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- Honeywell
- 2MLR-AC22
- Redundant Power Supply Module
- USA
- 55 × 95 × 110 mm
- 0.29 kg
- Xiamen, China
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Product Overview
The Honeywell 2MLR-AC22 is an AC 220 V redundant power supply module for the MasterLogic-200R PLC system. It converts incoming AC power into a regulated 5 V DC supply, delivering a rated output current of 5.5 A. The module is intended for redundant controller installations where maintaining power availability is an important part of the overall control system architecture.
In industrial process control, the power supply supports the operation of the CPU, communication interfaces, and installed control modules. A failure in the power supply can affect the operation of the entire PLC rack. The 2MLR-AC22 is used in redundant power arrangements to reduce dependence on a single power supply path.
The main distinction between the 2MLR-AC22 and the 2MLR-AC12 is the input voltage requirement. The AC22 accepts a rated AC 220 V input, whereas the AC12 is intended for AC 110 V installations. Both provide a 5.5 A output rating, making input voltage compatibility an important consideration during replacement and system configuration.
The module also includes overcurrent protection, an internal input fuse, a voltage status LED, and a RUN relay contact. These features support power system protection and provide an interface for external operating-status monitoring.
Typical applications include redundant PLC cabinets in chemical processing facilities, manufacturing plants, utility installations, and other industrial environments where the control system must maintain its power supply arrangement during abnormal operating conditions.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Honeywell |
| Model | 2MLR-AC22 |
| Product Type | Redundant Power Supply Module |
| Product Series | MasterLogic-200R |
| Rated Input Voltage | 220 VAC |
| Input Voltage Range | 176–264 VAC |
| Maximum Input Power | 176 VA / 72 W |
| Inrush Current | 80 A peak or lower |
| Efficiency | 65% or higher |
| Allowed Instantaneous Interruption | Within 20 ms |
| Input Fuse | Built-in, non-user-replaceable |
| AC Fuse Rating | 250 V / 3.15 A, time-lag type |
| Output Voltage | 5 VDC (±2%) |
| Output Current | 5.5 A |
| Output Power | 27.5 W @ 55°C |
| Overcurrent Protection | 6.0–13.0 A |
| RUN Contact Output | Relay Contact |
| Relay Rated Switching Voltage/Current | 24 VDC, 0.5 A |
| Minimum Switching Load | 5 VDC, 1 mA |
| Relay Response Time | OFF-to-ON: 10 ms or less; ON-to-OFF: 12 ms or less |
| Voltage Status Indicator | LED |
| Installation Position | Power section of basic or expansion base |
| Dimensions | 55 × 95 × 110 mm |
| Weight | 0.29 kg |
Product Features
1. AC 220 V Input Configuration
The 2MLR-AC22 is intended for installations using an AC 220 V power distribution system. Its specified input voltage range is 176–264 VAC, allowing it to operate within the designated supply range.
2. Regulated 5 V DC Output
The module converts the incoming AC supply into a regulated 5 V DC output with a tolerance of ±2%. This voltage supplies the associated MasterLogic-200R controller hardware.
3. 5.5 A Output Capacity
The rated output current is 5.5 A, corresponding to an output power of 27.5 W at 55°C. This capacity must be considered when calculating the combined power requirements of the installed PLC modules.
4. Redundant Power Architecture
The AC22 belongs to the MasterLogic-200R redundant power supply family. It can be incorporated into a redundant power arrangement intended to reduce the risk of PLC interruption following an individual power supply failure.
5. Built-In Input Fuse
The module includes an internal input fuse that is not user-replaceable. The AC input fuse specification is 250 V / 3.15 A with a time-lag characteristic.
6. Overcurrent Protection
The power supply incorporates overcurrent protection with a specified range of 6.0–13.0 A. This protection helps address abnormal current conditions affecting the DC output circuit.
7. RUN Contact Relay Output
An integrated RUN contact provides an external relay interface for power status monitoring. Its rated switching capacity is 24 VDC at 0.5 A, suitable for compatible monitoring and alarm circuits.
8. Voltage Status LED
The voltage indicator illuminates when the output voltage is normal. During commissioning, technicians can use this LED to check the power supply’s operating condition.
9. Input Interruption Tolerance
The specified allowable instantaneous input interruption is within 20 ms. This characteristic is relevant when evaluating the AC supply conditions in industrial control cabinets.
10. Basic and Expansion Base Installation
The module is installed in the designated power section of the applicable MasterLogic-200R basic or expansion base, forming part of the PLC system’s power distribution arrangement.
Working Principle
The 2MLR-AC22 receives AC 220 V from the external power distribution circuit and converts it into regulated 5 V DC for the MasterLogic-200R PLC system.
