The Allen-Bradley 1756-L1M2 is a ControlLogix 5550 controller processor module. It provides 1 MB of user-available memory without nonvolatile memory. The module is designed to control local and remote I/O across DeviceNet, ControlNet, and Universal Remote I/O networks. Built with an open-style enclosure, it features Group 1, Class A emissions.
The 1756-L1M2 features an average power dissipation of 4.8 W and an average thermal dissipation of 16.4 BTU/hr. It operates with an average backplane current of 1.05 A at 5V DC and 0.02 A at 24V DC. The controller supports serial communications using 1756-CP3 or 1747-CP3 programming cables and relies on a 1756-BA1 0.59g lithium battery for memory backup.
| Parameter | Value |
|---|---|
| Manufacturer | Allen-Bradley |
| Category | PLCs |
| Product Line | ControlLogix |
| Part Number | 1756-L1M2 |
| Module Type | Processor Module |
| User Available Memory | 1 MB |
| Expansion Memory | 1 MB |
| Enclosure Type | Open |
| Isolation Voltage | 30V Continuous (Tested to withstand 500V for 60 seconds) |
| Operating Temperature | 0 to 60 degC (32 to 140 Fahrenheit) |
| Storage Temperature | -40 to 85 degC (-40 to 185 Fahrenheit) |
| Relative Humidity | 5% to 95% noncondensing |
| Minimum Operating Current | 2 mA at 10V DC |
| Maximum Operating Current | 3.5 mA at 30V DC |
| Maximum Input Current (Off-State) | 1.5 mA |
| Peak Backplane Current (+5V DC) | 1.05 A |
| Peak Backplane Current (+24V DC) | 0.02 A |
| Average Power Dissipation | 4.8 W |
| Maximum Power Dissipation | 4.1 W at 60 degC |
| Average Thermal Dissipation | 16.4 BTU/hr |
| Vibration | 10 to 500 Hz, 2.0 G maximum peak acceleration |
| Operating Shock | 30 G peak for 11 ms |
| Storage Shock | 50 G peak for 11 ms |
| Conducted RF Immunity | 10Vrms with 1 kHz sine-wave 80%AM from 150 kHz to 80 MHz |
| ESD Immunity | 6 kV contact discharges, 8 kV air discharges |
| EFT/B Immunity | +/-2 kV at 5 kHz on communication ports, +/-4 kV at 2.5 kHz on power ports |
| Radiated RF Immunity | 10V/m with 200 Hz 50% Pulse 100%AM at 900 MHz; 10V/m with 1 kHz sine-wave 80%AM from 30 MHz to 1000 MHz |
| Programming Cable | 1756-CP3 or 1747-CP3 serial cable |
| Battery | 1756-BA1 (0.59g lithium) |
| Weight | 12.5 oz. (0.35 kg) |
| UPC | 10612598180988 |
Global Express Shipping
Returns & Warranty
Manufacturer: Allen-Bradley
Product No.: 1756-L1M2
Country of origin:United States
Product Type: Processor Module
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 350g
Dimensions: 145 mm x 35 mm x 135 mm (H x W x D)
Shipping port: Xiamen
Warranty: 12 months
The Allen-Bradley 1756-L1M2 is a ControlLogix 5550 controller processor module. It provides 1 MB of user-available memory without nonvolatile memory. The module is designed to control local and remote I/O across DeviceNet, ControlNet, and Universal Remote I/O networks. Built with an open-style enclosure, it features Group 1, Class A emissions.
The 1756-L1M2 features an average power dissipation of 4.8 W and an average thermal dissipation of 16.4 BTU/hr. It operates with an average backplane current of 1.05 A at 5V DC and 0.02 A at 24V DC. The controller supports serial communications using 1756-CP3 or 1747-CP3 programming cables and relies on a 1756-BA1 0.59g lithium battery for memory backup.
| Parameter | Value |
|---|---|
| Manufacturer | Allen-Bradley |
| Category | PLCs |
| Product Line | ControlLogix |
| Part Number | 1756-L1M2 |
| Module Type | Processor Module |
| User Available Memory | 1 MB |
| Expansion Memory | 1 MB |
| Enclosure Type | Open |
| Isolation Voltage | 30V Continuous (Tested to withstand 500V for 60 seconds) |
| Operating Temperature | 0 to 60 degC (32 to 140 Fahrenheit) |
| Storage Temperature | -40 to 85 degC (-40 to 185 Fahrenheit) |
| Relative Humidity | 5% to 95% noncondensing |
| Minimum Operating Current | 2 mA at 10V DC |
| Maximum Operating Current | 3.5 mA at 30V DC |
| Maximum Input Current (Off-State) | 1.5 mA |
| Peak Backplane Current (+5V DC) | 1.05 A |
| Peak Backplane Current (+24V DC) | 0.02 A |
| Average Power Dissipation | 4.8 W |
| Maximum Power Dissipation | 4.1 W at 60 degC |
| Average Thermal Dissipation | 16.4 BTU/hr |
| Vibration | 10 to 500 Hz, 2.0 G maximum peak acceleration |
| Operating Shock | 30 G peak for 11 ms |
| Storage Shock | 50 G peak for 11 ms |
| Conducted RF Immunity | 10Vrms with 1 kHz sine-wave 80%AM from 150 kHz to 80 MHz |
| ESD Immunity | 6 kV contact discharges, 8 kV air discharges |
| EFT/B Immunity | +/-2 kV at 5 kHz on communication ports, +/-4 kV at 2.5 kHz on power ports |
| Radiated RF Immunity | 10V/m with 200 Hz 50% Pulse 100%AM at 900 MHz; 10V/m with 1 kHz sine-wave 80%AM from 30 MHz to 1000 MHz |
| Programming Cable | 1756-CP3 or 1747-CP3 serial cable |
| Battery | 1756-BA1 (0.59g lithium) |
| Weight | 12.5 oz. (0.35 kg) |
| UPC | 10612598180988 |
| Product Image | Model Number / Title | Condition | Availability | Action |
|---|---|---|---|---|
|
ABB 1SAP131000R0278 PM5630-2ETH AC500 Processor Module | Original New | In Stock | View Details |
|
Allen-Bradley 1756-L85EPXT ControlLogix 5580 Process XT Controller | Original New | In Stock | View Details |
|
Allen-Bradley 1756-L75 ControlLogix 5570 Controller | Original New | In Stock | View Details |
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Color pattern |
Black
|
| Country of origin |
United States
|
| Power source |
DC Power
|
Replacing a 1756-L73 does not automatically mean upgrading its firmware. This guide compares v19.013, v21.011 and v31.011, focusing on project compatibility, HMI communications, legacy networks and...
Implement a 3-SPST switch XOR light circuit in LogixPro or RSLogix 500 using an internal relay bit. Includes truth tables, boolean equations, and verified.
Integrate Allen-Bradley CompactLogix, Caterpillar ATS, and generators into DeltaV DCS over Modbus RTU. Covers ProSoft MVI69-MCM, Miille DIN266 gateways.
ONS instruction fires but the OTE coil never latches in Studio 5000 because the one-shot is only true for one scan. Use OTL/OTU or seal-in logic instead.
Configure Allen-Bradley Kinetix 5500 servo drives on EtherNet/IP. Covers CIP Sync, IEEE 1588 V2 timing, Stratix selection, DLR topology, and HMI.
A moving-average filter is the sliding-window smoother most instrument engineers drop into DCS and PLC analog paths. Here is how the window works, how N and sample time set lag, and when a...
