The Allen-Bradley 1747-L30C, also cataloged as the 1747-L30C Processor Unit, operates as a fixed hardware PLC controller for executing application logic and local I/O processing within SLC 500 control platforms.

Model Identification

The 1747-L30C is a Series C fixed hardware style PLC processor unit with integrated 30 I/O points and a 100/240 VAC power input configuration. The unit provides local control execution through the SLC architecture and is designed for fixed I/O applications.

Hardware Specifications

Industrial Control Architecture

The 1747-L30C operates as a fixed SLC 500 controller without modular processor replacement capability. The processor executes stored control instructions and manages connected field signals through its integrated I/O structure.

The SLC 500 platform uses defined processor memory mapping and controller-based execution. Application configuration and maintenance procedures depend on the installed firmware revision and the connected programming environment.

Firmware and Control Execution

The processor unit maintains control operation through internal firmware execution and fixed hardware configuration. Firmware flash compatibility and processor revision control must be verified when integrating replacement units into existing SLC 500 installations.

The fixed I/O design limits expansion flexibility compared with modular SLC 500 chassis systems. System modification requires verification of existing wiring, addressing, and application logic compatibility.

Ordering Info

• 1 x Allen-Bradley 1747-L30C Processor Unit Series C
• 1 x Processor housing assembly
• 1 x Factory-installed controller hardware
• 1 x Fixed 30 I/O controller configuration

Field Installation Guidelines

Module Mounting

• Install the processor unit according to the original SLC 500 system mounting arrangement.
• Remove control power before disconnecting or replacing the controller.
• Verify terminal connections and mechanical mounting before energizing the system.

Electrical Wiring

• Confirm 100/240 VAC supply wiring matches the controller requirements.
• Separate control wiring from high-voltage power cables to reduce electrical interference.
• Check grounding and shielding practices according to industrial cabinet standards.

Maintenance Checks

• Verify controller status indicators during commissioning.
• Confirm application compatibility before transferring programs.
• Inspect wiring terminals periodically for mechanical looseness.

Frequently Asked Questions

• What type of controller is the 1747-L30C?

The 1747-L30C is a fixed hardware PLC processor unit from the SLC 500 Series with integrated 30 I/O points.

• What power input does the 1747-L30C use?

The controller is specified for 100/240 VAC operation with 50/60 Hz frequency input.

• Does the 1747-L30C support modular I/O expansion?

No. This model uses a fixed hardware style with integrated I/O configuration rather than modular chassis expansion.

• How many I/O points are available on this processor unit?

The 1747-L30C provides 30 integrated I/O points for local control applications.

• Is the 1747-L30C part of the SLC 500 platform?

Yes. The unit belongs to the Allen-Bradley SLC 500 controller family.

• Can the processor be replaced without checking compatibility?

No. Replacement requires verification of hardware revision, wiring configuration, and application requirements.

• What programming environment is associated with SLC 500 controllers?

SLC 500 controllers are configured through Allen-Bradley programming tools compatible with the processor firmware.

• Does the 1747-L30C support hot swapping?

Hot swapping is not specified. Power should be removed before controller removal or installation.