PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1764-RTC MicroLogix 1500 Real-Time Clock Module (RTC Module) provides accurate system time and date tracking. It operates as an accessory module for scheduled control operations. The hardware includes an integrated, non-replaceable battery. This battery maintains continuous clock operation for at least five years under rated operating conditions.
The unit features an IP20 rated enclosure for industrial environments. It supports removal and insertion under power during operational maintenance routines. Diagnostic monitoring tracks battery voltage levels directly through the RTC:0/BL status file bit. The module delivers precise clock performance across specified industrial temperature ranges.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Clock Accuracy (0°C / +32°F) | +34 to -70 seconds/month |
|---|
| Clock Accuracy (+25°C / +77°F) | +36 to -68 seconds/month |
|---|
| Clock Accuracy (+40°C / +104°F) | +29 to -75 seconds/month |
|---|
| Clock Accuracy (+55°C / +131°F) | -133 to -237 seconds/month |
|---|
| Battery Type | Built-in, non-replaceable |
|---|
| Battery Operating Life Expectancy | 5 years minimum at 0°C to +40°C (+32°F to +104°F) |
|---|
| Battery Storage Life Expectancy | 5 years minimum at -40°C to +25°C; 3 years minimum at +26°C to +60°C |
|---|
| Battery Low Status File | RTC:0/BL |
|---|
| Enclosure Rating | IP20 |
|---|
| Removal and Insertion Under Power | Supported |
|---|
| Output Source | Relay Port and DC FET |
|---|
| UPC | 662468995658 |
|---|
TECHNICAL INFORMATION
Features
- Provides accurate time and date tracking for scheduled MicroLogix 1500 operations.
- Contains an integrated non-replaceable battery with a five-year operating life expectancy.
- Supports removal and insertion under power during operational maintenance.
- Monitors internal battery condition using status file bit RTC:0/BL.
- Provides standard IP20 environmental enclosure protection.
TECHNICAL INFORMATION
Applications
- Scheduling operations and time-referenced control tasks in MicroLogix 1500 systems.
TECHNICAL INFORMATION
Connections / Interfaces
- Dedicated interface for MicroLogix 1500 controller systems.
- Internal register connection to status file bit RTC:0/BL.
TECHNICAL INFORMATION
Installation Guidelines
- Install the module into the designated slot on the MicroLogix 1500 controller.
- Ensure the module is fully seated before initiating system operation.
- Removal and insertion under power is supported during maintenance procedures.
TECHNICAL INFORMATION
Configuration Guidelines
- Access clock registers directly within controller program files.
- Monitor bit RTC:0/BL in ladder logic to detect a depleted internal battery.
TECHNICAL INFORMATION
Compatibility
- Allen-Bradley MicroLogix 1500 controllers.
TECHNICAL INFORMATION
Lifecycle / Replacement Information
- Rockwell Automation classifies the 1764-RTC lifecycle status as discontinued and obsolete.
- The internal battery cannot be replaced; full module replacement is required upon depletion.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSAllen-Bradley MicroLogix 1500 controllers.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
Can the battery in the Allen-Bradley 1764-RTC module be replaced?
No, the battery in the 1764-RTC is built-in and non-replaceable. The entire module must be replaced once the battery is depleted.
Does the 1764-RTC module support removal and insertion under power?
Yes, the 1764-RTC module supports removal and insertion under power on compatible MicroLogix 1500 controllers.
How does the controller indicate a low battery on the 1764-RTC?
The controller monitors battery health directly using status file bit RTC:0/BL.
