Mitsubishi A1S68DAV 8-Channel Analog Output Module

The Mitsubishi A1S68DAV is an 8-channel analog output (D/A conversion) module for the MELSEC-A series PLC system. It converts digital values from the PLC CPU into analog voltage outputs, enabling precise control of field devices such as variable frequency drives, servo valve positioners, chart recorders, and other analog-controlled equipment. The module provides high channel density, allowing 8 analog outputs in a single module, and is suitable for process control applications requiring multiple analog control loops.

High-Density Analog Output

The A1S68DAV provides eight analog output channels in a single module, offering high I/O density and reducing the number of modules required for multi-loop control applications. The voltage output range of -10V to +10V is compatible with a wide range of industrial actuators, including proportional valves, motor speed controllers, and analog instruments. The 12-bit resolution provides 4096 steps across the output range, sufficient for most process control requirements.

Precise D/A Conversion for Process Control

The module uses dedicated D/A converters per channel, ensuring independent and accurate conversion for each output. The conversion speed of 1 ms per channel supports dynamic control applications requiring fast response. The module is designed for use in the MELSEC-A series backplane and is compatible with QnAS series CPUs when installed in appropriate base units. For current output applications, the companion A1S68DAI module provides 4-20 mA outputs for loop-powered instruments.

Application Domains

The A1S68DAV is used in variable frequency drive speed control via 0-10V command signals, proportional valve positioning in hydraulic systems, chart recorder output for process monitoring, analog control of damper and valve actuators in HVAC systems, and laboratory test equipment requiring programmable voltage sources. Its 8-channel density makes it particularly suitable for multi-zone temperature control systems and multi-axis analog control applications.