Product Details
Overview
The 1785-MJ by Allen-Bradley is a dedicated memory module designed for PLC-5 systems, providing secure program backup and reliable data storage. Optimized for standard PLC-5 processors, it ensures consistent system operation and safeguards critical control programs.
Technical Specifications
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Model: 1785-MJ
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Module Type: Memory Module
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Memory Capacity: 8K Words (6K SRAM usable)
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Write Protection: Removable jumper for added data security
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Primary Function: Program backup for PLC applications
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Supported Processors: Standard PLC-5 series
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Backplane Power Requirement: 2.5 A at 5 V DC
Compatibility
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PLC-2/17 Series: 1772-LW, 1772-LWP
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PLC-5 Series: 1785-LT (10), 1785-LT2 (12), 1785-LT3 (15), 1785-LT4 (25)
Environmental Conditions
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Operating Temperature: 0° to 60° C (32° to 140° F)
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Storage Temperature: –40° to 85° C (–40° to 185° F)
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Relative Humidity: 5–95% (non-condensing)
Size & Weight
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Dimensions: 2.18L x 1.73H x 0.69D in (55.4 x 43.9 x 17.4 mm)
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Weight: Approx. 0.34 kg
Additional Features
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Designed for secure program backup in PLC-5 systems
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No removal under power (RIUP) capability
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Compact form factor fits standard PLC-5 backplane
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Reliable SRAM ensures stable performance under industrial conditions
Applications
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Industrial PLC-5 automation systems
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Program backup and memory extension
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Control system redundancy and protection
FAQ
Q: Can this module be used in PLC-5 processors of all memory sizes?
A: Yes, it is compatible with all standard PLC-5 series processors.
Q: Does it support hot-swapping?
A: No, removal under power is not supported.
Q: What type of memory does it use?
A: It uses SRAM with write-protection jumper for secure backup.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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