GE DS2020DACAG2

Product Features

GE DS2020DACAG2 utilizes the standard Mark Vle I/O module form factor.

GE DS2020DACAG2 is designed to respond quickly to signal changes in the field.

GE DS2020DACAG2 usually has electrical isolation between channels and between channels and the backplane to improve noise immunity and system safety.

GE DS2020DACAG2 often includes diagnostic features to monitor module health, channel failures, shorts, opens, etc.

GE DS2020DACAG2 is configured through Mark VIe engineering tool software (e.g. ToolboxST), which defines each channel's function (input/output), filtering time, failsafe status, etc.

In some configurations or application scenarios, GE DS2020DACAG2 may be used to implement Safety Instrumented Functions (SIF) to achieve a specific Safety Integrity Level (SIL). However, this depends on the specific application design and certification.

GE DS2020DACAG2 connects to field signal cables via front panel connectors (typically pluggable terminal blocks) and plugs into the Mark VIe's I/O package (Termination Panel) or specialized chassis via rear connectors.

Product Functions

Device status monitoring (DI):

GE DS2020DACAG2 reads motor run/stop/fault status (from contactor auxiliary contacts).

GE DS2020DACAG2 detects valve open in place/close in place signal (limit switch).

GE DS2020DACAG2 confirms circuit breaker opening/closing status.

GE DS2020DACAG2 receives push button (start/stop/reset) commands.

GE DS2020DACAG2 receives safety interlock contact status (e.g. emergency stop button, safety door switch).

Device Drive and Control (DO):

GE DS2020DACAG2 starts and stops motor (via intermediate relay or contactor coil).

GE DS2020DACAG2 controls solenoid valves on/off (actuates hydraulic/pneumatic valves).

GE DS2020DACAG2 illuminates/extinguishes indicator lights (run, stop, alarm, fault).

GE DS2020DACAG2 triggers audible and visual alarms.

GE DS2020DACAG2 drive relays to perform logic switching.

High-speed interlock and sequence control:

GE DS2020DACAG2 realizes interlock logic for starting and stopping equipment (e.g., “Do not start main unit until lubrication pump is running”).

Execution of complex sequential control steps (e.g. unit start/stop sequences).

Fast response to protection signals triggering shutdown (e.g. overspeed, high vibration, high temperature).

Signal Conditioning and Isolation:

Safely and reliably converts switching signals such as 24VDC/48VDC/125VDC in the field to logic levels that are recognized by the control system and provides electrical isolation to prevent interference and ground loop problems.

Product Applications

Gas turbine control and protection system:

GE DS2020DACAG2 monitors flame detectors, vibration switches, lube oil pressure switches, bearing temperature switches, valve position limit switches (fuel valves, intake valves, exhaust valves), circuit breaker status, emergency stop button status, control cabinet access switches, etc.

GE DS2020DACAG2 controls fuel valve solenoid valves, starter motor relays, lube oil pump start/stop, cooling fan start/stop, alarm indicator lights, shutdown solenoid valves, etc.

Steam turbine control and protection system:

GE DS2020DACAG2 monitors the speed sensor (overspeed switch), axial displacement switch, eccentricity switch, condenser vacuum switch, bearing temperature/vibration switch, valve position feedback, main steam door status, etc.

GE DS2020DACAG2 can control the main steam door actuator, extractor valve, start/stop of the coiler unit, lube oil pumps, emergency shutdown system (ETS) solenoid valves, etc.

Compressor station control (centrifugal/reciprocating):

GE DS2020DACAG2 monitors vibration/displacement overrun switches, lube oil pressure/temperature switches, seal gas pressure switches, anti-surge valve position, emergency stop button, combustible gas detection alarm contacts, etc.

GE DS2020DACAG2 controls compressor start/stop sequences, bleeder valves, discharge valves, lube oil pumps, main motor circuit breakers, alarm horns/indicators, etc.