Allen-Bradley 1756-L1M2 ControlLogix 5550 controller

The Allen-Bradley 1756-L1M2 is a ControlLogix 5550 controller. It has a 1 MB user available memory but it does not have a nonvolatile memory. It has the capacity to control local and remote I/O across DeviceNet, ControlNet, and Universal Remote I/O networks. It has an open-style enclosure type rating and weighs 0.35 g or 12.5 oz. This controller has Group 1, Class A emissions.

The 1756-L1M2 has an average power dissipation of 4.8 W and an average thermal dissipation of 16.4 BTU/hr. Its average backplane current at 5V DC is 1.05 A and 0.02 A at 24V DC.

Technical specifications for 1756-L1M2

ManufacturerRockwell Automation

BrandAllen-Bradley

Part Number/Catalog No.1756-L1M2

SeriesControlLogix

Module TypeProcessor Module

Expansion Memory1 MB

EnclosureOpen

Isolation Voltage30 Volts Continuous

Operating Temperature32-140 Fahrenheit (0-60 Celsius)

Minimum Operating Current2 milliamps at 10 Volts DC

Maximum Operating Current3.5 milliamps at 30 Volts DC

Maximum Input Current, Off-State1.5 milliamps

Power Dissipation (Max)4.1 Watts at 60 degrees Celsius

Backplane Current at 5 Volts120 milliamps

Backplane Current at 24 Volts2 milliamps

Removeable Terminal Block(s)1756-TBCH, 1756-TBS6H

The operating temperature of this controller ranges from 0 to 60 Degrees Celsius, while its storage temperature ranges from -40 to 85 Degrees Celsius. It also has a noncondensing relative humidity between 5% to 95%.

It has a vibration of 2 G maximum peak acceleration at 10 to 500 Hz, an operating shock of 30 G peak for 11 ms, and a storage shock of 50 G peak for 11 ms. It also has an isolated voltage of 30V and this controller has been tested to withstand 500 Volts for 60 seconds.

1756-L1M1

Allen Bradley ControlLogix Processor Module with 512 KB Expansion Memory

1756-L1M2

Allen Bradley ControlLogix Processor Module with 1 MB Expansion Memory

1756-L1M3

Allen Bradley ControlLogix Processor Module with 2 MB Expansion Memory