The Allen-Bradley 1769-L35CR is a high-performance CompactLogix controller with integrated ControlNet communication. It is designed for applications requiring deterministic, scheduled data exchange and high-speed I/O synchronization.
The controller supports complex control architectures with up to 30 local 1769 I/O modules distributed across three expansion banks. For proper power distribution and signal integrity, the controller must be installed within four slots of the system power supply.
| Parameter | Specification |
|---|---|
| Controller Type | CompactLogix Processor |
| User Memory | 1.5 MB Non-volatile Flash |
| Communication Ports | 1 × ControlNet (BNC), 1 × RS-232 (DF1 / ASCII) |
| Expansion Capacity | Up to 30 Compact 1769 I/O modules |
| I/O Bank Support | Maximum 3 banks via 1769 expansion cables |
| Backplane Current Draw | 680 mA @ 5.1 V DC |
| Power Dissipation | 4.36 W |
| Operating Temperature | 0 to 60 °C (32 to 140 °F) |
| Vibration Resistance | 5 G @ 10–500 Hz |
| Shock Rating | 20 G (Operating), 30 G (Non-operating) |
| Mounting | DIN Rail or Panel |
| Weight | 0.37 kg |
The 1769-L35CR is built on the Logix control engine, enabling a common programming environment across multiple Allen-Bradley controller families.
It features battery-backed RAM for data retention during power loss and supports serial programming via 1756-CP3 or 1747-CP3 cables.
Its rugged construction ensures stable operation in industrial environments with demanding thermal, vibration, and humidity conditions.
Can multiple 1769-L35CR controllers be installed in the same local chassis?
No. Only one controller can be active in a local 1769 I/O bank. Multiple controllers may communicate over ControlNet, but each must control its own dedicated I/O configuration.
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