Product Details
Overview
The 1785-CHBM from Allen-Bradley is a hot-backup memory cartridge built for the PLC-5 series. It ensures uninterrupted operation by maintaining critical program and data memory during system faults. With non-volatile storage and robust shock resistance, this module enhances the reliability and resilience of your PLC systems.
Technical Specifications
-
Manufacturer: Rockwell Automation
-
Brand: Allen-Bradley
-
Part Number: 1785-CHBM
-
Module Type: Hot-Backup Memory Cartridge
-
Memory Capacity: 100 Kilowords (non-volatile user memory)
-
Compatible Processors: 1785-L40C15, 1785-L80C15
-
Bus Communications: Local PCI 2.3 compliant
-
Maximum Modules per System: 4
-
Shock Resistance: Up to 30 g
-
LED Indicators: One per channel for diagnostics and status
-
Coating: Conformal coated for environmental protection
-
Required External Power: None
-
Typical AC Signal Delay (Off): 29 ms ± 8 ms
-
Typical DC Signal Delay (Off): 30 ms ± 7 ms
-
Wiring Arm: 1771-WN
-
Dimensions: 4.5 × 12.4 × 6.3 in (115 × 317 × 160 mm)
-
Weight: 0.31 lbs (0.14 kg)
Applications
-
Continuous PLC-5 operations during power or system faults
-
High-reliability industrial control environments
-
Critical process backup for large PLC-5 networks
-
Replacement or upgrade for legacy hot-backup memory requirements
FAQ
Q: Does 1785-CHBM require an external power supply?
A: No, it draws power directly from the PLC-5 backplane.
Q: Which PLC-5 processors are supported?
A: Fully compatible with 1785-L40C15 and 1785-L80C15 processors.
Q: How much memory is available in this hot-backup cartridge?
A: 100 Kilowords of non-volatile memory for program and data storage.
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
Redundant Automation Systems: Ensuring Continuous Uptime in Critical Control Infrastructure
System reliability directly determines operational profitability across high stakes process industries. Modern industrial automation platforms must eliminate single points of failure to prevent catastrophic shutdowns. Deploying fault tolerant architecture safeguards complex facilities against unexpected hardware glitches, network disruptions, and maintenance outages.
Understanding Types of Noise in Electronic Circuits and Control Systems
Signal integrity directly determines measurement accuracy and loop stability across industrial automation environments. Electronic noise introduces unwanted stochastic interference into analog loops, sensor feedback lines, and digital fieldbus networks. Understanding how intrinsic electronic noise and external electromagnetic interference manifest allows control engineers to optimize signal conditioning and shield sensitive instrumentation effectively.
Why 24V DC Power Supplies Standardize Modern Industrial Automation
Industrial control cabinets worldwide rely on 24V DC as the universal power standard for field instrumentation, sensors, and controllers. Walk into any manufacturing plant, and you will find PLCs, human-machine interfaces (HMIs), and smart actuators running on extra-low voltage DC. Standardizing on 24V DC enhances operational safety, lowers cabinet footprint, and maintains steady control performance across factory networks.