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The ABB DSMB127 (57360001-HG) is a 64 KB read/write memory (RWM) board with battery backup, designed for use in compatible ABB legacy control-system equipment. It provides memory capacity for the associated control hardware and is identified by the DSMB127 model designation and order number 57360001-HG.
The board’s principal identifying characteristics are its 64 KB memory capacity, battery-backed RWM design and ABB Master control-system hardware association. Battery backup supports the retention of stored memory contents when normal system power is unavailable. For maintenance and replacement planning, the complete order number and installed controller configuration should be checked together. The DSMB127 should not be assumed interchangeable with other ABB memory boards solely because they share a similar designation or physical appearance.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | ABB |
| Model | DSMB127 |
| Order number | 57360001-HG |
| Product type | Memory board |
| Memory type | RWM (read/write memory) |
| Memory capacity | 64 KB |
| Memory backup | Battery-backed |
ABB Advant OCS Product Guide
ABB Advant OCS Product Guide
Detailed Product Overview
Memory Board Function
The ABB DSMB127 is a memory board intended for compatible legacy ABB automation control equipment. Its 64 KB RWM capacity provides read/write memory for the associated hardware, while the battery-backed design supports retention of stored information when normal system power is unavailable.
This function distinguishes the DSMB127 from digital input modules, digital output modules and communication boards. Its primary role is memory storage rather than direct field-signal acquisition or output control.
Identification and Hardware Compatibility
The DSMB127 is identified by the ABB order number 57360001-HG. Both the model designation and the complete order number should be retained in procurement records to support accurate part identification.
The DSMB127 is associated with legacy ABB Master control-system hardware. However, the exact controller compatibility and configuration requirements must be assessed against the installed equipment. Memory capacity alone does not establish compatibility, because different memory boards may have different hardware or system dependencies.
When preparing a replacement, compare the installed board’s markings, connector arrangement and controller configuration with the proposed part. Where the existing system documentation identifies a specific board revision or memory configuration, use those details as part of the selection process.
ABB Advant OCS Product Guide
Synchronization
The synchronization function implemented into the “Generator Control” function is started by selection of the generator breaker from central point of control. When synchronization is required, the generator name to use for the synchronization can be entered by the operator, whereafter the generator dialogue automatically will be presented and will be set into droop control mode. By selection of the synchronization command from the generator dialogue, the synchronization can be continued into manual or automatic mode. See also chapter 7.6.
Displays
In the single line diagram displays of the electrical network, the generators are only presented by the most important actual measured analogue data. Dedicated displays are available for more detailed generator information:
- Generator overview
In this display, is In table format, detailed generator data is presented in a table regarding the actual control mode of the governor and the AVR, working setpoint and some alarms. It also offers, thanks to its layout, an overview of available modes for each generator individually.
- Synchronization overview
In this display is the generator data included to complete and enable synchronization. It is not intended for mode- or setpoint control of the generator. For synchronization of the generator, this display can be consulted.
- Capability diagram
The P-Q diagram of the generator includes:
– dynamic working point tracking
– actual control mode, setpoint and working point
– related analogue data
- Object display
In this display very detailed information is presented regarding the actual control mode of the governor and the AVR, related analogue data, working setpoint and all alarms.
