GE DS3810MTRA

Key Parameters

• Memory Type: Battery-backed SRAM with integrated real-time clock (RTC)

• Memory Capacity: 2MB or 4MB (depending on configuration)

• Time-Stamp Resolution: 1ms (high-accuracy event logging)

• Real-Time Clock: Integrated RTC with battery backup (maintains time during power loss)

• Time-Stamp Accuracy: ±2 seconds per day (temperature-compensated)

• Data Retention: >10 years with battery (battery-backed memory)

• Battery: Field-replaceable lithium 3.6V (life ~5 years) – separate battery for RTC backup

• Battery Monitoring: On-board voltage monitoring for both memory and RTC batteries, low-battery alarm

• Diagnostics: LED status (power, battery, RTC, activity), self-test on power-up, RTC health indication

• Event Logging: Configurable event buffers for trip events, alarms, operator actions, and analog value snapshots

• Isolation: 1500V RMS memory-to-backplane

• Temp Range: –30°C to +70°C

• Power Supply: +5V (logic) from backplane; battery backup for memory and RTC

• Physical: 6U VME single-slot board

• Key Features: Battery-backed memory + RTC, 1ms time-stamp resolution, event logging, dual battery monitoring, self-test

Advantages

• High-accuracy time-stamping – the DS3810MTRA provides 1ms time-stamp resolution, enabling precise correlation of turbine events, alarms, and trips for root-cause analysis.

• Integrated RTC with battery backup – maintains accurate time even during extended power outages, ensuring all events are correctly time-stamped.

• Comprehensive event logging – stores trip events, alarms, operator actions, and analog value snapshots in a time-correlated format.

• Dual battery monitoring – the General Electric DS3810MTRA monitors both the memory and RTC batteries, providing early warning of depletion.

• Data persistence – preserves event logs and configuration data through power cycles.

• Self-test on power-up – verifies memory integrity, RTC functionality, and battery health at system startup.

• Drop-in compatible – works with all Mark IV backplanes and processor configurations.

Applications

• Turbine event recording – the DS3810MTRA records trip events, alarm activations, and operator actions with precise time-stamps for root-cause analysis.

• Fault diagnosis – time-correlated event logs help identify sequence-of-events leading to turbine trips, enabling faster troubleshooting.

• Performance trending – stores operational data with time-stamps for performance analysis and predictive maintenance.

• Sequence-of-events recording – the General Electric DS3810MTRA provides high-resolution time-stamping for critical sequence-of-events (SOE) applications.

• Compliance and reporting – maintains detailed, time-stamped logs for regulatory compliance and operational reporting.

• Retrofits – replaces older event recorders with an integrated VME solution.

vs Competitors & Previous Variants

Selection Tips

• Time-stamped event logging – choose the DS3810MTRA when you require high-accuracy time-stamping (1ms) for sequence-of-events recording, fault diagnosis, or compliance logging.

• Combined memory + RTC – the General Electric DS3810MTRA integrates both non-volatile memory and a battery-backed real-time clock in a single board, saving rack space.

• Event correlation – for root-cause analysis of turbine trips, the time-correlated event logs from the DS3810MTRA are essential.

• Battery management – monitor both the memory and RTC batteries on the DS3810MTRA; replace both batteries when the low-battery alarm indicates.

• Spare strategy – keep one DS3810MTRA per 5–8 installed units, especially in systems where event logging is critical.

• Pre-installation verification – verify battery voltages and RTC accuracy before installation.

• Configuration – configure the event logging parameters (buffer size, events to log) to match your application requirements.

Critical Precautions

• Battery handling – replace the batteries on the DS3810MTRA only with the specified lithium 3.6V type. Use correct polarity for both the memory and RTC batteries.

• Battery replacement procedure – when replacing batteries on the General Electric DS3810MTRA, ensure the board is powered (or data/event logs are backed up) to prevent data loss.

• Data backup – before any maintenance, export all event logs and configuration data using the Mark IV system tools.

• RTC accuracy – verify the RTC accuracy of the DS3810MTRA periodically; temperature-compensated accuracy is ±2 seconds/day.

• Time synchronization – if the Mark IV system has a master time source, ensure the DS3810MTRA RTC is synchronized to maintain consistent time-stamps.

• Event log management – configure the DS3810MTRA event buffer size appropriately; if the buffer fills, older events may be overwritten.

• ESD handling – always use a grounded wrist strap when handling the DS3810MTRA; CMOS memory and RTC components are ESD-sensitive.

• Battery disposal – dispose of the DS3810MTRA lithium batteries according to local environmental regulations.

• Hot-swap – never insert or remove the DS3810MTRA while the rack is powered; this can cause data or event log corruption.

• Low-battery alarm – if the low-battery alarm is active for either the memory or RTC battery, replace the affected battery as soon as possible.

• Storage – store spare DS3810MTRA boards in anti-static bags in a dry, temperature-controlled environment. Batteries should be stored separately if the board will be in storage for more than 6 months.

• Battery shelf life – check the battery date codes on the DS3810MTRA before installation; batteries have a limited shelf life (typically 5 years from manufacture).