During operation, the internal power conversion circuit processes the incoming AC voltage and produces the DC output required by the controller hardware. The regulated output is distributed through the corresponding PLC base to supply the installed modules.
The 5.5 A output rating determines the available current capacity. When engineers configure a redundant PLC rack, they must calculate the combined consumption of the CPU, communication interfaces, and other installed modules. This calculation helps determine whether the selected power supply arrangement has sufficient capacity for the complete configuration.
The redundant power architecture provides an alternative power path so that the system can respond to a power supply failure. The controller monitors the relevant power failure status through the dedicated redundant power arrangement.
The RUN relay contact offers an additional external monitoring interface. It can be connected to a suitable alarm or monitoring circuit to make the power supply status available to the wider control system.
Typical Power Operation Sequence:
- AC 220 V is supplied to the 2MLR-AC22 input.
- The internal conversion circuit processes the incoming AC voltage.
- The module generates a regulated 5 V DC output.
- The output supplies the associated MasterLogic-200R system components.
- The voltage status LED indicates normal output voltage.
- The RUN relay contact provides a status interface for external monitoring.
- In a redundant configuration, the system monitors power supply conditions and responds to a detected failure according to its redundancy architecture.
Role in MasterLogic-200R Control Architecture
Within the MasterLogic-200R architecture, the 2MLR-AC22 supplies the DC power required by the redundant PLC hardware. It does not execute application logic or process field signals. Instead, it supports the electrical operation of the CPU, communication interfaces, and installed modules.
The ML200R platform uses dedicated redundant hardware configurations, including redundant CPUs, power supplies, and associated base and expansion interfaces.
The 2MLR-AC22 is the AC 220 V, 5.5 A option in this power supply family. It is particularly relevant to installations where the available cabinet power distribution is based on AC 220 V rather than AC 110 V.
| Component | Product Type | Function |
|---|---|---|
| 2MLR-AC12 | Redundant Power Supply Module | AC 110 V input, 5.5 A output |
| 2MLR-AC22 | Redundant Power Supply Module | AC 220 V input, 5.5 A output |
| 2MLR-AC13 | Redundant Power Supply Module | AC 110 V input, 8.5 A output |
| 2MLR-AC23 | Redundant Power Supply Module | AC 220 V input, 8.5 A output |
| 2MLR-DC42 | Redundant DC Power Supply Module | DC 24 V input, 7.5 A output |
| 2MLR-CPUH/T | Redundant CPU Module | Twisted-pair communication configuration |
| 2MLR-CPUH/F | Redundant CPU Module | Fiber-optic communication configuration |
| 2MLR-M02P | Main CPU Base | Two-module main base configuration |
| 2MLR-M06P | Main CPU Base | Six-module main base configuration |
| 2MLR-E08P | Expansion I/O Base | Eight-module I/O expansion |
| 2MLR-E12P | Expansion I/O Base | Twelve-module I/O expansion |
| 2MLR-E12H | Redundant Expansion I/O Base | Expansion with redundant interface support |
| 2MLR-DBST | I/O Interface Module | Twisted-pair communication |
| 2MLR-DBSF | I/O Interface Module | Fiber-optic communication |
| 2MLR-DBSH | Hybrid I/O Interface Module | Twisted-pair and fiber-optic communication |
Industrial Applications
| Application | Typical Use |
|---|---|
| Chemical Processing | Supplying power to redundant PLC control cabinets |
| Oil and Gas Facilities | Supporting continuous controller power arrangements |
| Power Generation | Maintaining power for plant automation hardware |
| Water Treatment Plants | Supporting redundant process control systems |
| Industrial Production Lines | Powering PLC hardware used in continuous manufacturing |
| Utility Automation | Supporting redundant controller installations |
| Centralized Control Rooms | Supplying power to MasterLogic-200R control racks |
| Process Manufacturing | Supporting controller operation in automated production environments |
Installation and Maintenance
- Verify Module Identification: Confirm that the installed unit is 2MLR-AC22 and distinguish it from the AC 110 V 2MLR-AC12 and higher-current variants.
- Check Input Voltage: Ensure that the incoming AC supply is compatible with the rated 220 V input and specified 176–264 VAC operating range.
- Inspect AC Input Wiring: Check the incoming power connections, terminal condition, and protective grounding arrangement before energizing the module.
- Calculate Power Consumption: Add the current requirements of the CPU and installed modules to verify that the 5.5 A output capacity is sufficient.
- Verify Redundant Configuration: Confirm that the module is installed as part of the intended MasterLogic-200R redundant power arrangement.
- Check Base Compatibility: Install the power supply in the designated power section of the applicable basic or expansion base.
- Inspect Input Protection: Check the external circuit protection arrangement and remember that the internal input fuse is not user-replaceable.
