2MLR-AC12 | Honeywell MasterLogic-200 Power Supply Module
The 2MLR-AC12 powers Honeywell MasterLogic-200 racks. It takes 110 VAC and delivers 5VDC at 5.5A for 27.5W at 55℃. A built-in non-replaceable fuse protects the input. A RUN contact and voltage status LED simplify diagnostics. The unit rides through 20 ms interruptions. Efficiency stays at 65% or higher. This is a proven PSU for legacy MasterLogic-200 installations and spare-parts programs.
Oiltech Controls Review
- Bench-tested output holds 5VDC ±2% under load.
- Inrush current stays at 20A peak within 8 ms.
- RUN contact response is 10 ms OFF→ON and 12 ms ON→OFF.
- Compact 55 x 95 x 90 mm body, 326g.
- Good choice for plants keeping MasterLogic-200 racks alive.
Oiltech Controls’s Insight: Where It Fits
- Honeywell MasterLogic-200 PLC racks.
- Legacy process control panels needing 5VDC bulk power.
- Systems with unstable AC mains — 20 ms ride-through helps.
- Retrofit and spare-part pools for obsolete control systems.
- Panels using RAV1.25-3.5 or RAV2-3.5 clamped terminals.
Input and Output Ratings
- Rated input: 110 VAC, range 85–132 VAC.
- Input frequency: 50/60 Hz (47–63 Hz).
- Max input power: 110 VA / 42 W.
- Inrush current: 20A peak, within 8 ms.
- Efficiency: 65% or higher.
- Output: 5VDC ±2%, 5.5A, 27.5W @ 55℃.
- Over-current protection: 6.0A–13.0A.
- Allowed instantaneous interruption: within 20 ms.
Protection and Diagnostics
- Built-in input fuse: 250V/3.15A time-lag, UL approved. Not user-replaceable.
- Voltage status LED lights when output is normal.
- RUN contact: 24VDC, 0.5A rated. Min load 5VDC, 1 mA.
- Mechanical life: 20 million operations or more.
- Electrical life: 100 thousand operations or more at rated current.
Wiring and Dimensions
- Cable spec: 0.75–2 mm².
- Clamped terminals: RAV1.25-3.5, RAV2-3.5.
- Dimensions: 55 x 95 x 90 mm (W x H x D).
- Weight: 326g.
- DC input variant also listed: 18–30 VDC, 125V/10A time-lag fuse.
Shipping, Warranty, and Support
- 12-month warranty on every unit.
- Ships in 24–28 hours.
- Carriers: FedEx, UPS, DHL.
- Technical verification before shipment.
- Support for obsolete control systems.
Professional FAQ
Can the 2MLR-AC12 run a partially loaded rack?
Yes. Output is 5.5A max. Add up 5VDC load per module before sizing. Keep total under 27.5W at 55℃ for continuous duty.
What happens if the input fuse blows?
The fuse is built in and not user-replaceable. The whole unit must be replaced. Check input wiring and inrush conditions first.
Why does my 2MLR-AC12 show low output?
Check AC input stays within 85–132 VAC. Verify load does not exceed 5.5A. Inspect terminals for looseness. Use RAV1.25-3.5 or RAV2-3.5 lugs only.
Is the RUN contact suitable for interlocking?
Yes, for light loads. Rated 24VDC at 0.5A. Minimum switching load is 5VDC at 1 mA. Do not use it to switch main contactors directly.
How do I choose between AC and DC input versions?
Pick the AC version for 110 VAC panels. Choose the DC version for 18–30 VDC feeds. Match your rack supply and fuse type before ordering.
Contact
Email: info@oiltechcontrols.com
Phone / WhatsApp: +86 158 8020 0923
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