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Allen Bradley PLC 3 1775-MR8

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1775-MR8

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The 1775-MR8 model from Allen Bradley is a CMOS RAM memory module designed for use in PLC 3 systems. It features a memory capacity of 32,768 words, structured with a 16-bit word architecture, ensuring effective data management.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 1775-MR8

ManufacturerAllen Bradley
Product TypeCMOS RAM Memory Module
Product LinePLC 3
Part Number1775-MR8
Weight6.25 lbs (2.83 kg)
UPC00 842923104157
Memory TypeCMOS RAM
Memory Capacity32,768 words (32K)
Word Size16-bit word architecture
Data RetentionBattery backup to prevent data loss
Power Draw3.5 A at +5 VDC
Operating TemperatureUp to 60°C
Maximum Installation Altitude2000 meters above sea level
Humidity Tolerance5 to 95%
Storage TemperatureUp to 70°C
Operating Temperature (Battery)Up to 85°C
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The Allen Bradley 1775-MR8 serves as a crucial memory component for the PLC 3 series. This CMOS RAM memory module boasts a substantial storage capacity of 32,768 words, formatted using a 16-bit word architecture. Designed for efficiency, it draws a current of 3.5 A at a voltage of +5 VDC.

Data integrity is maintained by the battery backup system, which prevents information loss during power disruptions. The device can function reliably within operating temperatures reaching 60°C, and when powered by its battery, it can operate at temperatures up to 85°C, ensuring adaptability in various conditions.

In addition, the 1775-MR8 supports installations at altitudes as high as 2000 meters above sea level, making it versatile for a range of applications. It is also constructed to tolerate humidity variations from 5% to 95%, which helps secure operational reliability even in challenging environments. The storage temperature can go up to 70°C, providing solid protection for the stored data.

Revision Part #Also known as
1775-MR8 Ser A1775-MR8/A, Series A, Rev A
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