Overview
The Allen-Bradley 1747-L524 is an SLC 500 processor, also referred to as an SLC 5/02 controller, with maximum memory of 4K for instructions and a maximum of 4096 modules each for discrete input and output. This processor belongs to the SLC 500 Modular Hardware by Allen-Bradley and represents a modular, sealed CPU solution for industrial control systems requiring mid-range processing capacity and extensive I/O support.
Key Features
- Built-in DH-485 communication channel for peer-to-peer communication
- Implements Proportional + Integral + Derivative (PID) algorithm for closed loop and automatic control applications
- Supports analog, digital, scanner module, specialty and intelligent IO modules
- Front panel LED indicators for monitoring CPU operating mode, CPU Fault status, IO Forcing, Communication status and Battery Voltage
- Supports address indexing, process and program interrupts, user defined fault routines and 32-Bit signed arithmetic operations
- Single slot module that occupies Slot Zero (0) of the SLC 500 chassis
Technical Specifications
- 4K instructions program memory with built-in DH485 communication interface
- IO capacity of 4096 Discrete I/O
- 4096 input points, 4096 output points with 480 Analog I/O
- Maximum of 480 local Analog I/O and maximum local chassis/slot configuration of 3/30
- Supported scanner modules: DeviceNet, ControlNet, and Universal Remote I/O
- Front-panel mounted battery with convenient replacement while power is supplied via backplane
Typical Applications
This modular processor is designed for industrial automation systems, providing extensive I/O support and advanced control features for various applications. The 1747-L524 is suitable for manufacturing control, process automation, machine integration, and systems requiring mid-range processing with flexible I/O expansion. The integrated DH485 communication enables data exchange with HMI, SCADA and 3rd party automation systems, and can be used for messaging other Allen-Bradley controllers such as PLC 5, CompactLogix and ControlLogix.
Compatibility & Replacements
Compatible With
- SLC 500 modular chassis
- DeviceNet scanner modules
- ControlNet scanner modules
- Universal Remote I/O systems
- Allen-Bradley PLC-5 networks (via messaging)
- CompactLogix and ControlLogix controllers (for peer-to-peer communication)
Replaces / Drop-In Replacement For
The 1747-L524 is the only controller variant under the SLC 5/02 controller category. No direct drop-in replacements exist; however, the SLC 5/01 (1747-L511) represents a prior generation with reduced capabilities, while the SLC 5/03 (1747-L532) provides enhanced performance for more demanding applications.
Works With
- SLC 500 programming software and Allen-Bradley APS (Allen-Bradley Programming Software)
- Optional EEPROM modules (1747-M1, 1747-M2) for data backup and retention
- Optional UVPROM modules (1747-M3, 1747-M4) for program storage
- DH-485 communication networks
- Remote I/O and DeviceNet integration
