Brand: Allen Bradley Description: Controller Condition: Brand New Certificate: COO TEST REPORT WARRANTY LETTER Warranty: 1 year Inventory Qty: 4 Payment Term: T/T Shipping Port: Shenzhen Allen Bradley 1756-L55M22 is primarily used for logic control, data processing, and equipment coordination in industrial automation systems, supporting complex control tasks and suitable for scenarios requiring high reliability and non-volatile data storage. It is compatible with racks, power supplies, and communication modules within the series and can be integrated into large distributed control systems.
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Manufacture |
Allen Bradley |
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Model Number |
1756-L55M22 |
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Ordering Number |
1756-L55M22 |
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Catalog |
ControlLogix |
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Country Of Origin |
Switzerland |
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HS CODE |
8543709990 |
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Dimension |
14*14*10cm |
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Weight |
0.6kg |
Product Features
Allen Bradley 1756-L55M22 is equipped with a 1756-M22 non-volatile memory board, with 750 KB of data and logic memory and 208 KB of non-volatile memory, enabling stable storage of programs, configuration parameters, and historical data to prevent data loss due to power outages.
Allen Bradley 1756-L55M22 supports functionality expansion via firmware upgrades, requiring a minimum firmware version of 10.x or higher, and is compatible with RSLogix 5000 software (v10.0 and above).
Allen Bradley 1756-L55M22 supports RIUP, allowing installation or removal while the rack is powered. However, in hazardous locations, power must be disconnected or the area confirmed safe to prevent arc-induced explosions.
Allen Bradley 1756-L55M22 is equipped with multi-state indicator lights (RUN, I/O, FORCE, RS232, BAT, OK) to provide real-time feedback on operating mode, communication status, battery level, and fault information (the OK light solid green indicates normal operation, while solid red indicates an unrecoverable fault).
Allen Bradley 1756-L55M22 supports diagnosis and clearance of major faults and non-recoverable faults. Fault codes can be viewed via RSLogix 5000 software, or major faults can be cleared using a key switch sequence (PROG-RUN-PROG).
Product Working Principle
Allen Bradley 1756-L55M22 must first install the ControlLogix rack and power supply to ensure stable power supply to the rack.
The 1756-M22 memory board must be installed after powering off and disconnecting the battery. Use a #2 Phillips screwdriver to remove the controller side cover, align the interface, insert it, and then replace the side cover. Wear a grounding wrist strap throughout the process to prevent static damage.
Allen Bradley 1756-L55M22 uses a 1756-BA1 battery, which must be replaced regularly based on ambient temperature (e.g., every 3 years at 36-40°C). When installing, distinguish between positive and negative terminals (+ connects to red, - connects to black) and record the replacement date.
Control programs are written using RSLogix 5000 software, downloaded to the controller, and executed in Run mode to drive I/O devices. Non-volatile memory (1756-M22) is used to store the program and configuration during power outages.
Product Parameter
The following detail is for Allen Bradley 1756-L55M22 Controller.
Operating temperature: 0-60°C (32-140°F)
Storage temperature: -40-85°C (-40-185°F)
Relative humidity: 5-95% (non-condensing)
Vibration: 2 g @ 10-500 Hz (compliant with IEC 60068-2-6 standard)
Shock: 30 g (operating state), 50 g (non-operating state, compliant with IEC 60068-2-27 standard)
Data and logic memory: 750 KB
Non-volatile memory: 208 KB
Backplane current: 1.23 A at 5.1V DC, 0.014 A at 24V DC
Power dissipation: 5.6 W
Thermal dissipation: 19.1 BTU/hr
