for humid or corrosive environments. Electrically and functionally equivalent; the -CC version is the preferred replacement in most cases.
Q: Is this module compatible with Honeywell Experion PKS?
A: The 2MLQ-TR4A-CC is a TPS/TDC 3000 platform module and is not natively compatible with Experion PKS C300 or EPKS I/O. For Experion migrations, contact us for the appropriate Series C I/O equivalent.
Q: What is the maximum load current per output channel?
A: Per Honeywell TPS I/O specifications, each solid-state DO channel supports up to 0.5 A continuous at 24 VDC. Relay contact versions support up to 2 A at 120 VAC. Confirm your FTA model for exact ratings.
Q: Do you provide a warranty?
A: Yes. All units carry a 90-day functional warranty from date of shipment. Extended warranty and exchange programs are available — contact us for details.
Q: Can you supply the matching Field Termination Assembly (FTA)?
A: Yes. We stock a range of TPS FTAs. Provide your existing FTA part number or wiring diagram and we will match the correct assembly.
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Contact: support@konmask.com | +0086 19859288691
