Product Description
Emerson EC20-8AD Analog Input Module
- Manufacturer: Emerson
- Model/Part Number: EC20-8AD
- Description: DeltaV EC20 Series Analog Input Expansion Module, 8-Channel, Voltage/Current Input
Overview
- The Emerson EC20-8AD is an analog input expansion module for the DeltaV EC20 Series Programmable Logic Controller (PLC) system. It provides 8 channels for analog voltage or current inputs, designed for precise data acquisition from field devices such as sensors and transmitters. The module is used in industrial automation applications, including oil and gas, chemical, power generation, and manufacturing, to monitor process variables with high reliability.
Technical Specifications
| Specification | Details |
|---|---|
| Model | EC20-8AD |
| Series | DeltaV EC20 |
| Type | Analog Input Expansion Module, 8-Channel |
| Input Channels | 8 analog inputs |
| Input Types | -10V to +10V, 0-20 mA, 4-20 mA |
| Resolution | 12-bit |
| Accuracy | ±1% of full scale |
| Conversion Time | 15 ms per channel (120 ms for all 8 channels) |
| Power Supply | 24 VDC, supplied by main module |
| Power Consumption | Approximately 2 W |
| Operating Temperature | -5°C to +55°C |
| Storage Temperature | -40°C to +70°C |
| Relative Humidity | 5% to 95%, non-condensing (30 ± 2°C) |
| Protection Rating | IP20 |
| Airborne Contaminants | ISA-S71.04-1985 Class G3 |
| Dimensions | 58 mm (L) x 90 mm (W) x 82 mm (H) |
| Weight | Approximately 240 g |
| Mounting | T-type DIN rail |
| Certifications | CE, RoHS |
| System Compatibility | DeltaV EC20 Series PLCs (e.g., EC20-2012BTA, EC20-3232BRA) |
Additional Information
- Functionality: The EC20-8AD supports multiple input types (-10V to +10V, 0-20 mA, 4-20 mA) for flexibility in connecting various analog field devices. With 12-bit resolution and ±1% accuracy, it ensures precise data acquisition. The module connects to the EC20 main module via the system bus, drawing power and communicating data seamlessly. It is programmed and monitored using the ControlStar software, which supports configuration and diagnostics.
- Environmental Durability: Designed for industrial environments, the EC20-8AD operates reliably within a temperature range of -5°C to +55°C and withstands humidity, shock, and vibration per EC20 series standards. Its compact design and IP20 rating make it suitable for control cabinets in demanding conditions.