Products Description
GE WESDAC D20A 32-Channel Analog Input Module in stock
GE WESDAC D20A is a high precision analog input peripheral module for GE Multilin D20 substation automation RTU platform. It pairs with WESTERM D20A termination board to collect 32 channels of analog field signals, perform high-speed A/D conversion and transmit processed data to the D20 main processor via D.20 link bus.
This module supports configurable voltage and current inputs with 14-bit resolution, built-in surge protection and galvanic isolation. Widely deployed in power substation SCADA systems, it is a classic spare part for legacy substation control cabinet overhaul and replacement.
Main Specifications
| No. | Item | Parameter |
|---|---|---|
| 1 | Brand | GE Vernova / Multilin |
| 2 | Model | WESDAC D20A |
| 3 | Module Type | Analog Input Peripheral Module |
| 4 | System Platform | D20 / D200 Substation RTU Controller |
| 5 | Input Channels | 32 differential analog inputs |
| 6 | Resolution | 14-bit plus sign bit |
| 7 | Input Range | ±1/±5/±10V, ±1~20mA configurable |
| 8 | Operating Temperature | -20℃ ~ +60℃ |
Core Functions
| No. | Function Description |
|---|---|
| 1 | Sample and convert 32 channels of analog voltage/current signals from substation transducers |
| 2 | Transmit digitalized measurement data to D20 main CPU through D.20 link communication bus |
| 3 | Built-in surge withstand circuit and 1500Vrms isolation for substation harsh EMI environment |
| 4 | Provide loop wetting power supply for 4-20mA field transmitter circuits |
| 5 | Onboard self-diagnosis for input overvoltage and signal fault detection |
Application Scenarios
| No. | Application |
|---|---|
| 1 | Power transmission & distribution substation SCADA automation cabinet |
| 2 | Generator station voltage, current and power analog measurement acquisition |
| 3 | Substation remote terminal unit (RTU) multi-point analog signal collection |
| 4 | Interface with voltage/current transducers and 4-20mA field sensors |
| 5 | GE D20 substation automation system spare replacement and maintenance |
FAQ
| No. | Question & Answer |
|---|---|
| 1 | Q:What is GE WESDAC D20A? A:It is a 32-channel analog input peripheral module for GE D20 substation RTU. It collects analog transducer signals, performs A/D conversion and sends measurement data to the D20 main processor for substation SCADA monitoring. |
| 2 | Q:What is the difference between WESDAC D20A and WESTERM D20A? A:WESDAC D20A is the upper processing board for signal sampling and conversion; WESTERM D20A is the bottom terminal board for field wiring termination. They work together as a complete analog input assembly. |
| 3 | Q:What signals can D20A receive? A:It accepts bipolar/unipolar voltage and 4-20mA current signals from transducers, widely used to measure substation voltage, current, power and temperature analog quantities. |
