Industrial Control Power Solution – Honeywell 2MLR-AC12 | Redundant Power Supply Series
Where This Product Is Used
The Honeywell 2MLR-AC12 is a redundant AC input power supply module engineered for mission-critical industrial environments where uninterrupted power delivery is non-negotiable. Typical deployment scenarios include:
- Distributed Control Systems (DCS) – Honeywell TDC 3000 / Experion PKS controller racks requiring stable, redundant 24 VDC bus power
- Oil & Gas Processing Plants – Offshore platforms and onshore refineries where power interruption triggers costly shutdowns
- Chemical & Petrochemical Facilities – Continuous-process plants demanding IEC 61511 SIL-rated power integrity
- Power Generation & Utilities – Turbine control panels and SCADA cabinets requiring hot-standby redundancy
- Pulp, Paper & Mining Operations – High-vibration, high-humidity environments with 24/7 uptime requirements
- Pharmaceutical Manufacturing – FDA-regulated lines where validated power continuity is mandatory
Technical Specifications
- Part Number: 2MLR-AC12
- Manufacturer: Honeywell Process Solutions
- Series: Redundant Power Supply (2MLR Series)
- Input Voltage: 100–240 VAC, 50/60 Hz (universal AC input)
- Output Voltage: 24 VDC regulated
- Redundancy Architecture: 1+1 hot-standby, automatic failover <20 ms
- Form Factor: DIN-rail / rack-mount module
- Weight: 326 g
- Operating Temperature: 0 °C to +60 °C
- Protection: Over-voltage, over-current, short-circuit, reverse-polarity
- Isolation: Reinforced input-to-output galvanic isolation
- Status Indication: LED fault and OK indicators; dry-contact alarm relay output
- Compatibility: Honeywell TDC 3000, Experion PKS, HC900 controller families
Why Engineers Specify This Model
- True Hot-Standby Redundancy – Both modules operate simultaneously; load transfers instantaneously on primary failure with zero process interruption
- Universal AC Input – Accepts 100–240 VAC globally, eliminating transformer requirements in multi-region deployments
- Compact Footprint – Optimized for high-density control cabinets; minimal rack space consumption
- Alarm Integration – Dry-contact relay output integrates directly with plant DCS alarm management systems
- Long Service Life – Industrial-grade capacitors and conformal-coated PCB rated for harsh ambient conditions
- Drop-in Replacement – Backward-compatible with existing 2MLR-series slots; no firmware changes required
Complete System Bill of Materials
For a fully redundant Honeywell power supply assembly, engineers typically specify:
- 2× Honeywell 2MLR-AC12 – Redundant AC PSU modules (primary + standby)
- 1× Honeywell 2MLR-BASE – Redundancy base / load-sharing chassis
- 1× Honeywell 2MLR-DIODE – Oring diode module (if not integrated in base)
- Appropriate DIN-rail mounting hardware and 24 VDC distribution terminal blocks
- Shielded AC input wiring per IEC 60364-4-41
Contact Konmask.com for complete BOM sourcing and cross-reference support.
Compliance & Industry Standards
- CE Marking – EU Low Voltage Directive 2014/35/EU
- UL 508 – Industrial Control Equipment
- IEC 61131-2 – Programmable Controllers Power Supply Requirements
- IEC 61511 – Functional Safety (SIL-capable power architecture)
- RoHS 2 Compliant – Directive 2011/65/EU
- ATEX / IECEx – Consult factory for hazardous-area installation guidance
Quality Assurance & Sourcing
Every Honeywell 2MLR-AC12 unit shipped by Konmask.com undergoes the following verification process:
- Visual inspection against Honeywell OEM reference standards
- Label, date-code, and serial-number authenticity check
- Functional power-on test at rated load prior to dispatch
- Anti-static packaging with humidity indicator card
- Traceable supply chain documentation available on request
We source from authorized distributors, certified surplus channels, and direct OEM partnerships to ensure genuine parts with full traceability.
How to Source This Part
- Request a Quote: Email support@konmask.com with your required quantity and delivery timeline
- Phone / WhatsApp: +0086 19859288691 (Mon–Sat, 08:00–18:00 CST)
- Lead Time: In-stock units ship within 1–3 business days; ex-stock orders confirmed within 24 hours
- MOQ: 1 unit – no minimum order quantity
- Payment: T/T, PayPal, credit card, and LC accepted
- Export: Worldwide shipping via DHL / FedEx / UPS with full customs documentation
Application-Specific FAQ
Q: Can the 2MLR-AC12 replace an older 2MLR-AC10 in an existing rack?
A: Yes. The 2MLR-AC12 is backward-compatible with 2MLR-series bases. Verify slot keying and connector pinout before installation.
Q: What happens if one module fails in a redundant pair?
A: The standby module assumes full load within <20 ms. A dry-contact alarm output simultaneously signals the DCS/SCADA for maintenance dispatch.
Q: Is this module suitable for SIL 2 safety loops?
A: The 2MLR-AC12 supports SIL-capable power architectures per IEC 61511. Consult your functional safety engineer for full SIL assessment documentation.
Q: Do you provide a warranty?
A: Yes – 12-month warranty against manufacturing defects. Extended warranty and exchange programs available; contact us for details.
Q: Can I get a datasheet or installation manual?
A: Yes. Request the Honeywell 2MLR-AC12 datasheet and installation guide via support@konmask.com.
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