- Monitor Output Voltage: Observe the voltage status LED during startup and confirm that the DC output is operating normally.
- Check RUN Contact Wiring: Verify the external monitoring circuit and ensure that the relay contact remains within its specified switching ratings.
- Maintain Ventilation: Keep the installation area clear of obstructions and maintain the environmental conditions required by the PLC system.
- Investigate Power Abnormalities: If the output voltage is abnormal, inspect the AC input, system load, wiring, and protection conditions before replacing the module.
- Maintain Configuration Records: Document the power supply model, input voltage, output current calculations, and redundant power connections for future maintenance.
Compatible System Components
| Model | Product Description | Application |
|---|---|---|
| 2MLR-AC12 | MasterLogic-200R Redundant Power Supply, AC 110 V / 5.5 A | Alternative AC input configuration |
| 2MLR-AC13 | MasterLogic-200R Redundant Power Supply, AC 110 V / 8.5 A | Higher-current AC 110 V supply |
| 2MLR-AC23 | MasterLogic-200R Redundant Power Supply, AC 220 V / 8.5 A | Higher-current AC 220 V supply |
| 2MLR-DC42 | MasterLogic-200R Redundant Power Supply, DC 24 V / 7.5 A | DC input power arrangement |
| 2MLR-CPUH/T | Redundant CPU Module, Twisted-Pair Interface | Main PLC control processing |
| 2MLR-CPUH/F | Redundant CPU Module, Fiber-Optic Interface | Redundant controller processing |
| 2MLR-M06P | Main CPU Base | Main controller installation |
| 2MLR-E12P | Expansion I/O Base | I/O system expansion |
| 2MLR-E12H | Redundant Expansion I/O Base | Redundant expansion configuration |
| 2MLR-DBST | Twisted-Pair I/O Interface Module | Remote I/O communication |
| 2MLR-DBSF | Fiber-Optic I/O Interface Module | Fiber-optic I/O communication |
| 2MLR-DBSH | Hybrid I/O Interface Module | Combined communication interface |
| 2MLC-F201 | Multimode Fiber-Optic Sync Cable | Redundant system synchronization |
Recommended Related Models
| Model | Product Description |
|---|---|
| 2MLR-AC12 | MasterLogic-200R Redundant Power Supply Module, AC 110 V / 5.5 A |
| 2MLR-AC13 | MasterLogic-200R Redundant Power Supply Module, AC 110 V / 8.5 A |
| 2MLR-AC23 | MasterLogic-200R Redundant Power Supply Module, AC 220 V / 8.5 A |
| 2MLR-DC42 | MasterLogic-200R Redundant Power Supply Module, DC 24 V / 7.5 A |
| 2MLR-CPUH/T | MasterLogic-200R Redundant CPU Module, Twisted-Pair Interface |
| 2MLR-CPUH/F | MasterLogic-200R Redundant CPU Module, Fiber-Optic Interface |
Key Advantages
- Redundant power supply functionality for the MasterLogic-200R platform.
- Rated AC 220 V input.
- Input voltage range of 176–264 VAC.
- Regulated 5 V DC output.
- Rated output current of 5.5 A.
- Output power of 27.5 W at 55°C.
- Built-in input fuse protection.
- Integrated overcurrent protection.
- RUN contact relay output for status monitoring.
- Voltage status LED indication.
- Allowable instantaneous input interruption within 20 ms.
- Compatibility with the MasterLogic-200R redundant power architecture.
Technical FAQs
1. What is the difference between the 2MLR-AC22 and 2MLR-AC12?
The primary difference is the rated input voltage. The 2MLR-AC22 accepts AC 220 V with an operating range of 176–264 VAC, while the 2MLR-AC12 accepts AC 110 V with an operating range of 85–132 VAC. Both modules provide a rated 5.5 A output at 5 V DC.
2. Can the 2MLR-AC22 be used in a standard non-redundant MasterLogic-200 system?
The 2MLR-AC22 belongs to the MasterLogic-200R redundant power supply family. It should be selected for the corresponding redundant system architecture rather than treated as a direct replacement for standard 2MLP power supply modules.
3. What should be considered when replacing a 2MLR-AC22?
Check the incoming AC voltage, 5 V DC output requirement, 5.5 A current capacity, base compatibility, and redundant power configuration. A replacement with an AC 110 V variant may not be suitable for an installation supplied by AC 220 V.
4. How can the RUN contact be incorporated into a PLC monitoring arrangement?
The RUN contact can be connected to a compatible external monitoring or alarm circuit. Its rated switching capacity is 24 VDC at 0.5 A, and the external circuit should remain within this limit. The contact provides a separate status interface rather than supplying the PLC’s main operating power.