Description

Delta AS04AD-A Analog Input Module for AS Series PLC

The Delta AS04AD-A is an analog input expansion module designed for Delta AS Series PLC systems. It provides 4 analog input channels with 16-bit resolution, allowing the PLC to read voltage and current signals from industrial field instruments.

The AS04AD-A supports common analog signal ranges including 0–10V, -10–10V, 0/4–20mA, and -20–20mA, making it suitable for connecting transmitters, sensors, process instruments, and machine control signals directly to the PLC system.

This module is commonly used in industrial automation panels, process monitoring systems, machine control applications, and PLC-based monitoring solutions where accurate analog signal acquisition is required.

Key Features
Delta AS Series PLC analog input module
4 analog input channels
16-bit input resolution
Supports voltage and current analog signals
Signal ranges include 0/1–5V, -5–5V, 0–10V, -10–10V, 0/4–20mA, and -20–20mA
Fast conversion time: 2 ms/channel
Suitable for pressure, level, flow, and temperature transmitter signals
DIN rail / chassis mounting
Pluggable screw terminal connection
IP20 protection rating
Suitable for industrial control panels and machine automation systems
Technical Specifications
Item Specification
Brand Delta Electronics
Model AS04AD-A
Series Delta AS Series
Module Type Analog Input Module
Number of Inputs 4 Analog Inputs
Resolution 16-bit
Input Signal Type Voltage / Current
Voltage Input Ranges 0/1–5V, -5–5V, 0–10V, -10–10V
Current Input Ranges 0/4–20mA, -20–20mA
Conversion Time 2 ms/channel
Mounting DIN Rail / Chassis Mount
Terminal Type Pluggable Screw Terminal
Protection Rating IP20
Operating Temperature -20°C to +60°C
Application PLC Analog Signal Acquisition

Typical Applications

The Delta AS04AD-A Analog Input Module is suitable for:

Pressure transmitter signal input
Level transmitter analog signal input
Flow meter analog signal monitoring
Temperature transmitter signal input
4–20mA process signal acquisition
0–10V sensor signal monitoring
Industrial machine monitoring
Water treatment systems
Pump control and monitoring panels
Food and beverage production lines
Packaging and textile machinery
General industrial automation systems
Why Use Delta AS04AD-A?

The AS04AD-A is a practical choice when a Delta AS Series PLC system needs to read multiple analog signals from field devices. With 4 analog input channels, the module allows direct connection of transmitters and sensors to the PLC, helping the control system monitor real process values such as pressure, level, flow, and temperature.

It is especially useful in control panels where analog feedback is required for monitoring, alarms, interlocks, PID control, and HMI display.