The Allen Bradley 1756-L1M1 is a ControlLogix 5550 controller. A 500 Kbyte data and logic memory and a 150 Kbyte I/O memory are available for this particular module. It does not have a nonvolatile memory. The 1756-L1M1 weighs 12.5 oz or 0.35 kg.
This controller can be installed in any available slot of the chassis. It also has an open-style enclosure type rating.
The 1756-L1M1 controller has a battery that can be replaced. The 1756-BA1, which is a 0.59g lithium battery, is the only compatible replacement battery for it. Also, only the 1756-CP3 serial cable category 3 is the compatible programming cable for the 1756-L1M1.
It has a noncondensing relative humidity of 5% to 95%. The operating temperature range of the 1756-L1M1 controller is from 0 to 60 Degrees Celsius, while the storage temperature range is from -40 to 85 Degrees Celsius.
The 1756-L1M1 controller has a backplane current of 950 mA at 5.1V and 20 mA at 24V, and a module power of 5.33 W. It has an average power dissipation of 4.6 W and an average thermal dissipation of 15.6 BTU/hr.
Vibration of the 1756-L1M1 controller ranges from 10 to 500 Hz with a 2.0 G maximum peak acceleration. It has an operating shock of 30 G peak for 11 ms. Storage shock of the 1756-L1M1 is 50 G peak for 11 ms. It also has an isolation voltage of 30V and has been tested to withstand 500 Volts for 60 seconds.
It has an ESD immunity of 6 kV contact discharges and 8 kV air discharges. Its radiated RF immunity is 10V/m with 1 kHz sine-wave 80%AM from 30 MHz to 1000 MHz and 10V/m with 200 Hz 50% Pulse 100% AM at 900 MHz. The controller also has an EFT/B immunity of +/-4 kV at 2.5 kHz on power ports and +/-2 kV at 5 Hz on communication ports. It has a conducted RF immunity of 10Vrms with 1 kHz sine-wave 80%AM from 150 kHz to 80 MHz.
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| Manufacturer | Rockwell Automation |
| Brand | Allen Bradley |
| Part Number/Catalog No. | 1756-L1M1 |
| Series | ControlLogix |
| Module Type | Processor Module |
| Expansion Memory | 512 KB |
| Enclosure | Open |
| Isolation Voltage | 30 Volts Continuous |
| Operating Temperature | 32-140 Fahrenheit (0-60 Celsius) |
| Minimum Operating Current | 2 milliamps at 10 Volts DC |
| Maximum Operating Current | 3.5 milliamps at 30 Volts DC |
| Maximum Input Current, Off-State | 1.5 milliamps |
| Power Dissipation (Max) | 4.1 Watts at 60 degrees Celsius |
| Backplane Current at 5 Volts | 120 milliamps |
| Backplane Current at 24 Volts | 2 milliamps |
| Removeable Terminal Block(s) | 1756-TBCH, 1756-TBS6H |