Delta AS06XA-A Analog Mixed I O Module for AS Series PLC

Product Overview

The Delta AS06XA-A is an analog mixed input output module designed for the AS series of programmable logic controllers. This module provides four analog input channels and two analog output channels in a single compact unit, offering efficient integration of analog measurement and control capabilities into AS series PLC systems. The AS06XA-A supports both voltage and current signal ranges, enabling connection to a wide variety of field instruments such as pressure transmitters, temperature sensors, flow meters, and proportional control valves. The module achieves 16-bit resolution, ensuring accurate representation of analog signals for precision control applications. The AS series architecture allows the module to be easily configured using Delta's ISPSoft programming software, with automatic I/O addressing and diagnostic functions.

Key Features of Delta AS06XA-A

The analog input section of the AS06XA-A features four channels with selectable voltage ranges including ±10 V, 0 to 10 V, 0 to 5 V, and 1 to 5 V, as well as current ranges of 0 to 20 mA and 4 to 20 mA. The input impedance is 1 MΩ for voltage channels and 250 Ω for current channels. The A/D conversion speed is 1 millisecond per channel, providing timely updates for real-time control loops. The analog output section provides two channels supporting the same voltage and current ranges as the inputs, with D/A conversion speed of 1 millisecond per channel and a load capacity of 10 mA maximum for voltage outputs and 500 Ω maximum for current outputs.

The module includes built-in digital filtering that can be configured to reduce noise on input signals without requiring external signal conditioning. The device also features per-channel scaling parameters that allow the raw 16-bit digital values to be converted directly into engineering units (e.g., °C, PSI, L/min) within the module, reducing PLC program complexity. The AS06XA-A incorporates isolation between the analog circuits and the PLC backplane, protecting the controller from ground loops and high-voltage transients. The module is hot-swappable on certain AS series bases, allowing replacement without system shutdown. LED indicators on the front panel display power status and communication activity.

Technical Specifications

• Manufacturer: Delta Electronics

• Part Number: AS06XA-A

• Series: AS Series PLC

• Product Type: Analog Mixed I O Module

• Analog Inputs: 4 channels

• Analog Outputs: 2 channels

• Input Signal Ranges: ±10 V, 0-10 V, 0-5 V, 1-5 V, 0-20 mA, 4-20 mA

• Output Signal Ranges: Same as input ranges

• Resolution: 16 bits

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

• Output Load Capacity: 10 mA max (voltage), 500 Ω max (current)

• Conversion Speed: 1 ms per channel

• Accuracy at 25°C: ±0.5% of full scale

• Digital Filter: Configurable

• Scaling: Direct to engineering units

• Isolation: Analog to digital isolated

• Indicators: Power, communication status LEDs

• Configuration Software: ISPSoft

• Operating Temperature: 0 to +55 °C

• Mounting: AS series backplane or DIN rail

Functional Description

The AS06XA-A analog module converts the voltage or current signals present on its input channels into 16-bit digital values that are stored in the PLC's special data registers. The CPU reads these values during each scan cycle to use in control algorithms, data logging, or alarm monitoring. The module's analog inputs feature programmable averaging filters that can be set to smooth out rapid fluctuations caused by process noise. For the output section, the PLC writes digital values to the module's output registers, and the module converts these values to the corresponding voltage or current signals to control field actuators. The scaling function allows the user to configure the module to directly output engineering units; for example, a 4-20 mA input from a pressure transmitter with a range of 0-100 PSI can be automatically scaled so that the PLC reads 0 to 100 directly without additional calculation steps. The isolation barrier between the analog circuits and the PLC backplane prevents differential ground potentials from affecting measurement accuracy.

Applications

The Delta AS06XA-A analog mixed I O module is used in industrial automation applications that require both analog input measurement and analog output control. Typical applications include temperature control with thermocouple transmitters providing 4-20 mA signals and the PLC output controlling a 0-10 V signal to a SCR power controller; pressure monitoring using 0-10 V pressure transmitters and output of 4-20 mA to a pressure control valve; flow rate control in chemical dosing systems; and position feedback from linear potentiometers in hydraulic systems. The module is also used in building automation for monitoring room temperature sensors and controlling heating valve actuators. For system integrators, the AS06XA-A offers a cost-effective mixed I O solution that reduces the number of modules required compared to separate analog input and output cards.