Allen-Bradley 1785-L30B PLC-5/30 Controller 32K Memory

Technical Specifications Breakdown

Key parameters for the 1785-L30B are listed below for quick reference:

Industry Applications and Cost Benefits

For example, in a material handling system, its support for up to 28 universal remote I/O chassis reduces wiring costs and simplifies maintenance. In process control, the 32K words memory and complementary I/O (1024 inputs + 1024 outputs) allow handling complex recipes without upgrading to a larger controller. By using the built-in DH+ and Remote I/O ports, you avoid the expense of additional communication modules.

Installation and Setup Guidance

Mount the 1785-L30B in a 1771 chassis with a compatible power supply (1771-P4S, -P6S, -P4S1, or -P6S1). Ensure the backplane current load does not exceed 2.3 A. Use the three-position keyswitch to select RUN, PROG, or REM mode. For remote I/O, configure channel 1A or 1B as scanner or adapter via the programming software. The serial port (RS-232/422/423) supports DF1 and ASCII protocols for connection to HMIs or drives.

Maintenance and Reliability

Periodically inspect the BATT LED indicator. When illuminated, the battery (1770-XYC) retains memory for up to 5 days; replace it promptly to avoid data loss. Operate the controller within 0...60 °C to ensure reliable performance. The non-operating temperature range of –40...85 °C allows safe storage during seasonal shutdowns.

Cost-Effective Control with the Allen-Bradley 1785-L30B

In industrial automation, balancing performance with budget is critical. The Allen-Bradley 1785-L30B PLC-5/30 controller delivers proven reliability and scalability, helping you maximize operational ROI without overspending on unnecessary features. This controller is engineered for medium-to-large applications where uptime and flexibility directly impact your bottom line.

Compatibility and Integration

Its dual DH+/RIO ports support both scanner and adapter modes, enabling mixed topologies. For Ethernet connectivity, add a 1785-ENET module. The controller also accepts EEPROM modules (1785-ME16, -ME32, -ME64, -M100) for program backup.

Selection Guide and Purchasing Advice

When selecting the 1785-L30B, consider your I/O count and remote chassis requirements. For systems needing up to 1024 I/O points and 28 remote racks, this controller offers an optimal cost-performance ratio. AutoDCSTech stocks genuine Allen-Bradley 1785-L30B units with full traceability. Please verify current lifecycle status and availability with AutoDCSTech before ordering.