Purchase now: Allen Bradley 1746-R14 Processor Replacement Cover
Purchase now: Atlantechdrives provides you the 1746-R14, an essential mechanical replacement component designed by Allen Bradley exclusively for the SLC 500 processor series. Specifically, the 1746-R14 is the front plastic door/cover assembly for the advanced SLC 5/03, SLC 5/04, and SLC 5/05 CPU modules (such as the 1747-L532, 1747-L541, or 1747-L553). While it may seem like a simple cosmetic piece of plastic, this cover plays a critical role in the safety, compliance, and uninterrupted operation of your industrial control panel. In active manufacturing environments, original covers frequently get snapped off, lost, or broken during maintenance. Replacing a missing cover with the 1746-R14 restores the processor’s environmental defense and protects the sensitive communication ports from physical damage.
Technical Specifications of the 1746-R14
Manufactured from high-impact, flame-retardant industrial polycarbonate, the 1746-R14 snaps seamlessly onto the front of the processor module. It features integrated hinges and a molded clasp to stay securely shut despite the intense vibration found in heavy stamping or CNC environments.
- Part Number: 1746-R14
- Component Type: Processor Replacement Front Cover / Door
- Compatible Processors: SLC 5/03, SLC 5/04, SLC 5/05 (1747-L53x, 1747-L54x, 1747-L55x)
- Material: Industrial-grade flame-retardant polymer
- Primary Function: Physical protection of key switch and comm ports
- Secondary Function: ESD (Electrostatic Discharge) barrier
- Status: Discontinued by Manufacturer (Available as surplus/refurbished)
Expert Maintenance Advice: The Danger of a Missing Cover
Running an SLC processor without its front cover is an operational hazard. Expert Tip: The front face of the 5/03, 5/04, and 5/05 processors houses the multi-position physical key switch (RUN / REM / PROG). If the 1746-R14 cover is missing, a technician or operator reaching into the crowded control cabinet can easily bump the key switch with their sleeve or a tool. Instantly moving the PLC from «RUN» to «PROGRAM» mode will execute an immediate, uncontrolled shutdown of the entire factory line, causing massive product loss and mechanical collision risks. The 1746-R14 cover creates a physical barrier that prevents accidental mode changes. Furthermore, the cover protects the exposed RS-232, DH+, or Ethernet ports from conductive dust and accidental Electrostatic Discharge (ESD) from fingers, which can permanently fry the communication chips.
Restoring Panel Compliance
Beyond physical protection, control panels must meet strict UL508A and CE safety regulations. Having open, exposed circuitry or unprotected interface ports often leads to audit failures during safety inspections. Installing the 1746-R14 restores the module to its original factory condition, ensuring that the visual LED indicators are correctly framed and the internal circuit boards are shielded from ambient airborne contaminants.
Frequently Asked Questions (FAQs)
Q: Will the 1746-R14 fit my older SLC 5/01 or 5/02 processor?
A: No. The physical chassis of the older SLC 5/01 (1747-L511) and 5/02 (1747-L524) processors have a completely different front-face molding. The 1746-R14 is strictly molded to fit the deeper, multi-port design of the 5/03, 5/04, and 5/05 series.
Q: Can I install this cover while the PLC is powered on?
A: Yes. The 1746-R14 is a purely mechanical, non-conductive plastic component. It can be safely snapped into the hinge points on the processor module without turning off the panel power or stopping the machine.
Do you need more references from this brand? Explore our full catalog of Allen Bradley here.
This replacement relay set is essential for the long-term maintenance of your 1746-OW16 output module.
