1764-RTC
The Allen-Bradley 1764-RTC is MicroLogix 1500 Real-Time clock module. This is an accessory module that provides accurate time and date reference used for scheduling operations and application. This module come with a non-replaceable battery with operating temperature of 0°C to +40°C (+32°F to +104°F) and minimum operation of 5 years. This RTC has an accuracy of +34 to -70 seconds/month at 0°C (+32°F); +36 to -68 seconds/month at +25°C (+77°F); +29 to -75 seconds/month at +40°C (+104°F) and -133 to -237 seconds/month at +55°C (+131°F).
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Technical specifications for 1764-RTC
| Manufacturer | Rockwell Automation |
|---|---|
| Part Number/Catalog No. | 1764-RTC |
| Brand | Allen-Bradley |
| Product Type: | Real-Time Clock (RTC) module |
| RTC Accuracy | +34 to -70 seconds/month at 0°C or +32°F); +36 to -68 seconds/month at +25°C or +77°F); +29 to -75 seconds/month at +40°C or +104°F) and -133 to -237 seconds/month at +55°C or +131°F.U104 |
| RTC Battery operating expectancy | 5 years @ 0°C to +40°C (+32°F to +104°F) |
| RTC Battery storage expectancy | 5 years minimum @ -40°C to +25°C (-40°F to +77°F); 3 years minimum @ +26°C to +60°C (+79°F to +140°F) |
| RTC Battery: | Built-in |
| RTC Battery replacement: | Non-replaceable |
| Battery low status file: | (RTC:0/BL) |
| Removal and Insertion under power: | Supported |
| Memory size: | Not applicable |
| Series | MicroLogix 1500 |
| Function | RTC Module |
| Features | Real-Time Clock |
| Additional Features | Real-Time Clock |
| Enclosure Type | IP20 |
| Output Source | Relay Port and DC FET |
| Product Lifecycle Status* | Discontinued/Obsolete |
* The Allen Bradley 1764-RTC has been discontinued by the manufacturer, however we specialize in obsolete parts and can likely still supply surplus and/or refurbished replacement 1764-RTC units instead of migration.
The Allen-Bradley 1764-RTC is a Real-Time Clock (RTC) module that is used with MicroLogix 1500 controllers. This module is typically used to implement scheduled plant operation and processes, popular with Heating, Ventilation and Air Conditioning (HVAC) systems, Building Management systems (BMS) and some other applications. This accessory module is installed by removing the MicroLogix 1500 front panel cover. It provides accurate time and clock reference which can be accessed by the program through built-in instructions.
The 1764-RTC features clock accuracy that varies depending on the operating temperature. It has an accuracy of +34 to -70 seconds/month at 0°C or +32°F); +36 to -68 seconds/month at +25°C or +77°F); +29 to -75 seconds/month at +40°C or +104°F) and -133 to -237 seconds/month at +55°C or +131°F. When data to be written to the RTC module is verified valid by the system, the data is written immediately however, an invalid data cannot be written to the module. This prevents system and programming error from occurring to the controller.
Additionally, the 17640RTC comes with a non-replaceable battery. This battery is expected to operate at a minimum of 5 years when the host controller is operated at 0°C to +40°C or +32°F to +104°F). When stored, the RTC battery life expectancy is 5 years, minimum at -40°C to +25°C (-40°F to +77°F) and 3 years minimum at +26°C to +60°C (+79°F to +140°F). If the RTC battery is low but the controller remains powered, the RTC module operation is normal. If controller power is removed along a low-battery RTC, the RTC data may be lost upon completion of power cycle. The RTC can be disabled to lengthen the device’ operation.
| Revision Part # | Also known as | |
|---|---|---|
| 1764-RTC Ser A | 1764-RTC/A, Series A, Rev A | Request a quote |
| Don't see your particular revision? Contact us now. | ||
- 1764RTC
- 176A-RTC
- 176ARTC
- L764-RTC
- L764RTC
- L76A-RTC
- L76ARTC
What is the accuracy of the 1764-RTC?
The 1764-RTC has accuracy of +34 to -70 seconds/month at 0°C or +32°F); +36 to -68 seconds/month at +25°C or +77°F); +29 to -75 seconds/month at +40°C or +104°F) and -133 to -237 seconds/month at +55°C or +131°F.
Can I replace the internal battery of the 1764-RTC?
No. The internal battery is non-replaceable.
What is the compatible controller for use with the 1764-RTC?
The 1764-RTC may be used with the MicroLogix 1500.
Allen-Bradley MicroLogix 1500 RTC Module with Real-Time Clock and IP20 enclosure
The 1764-RTC is an accessory module that is compatible with the MicroLogix 1500 controller. Though controllers have built-in clock and date function, it has lower accuracy and processor dependent. With a 1764-RTC, the data can be separately stored as it comes with its own battery and memory. Additionally, this module enables accurate implementation of schedule-based automation such as pumps switching, equipment ON/OFF scheduling and other similar functions.