Emerson EC20-8AD Analog Input Expansion Module

Overview

The Emerson EC20-8AD is an analog input expansion module for EC20 series PLCs. It provides 8 channels for precise analog signal acquisition. Users can measure voltage or current signals from sensors, transmitters, and other field devices. The module ensures accurate data collection for industrial automation systems. It integrates seamlessly with EC20 controllers, enabling reliable performance in demanding environments. Its robust design supports DIN rail or screw mounting for flexible installation.

Technical Specifications

• Model Number: EC20-8AD

• Series: Emerson EC20 Series

• Function: Analog input expansion module

• Analog Input Channels: 8 channels

• Input Signal Types: Voltage (0–5V, 1–5V, 0–10V), Current (0–20mA, 4–20mA)

• Input Resolution: 12-bit

• Input Impedance: >1 MΩ (voltage), 250 Ω (current)

• Conversion Speed: ~1 ms per channel

• Isolation: Channel-to-PLC isolation

• Accuracy: ±0.5% full scale

• Power Supply: 24V DC (from main EC20 base or external)

• Power Consumption: Approx. 2W

• Operating Temperature: –10°C to +55°C

• Storage Temperature: –40°C to +70°C

• Mounting Type: DIN rail or screw mount

• Dimensions: Matches EC20 module form factor

• Communication Interface: Internal EC20 bus

• Status Indicators: LED indicators for power and channel activity