Description
Product Description
The GE Energy Services WESDAC D20 SHV2 is a high-voltage digital input logic panel used in the D20 Remote Terminal Unit (RTU) and substation automation platform. GE documentation identifies the SHV2 version as the WESDAC D20 high-voltage status-input logic module, with part-number family 507-0103. The WESDAC logic panel performs the data-acquisition and control processing, while the associated WESTERM termination panel provides field wiring, power, the local WESMAINT connection, and the HDLC D.20 Link interface.
The D20 architecture uses distributed processing, allowing intelligent I/O modules to communicate with the D20 main processor. GE identifies D20 I/O modules for substation automation, SCADA, digital data collection, and substation control. The SHV2 module is therefore intended to operate as part of a complete D20/D200 system rather than as a standalone controller.
WESDAC D20 SHV2
Product Parameters
| Parameter | Specification |
|---|---|
| Brand | GE Energy Services |
| Model | WESDAC D20 SHV2 |
| Part Number Family | 507-0103 |
| Product Type | High-Voltage Digital Input Logic Panel |
| Series | D20 / D200 RTU |
| Function | Digital Status Input Data Acquisition |
| System Application | SCADA / Substation Automation / RTU |
| Architecture | Distributed I/O |
| Companion Panel | WESTERM D20 Termination Panel |
| Communication | D.20 Link / HDLC through associated termination hardware |
| Field Interface | High-voltage digital/status inputs |
| Installation | D20/D200 I/O peripheral assembly |
| Service Function | Data acquisition and control processing |
| Condition | Verify actual unit condition before purchase |
| Discontinued Status | Legacy D20 hardware; verify system compatibility and support status |
The WESDAC board is housed in a metal enclosure and plugs directly into the corresponding WESTERM termination panel. GE states that the WESDAC unit can be hot-swapped from the WESTERM board without disconnecting peripheral power, with the D20ME/ME II able to download the appropriate database parameters to a replacement module.
FAQ
Q: What is the WESDAC D20 SHV2?
A: It is the high-voltage WESDAC logic panel used for digital/status input processing in the GE D20 RTU family.
Q: What is the associated part number?
A: GE documentation identifies the SHV2 WESDAC D20 as drawing/layout family 507-0103. Individual hardware units may carry a more specific suffix or revision.
Q: Is the SHV2 a complete RTU?
A: No. It is an I/O logic panel that operates as part of the D20/D200 distributed I/O architecture and normally interfaces with a corresponding WESTERM termination panel.
Q: What is the WESTERM panel used for?
A: It provides field I/O termination, power connections, the local WESMAINT port, and the HDLC interface for the D.20 Link.
Q: Can the WESDAC module be replaced while powered?
A: GE documentation describes the WESDAC/WESTERM peripheral arrangement as hot-swappable, allowing the WESDAC unit to be removed from the termination panel without disconnecting power. Follow the applicable site safety procedures before performing replacement.
Recommended Related GE D20 Models
- D20S — 64-Channel Digital Status Input Module
- D20A — 32-Channel DC Analog Input Module
- D20K — Digital Control Output Module
- D20C / DNPIO-C — Combination Input/Output Module
- D20AC — AC Analog Input Module
- D20ME — Main D20 RTU Processor
- D20ME II — D20 Main Processor / RTU Controller
- D20MX — Substation Controller / RTU Platform
- WESTERM D20S — Digital Input Termination Panel
- D.20 RIO — Distributed I/O Controller
For replacement applications, verify the complete part number and revision, SHV2 hardware identification, matching WESTERM termination panel, field voltage, database/configuration, and D20 main-processor compatibility before installation. GE’s current D.20 documentation confirms that the D20 family remains a distributed I/O architecture for substation automation and SCADA applications.
