Description:The Allen‑Bradley 2080‑MEMBAK‑RTC is a functional plug‑in module for the Micro800 series of programmable controllers, designed to provide dual‑purpose memory backup and real‑time clock (RTC) functionality. It adds a layer of data resilience and precise timekeeping to compact control systems, ensuring critical parameters and event timestamps are preserved during power cycles or outages.Application Scenarios:In a municipal water pumping station using a Micro850 controller, operators needed to maintain accurate daily flow logs and restart pumps at specific times after a grid failure. The facility experienced frequent brief power dips that corrupted the PLC’s internal memory and reset its clock. By installing the 2080‑MEMBAK‑RTC module, engineers secured a non‑volatile backup of pump run‑hours and setpoints. The integrated battery‑backed RTC ensured that even after a 48‑hour outage, the system rebooted with the correct time, allowing time‑based control logic to execute accurately without manual intervention, significantly reducing operational downtime.
Parameter:
| Parameter | Value / Description |
|---|---|
| Product Model | 2080‑MEMBAK‑RTC |
| Manufacturer | Rockwell Automation (Allen‑Bradley) |
| Product Category | Memory Backup & RTC Plug‑in Module |
| Compatible Controllers | Micro830, Micro850 (2080‑LC50), Micro870 |
| Memory Capacity | 1 MB non‑volatile flash (for project/data backup) |
| Real‑Time Clock | High‑accuracy RTC with battery backup |
| Battery Type | User‑replaceable 3V lithium (CR2032) |
| Battery Life | Approx. 1 year (data retention), up to 10 years (RTC) |
| Operating Temperature | -20°C to +65°C (-4°F to 149°F) |
| Mounting | Plug‑in slot on controller front (with retention screw) |
| Status Indication | LED indicator for battery/backup status |
| Certifications | UL, cULus, CE, RCM; CL I Div 2 |
Technical Principles and Innovative Values:
- Innovation Point 1: Dual‑Function Architecture. Unlike simple memory cards, the 2080‑MEMBAK‑RTC integrates a high‑precision real‑time clock circuit and a dedicated 1 MB flash memory bank into a single plug‑in form factor. This allows it to serve two critical roles simultaneously: preserving user programs, recipes, and data tables, while also maintaining accurate date/time information independent of the main controller’s power state.
- Innovation Point 2: Enhanced Data Resilience. The module operates as a “safety net” for critical machine data. It supports manual or automatic backup of controller projects, enabling rapid restoration in the event of a main memory corruption. This is particularly valuable for standalone machines without an always‑connected programming laptop, reducing mean time to repair (MTTR).
- Innovation Point 3: Hot‑Swap Capability (RIUP). Designed for minimal downtime, the module supports Removal and Insertion Under Power (RIUP) in non‑hazardous locations. This allows maintenance personnel to replace a depleted battery or swap the module without shutting down the entire control system, enhancing operational availability.
