The Allen-Bradley 1768-L45 CompactLogix L45 Processor is a cornerstone of Rockwell Automation’s mid-range control architecture, engineered to manage complex processes with precision and reliability. Designed for applications requiring up to 16 axes of motion control and extensive I/O handling, this processor integrates Ethernet/IP and ControlNet connectivity directly on the module, eliminating the need for additional network interface cards. The 1768-L45 supports a maximum of 30 local I/O modules within a single 1768 chassis, and its 4 MB of user memory provides ample capacity for logic, data arrays, and communication buffers. With a robust operating temperature range and UL/cUL certifications, it is built to endure continuous operation in demanding industrial settings. Below is a comprehensive specification table derived from standard engineering references for this model.
| Parameter |
Specification |
| Manufacturer |
Rockwell Automation / Allen-Bradley |
| Product Type |
CompactLogix Programmable Automation Controller (PAC) |
| Model Number |
1768-L45 |
| Processor Type |
CompactLogix L45 |
| User Memory |
4 MB (for logic, data, and communication) |
| Non-Volatile Memory |
Removable CompactFlash (CF) card slot |
| Backplane Current Draw |
1.5 A at 5.1 V DC (typical) |
| Power Dissipation |
10.5 W maximum |
| Communication Ports |
1 x Ethernet/IP (RJ45), 1 x ControlNet (coaxial BNC) |
| Network Protocols |
EtherNet/IP, ControlNet, DeviceNet (via bridging) |
| Maximum Local I/O Modules |
30 modules in a single 1768 chassis |
| Maximum Remote I/O |
Expandable via network (subject to system limits) |
| Motion Control Axes |
Up to 16 axes (servo, stepper, or hydraulic) |
| Motion Update Rate |
1 ms to 10 ms (configurable) |
| Logic Execution Rate |
0.1 ms per 1K of ladder logic (typical) |
| Operating Temperature |
0°C to 60°C (32°F to 140°F) |
| Storage Temperature |
-40°C to 85°C (-40°F to 185°F) |
| Relative Humidity |
5% to 95% non-condensing |
| Vibration Resistance |
5 g at 10-500 Hz (operating) |
| Shock Resistance |
30 g (operating), 50 g (non-operating) |
| Enclosure Type |
Open-style, suitable for panel mounting |
| Certifications |
UL 508, CSA C22.2 No. 142, CE Mark, cULus |
| Weight |
Approximately 0.45 kg (1.0 lb) |
| Dimensions (H x W x D) |
120 mm x 85 mm x 70 mm (4.72 in x 3.35 in x 2.76 in) |
| Warranty |
Standard 2-year manufacturer warranty (subject to terms) |
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