Manufacturer: Rockwell Automation
Brand: Alan Bradley
Part Number/Catalog number :1756-L55M14 series
Series :ControlLogix
Module type: Processor module
The Allen-Bradley 1756-L55M14 is a ControlLogix 5555 controller. The A-Series controller has 3.5 MB of available data and logic memory and 208 KB of I/O memory. It should be noted that the 1756-L55M14 controller has no non-volatile memory.
The controller is located in the ControlLogix 1756 enclosure and has an open housing. The controller itself weighs 0.36 kg or 12.8 ounces. Its battery can be replaced with a 1756-BA1 lithium battery. You should remember to replace the battery of the controller only when necessary. The only serial cables compatible with the 1756-L55M14 controller are the 1756-CP3 or 1747-CP3 cables.
The controller is capable of supporting various communication modes such as SynchLink, DH-485, Modbus through Ladder routines, Universal Remote I/O Serial, Data Highway Plus, DeviceNet, ControlNet and EtherNet/IP. It can also be used in redundant systems, as long as you pair it with the same controller and it is in the same ControlNet network.
The backplane current of the 1756-L55M14 controller is 1.25 A (5.1V DC), and 0.14 A at 24V DC.
It has a power consumption of 5.7 W and a thermal dissipation of 19.4 BTU/hr. The controller has been tested to withstand 60 seconds of up to 707V DC and has a continuous isolation voltage of 30V, a basic insulation type. It has conducted RF immunity of 10V rms and 1 kHz sine wave 80% AM in the range of 150 kHz to 80 MHz.
The 1756-L55M14 controller operates from 0 to 60 degrees Celsius. It is stored at a temperature of -40 to 85 degrees Celsius. It has a non-condensing relative humidity ranging from 5% to 95%. The controller also has a 30 g operating shock and a 50 g non-operating shock. At 2 to 10 Hz, its vibration is 500 g.
