Product Description

Overview

The GE WESTERM D20C is a versatile combination I/O module designed for D20 Substation Automation Systems. It efficiently integrates digital, control, and optional analog I/O functions into a compact, rugged package. Moreover, its hot-swappable WESDAC modules allow maintenance without interrupting wiring, ensuring uninterrupted substation operation.

Technical Specifications

I/O Capacity
• Digital Inputs: 16
• Control Outputs: 8 (momentary or dual-function trip/close)
• Optional Analog Inputs: 16
• Optional Analog Outputs: 8

Module Design
• Bottom Module: WESTERM D20C – field wiring termination
• Top Module: WESDAC D20C – data processing and communication
• Hot-swappable WESDAC modules

Communication
• Interfaces with D20 main processor
• Supports SCADA/DCS protocols (Modbus, DNP3, IEC 61850)

Physical Specifications
• Dimensions: 150 × 300 × 450 mm
• Weight: 1.5 kg
• Panel or rack mountable

Environmental Ratings
• Operating Temperature: –40 °C to +70 °C
• Humidity: 5–95% non-condensing

Certifications
• CE and RoHS compliant

FAQ 

Q1: How many digital inputs does the WESTERM D20C support?
A: It supports 16 digital inputs for status monitoring in substation systems.

Q2: Can the module handle analog signals?
A: Yes, it supports optional configurations of 16 analog inputs and 8 analog outputs.

Q3: Is the module hot-swappable?
A: Yes, WESDAC modules can be replaced without disturbing the field wiring connections.

Q4: Which protocols are supported for SCADA integration?
A: Modbus, DNP3, and IEC 61850 are supported depending on system configuration.

Q5: What is the operating temperature range?
A: The module operates between –40 °C and +70 °C, suitable for harsh substation environments.