The 1768-L45 CompactLogix controller provides a powerful Logix platform. It delivers a cost-effective solution for medium-sized automation tasks. This processor handles complex motion, I/O, and network demands. Its integrated 3MB memory supports substantial application code. An optional CompactFlash card adds non-volatile storage. This controller is a reliable choice for system integrators.
Product Procurement & Buyer Guide
Engineering teams must verify system compatibility before purchasing. The 1768-L45 operates within a temperature range of 0° to +60°C (+32° to +140°F). It supports up to thirty 1769 I/O modules across three local banks. This controller also accommodates up to four 1768 expansion modules. Its isolated RS232 port communicates at speeds up to 38.4 Kbps. This port supports DF1 and DH485 protocols for flexible connectivity.
Procurement managers should note the power supply requirements. The controller draws 2.0 Amps at 24 Volts on the backplane. Total system consumption reaches 48.0 Watts maximum. The unit dissipates only 8.3 Watts of heat. This efficiency reduces thermal management needs inside the enclosure. The open-style enclosure suits most industrial control cabinets.
Installation planning requires specific hardware and cables. Use M4 or 8 screws for secure panel mounting. The recommended programming cable is the 1747-CP3 or 1756-CP3. This cable is three meters long with a right-angle connector. For network expansion, add 1768-ENBT or 1768-EWEB modules. These modules enable Ethernet communication and web server functionality.
The unit's physical footprint simplifies panel layout. Its dimensions are 131.6 x 67.4 x 121.8 mm. The controller weighs approximately 0.34 kilograms. Its compact size allows installation in tight spaces. The vibration rating is 5G at 10 to 500 Hertz. This robust design ensures reliable operation in demanding environments.
Step-by-Step User & Installation Guide
Begin by mounting the controller on a DIN rail or panel. Ensure the mounting surface is clean and stable. Use the specified M4 or 8 screws for a firm attachment. Do not overtighten the screws to avoid damage. Leave adequate space for air circulation and cable routing.
Next, connect the backplane power supply. Verify the supply delivers 24 Volts DC. The controller draws 2.0 Amps under full load. Check that the total backplane current does not exceed limits. For 1769 modules, the draw is 2.0 A at 5.7 Volts. For 1768 modules, the draw is 5.6 A at 5 Volts.
Then, establish communication with the embedded RS232 port. Use the 1747-CP3 or 1756-CP3 programming cable. Connect the right-angle end to the controller. Connect the straight end to your programming terminal. Configure the software for DF1 or DH485 protocol. Set the baud rate to a maximum of 38.4 Kbps.
After wiring, install the required communication modules. Insert up to two modules into the expansion slots. Use the 1768-ENBT for standard Ethernet connectivity. Use the 1768-EWEB for built-in web server access. Secure each module firmly to the backplane. Verify all connections before applying power.
Finally, power up the system and check for proper operation. Monitor the controller's status indicators. Confirm that all I/O modules are recognized. The system supports up to thirty modules in three banks. Test the serial communication link with your software. Perform a full system validation before production use.
Logistics & Standard Packaging Details
- One (1) Allen-Bradley 1768-L45 CompactLogix Controller
- Product series may be A or B
- Shipping weight is approximately 2 pounds
- Shipping dimensions are 8 x 8 x 5 inches
- Enclosure type is open for panel installation
- Express delivery shipping is available via FedEx, UPS, and DHL
