Industrial controllers often require additional program and data storage. The Honeywell 620-0027 delivers reliable memory expansion for compatible systems. This module functions as a memory upgrade unit from Honeywell. It increases the storage capacity of your existing processor module.
Technical Specifications & Dimensions
This memory module provides non-volatile storage for user programs and data. The table below outlines its core technical parameters.
| Parameter | Specification |
|---|---|
| Memory Type | CMOS SRAM with battery backup |
| Storage Capacity | 256 KB |
| Battery Type | Lithium coin cell (CR2032 compatible) |
| Battery Life | 5 years typical |
| Data Retention | 10 years minimum with battery |
| Access Time | 150 ns |
| Operating Voltage | 5V DC from backplane |
| Current Consumption | 15 mA typical (standby) |
| Unit Weight | 0.12 kg (0.26 lbs) |
| Dimensions (WxHxD) | 35 x 85 x 12 mm |
| Number of Components | 4 memory chips + 1 battery holder |
Construction and Interface Layout
This module features a compact plastic housing with gold-plated edge contacts. Such a design ensures reliable connection to the processor backplane. Furthermore, the Honeywell 620-0027 provides a battery access cover on the top surface. You will find a standard CR2032 battery holder under this cover. The module includes polarization features to prevent incorrect insertion. A write-protect switch allows you to lock stored data against accidental overwrites.
Energy Storage and Data Retention
Unlike volatile memory, this module includes a dedicated backup battery. The lithium cell maintains stored data when the system power turns off. Consequently, the Honeywell 620-0027 retains user programs indefinitely during power outages. The module draws minimal current from the battery in standby mode. This low power consumption extends battery life to several years. The memory chips themselves do not require any refresh cycles for data retention.
Installation and Mounting Requirements
Installing the Honeywell 620-0027 takes only a few seconds of work. The module inserts directly into a dedicated memory slot on the processor. It also locks securely with two side-mounted retaining clips. Always disconnect system power before inserting or removing this module. The unit requires no tools or additional mounting hardware. The module sits flush with the processor housing after proper installation.
Integration with Honeywell Processors
This memory module works perfectly with compatible Honeywell processors. It stores user programs, configuration data, and register tables. Operators can expand their system’s capacity without replacing the main CPU. The Honeywell 620-0027 also supports data logging and recipe storage functions. Consequently, this module remains an excellent choice for system upgrades. The unit delivers reliable performance across a 0°C to 60°C temperature range.
Details
| Weight | 0.2 kg |
|---|---|
| Dimensions | 85 × 65 × 30 mm |
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