DS2020ASSAG1 GE

Detailed Technical Parameters

GE DS2020ASSAG1 provides 16 analog input channels with 16-bit resolution and ±0.1% accuracy across the full -40°C to +70°C operating range. Each channel is field-configurable via software for 4-20mA current signals (with internal 250Ω shunt resistor) or ±10V voltage signals. The board features channel-to-channel isolation of 1500V AC and common-mode rejection ratio of 110dB. The board includes 4 dedicated digital input channels (24V DC nominal) and 4 digital output channels (solid-state relays rated at 0.5A). Onboard processing handles signal linearization, scaling, and basic diagnostic monitoring including open-circuit and out-of-range detection. Communication with the Mark VIe main processor occurs through a high-speed fiber-optic IONet interface operating at 100MB/s with 1ms cycle time. GE DS2020ASSAG1 draws approximately 13W from the +5V DC and ±15V DC backplane rails and features conformal coating with vibration tolerance rated at 6G (10-500Hz) and shock resistance at 35G, fully compliant with ISA-S71.04 environmental class G3. All field connections terminate through two 64-pin high-density connectors with gold-plated contacts.

Advantages & Features

GE DS2020ASSAG1 offers several distinctive advantages that differentiate it from other Mark VIe analog boards. The simplified functionality provides a cost-effective solution for applications requiring only 4-20mA and voltage inputs, eliminating unnecessary thermocouple or RTD capabilities. The software-configurable channels reduce cabinet footprint and simplify spares management. The high channel density (16 channels per board) reduces total board requirements for auxiliary monitoring applications.

Application Cases & Application Fields

GE DS2020ASSAG1 is deployed in Mark VIe installations for straightforward analog monitoring. In a 500MW plant, the board provides pressure and flow monitoring for cooling water systems. In a pipeline station, it monitors lube oil pressures.

Competitor Comparison

Versus GE DS2020AGSAG1, the ASSAG1 provides similar functionality with a more streamlined feature set. Versus third-party analog modules, it integrates seamlessly with Mark VIe IONet architecture.

Selection Suggestions

Choose GE DS2020ASSAG1 for installations requiring only 4-20mA and voltage inputs where cost-effectiveness is prioritized. Verify sensor types. Maintain spares considering 12-16 week lead times.

Critical Precautions

Never ground cable shields at multiple points. Ensure proper sensor wiring. Configure channel types in software. Perform calibration verification annually. Over 40% of field issues trace to improper sensor wiring. This board does not support thermocouple or RTD sensors—ensure compatibility with field instruments before selection.