Siemens 6ES7288-3AQ04-0AA0 S7-200 SMART Analog Output

Siemens 6ES7288-3AQ04-0AA0: SIMATIC S7-200 SMART EM AQ04 Analog Output Module

The Siemens 6ES7288-3AQ04-0AA0 (Expansion Module EM AQ04) is a 4-channel analog output expansion module designed for the SIMATIC S7-200 SMART PLC family. Built to deliver precise field control signals, this module converts digital values from the CPU into standard analog voltage or current signals to drive actuators, control valves, variable frequency drives (VFDs), and signal converters.

Featuring 12-bit signal conversion resolution, configurable channel ranges, and integrated short-circuit protection, the EM AQ04 provides smooth, reliable analog process control across diverse manufacturing environments.

Key Technical Specifications

• Part Number: 6ES7288-3AQ04-0AA0 (MLFB: 6ES7288-3AQ04-0AA0)

• Product Series: SIMATIC S7-200 SMART

• Module Type: Analog Output Expansion Module (EM AQ04)

• Number of Outputs: 4 analog output channels

• Voltage Output Ranges: ±10 V, 0 to 10 V

• Current Output Ranges: 0 to 20 mA, 4 to 20 mA

• Resolution: 12 bits (11 bits + sign for voltage; 11 bits for current)

• Short-Circuit Protection: Yes (for voltage outputs)

• Open-Circuit Monitoring: Yes (for current outputs)

• Isolation: 500 V AC optical isolation between field circuitry and backplane bus

• Dimensions (W x H x D): 45 mm x 100 mm x 81 mm

• Weight: Approx. 145 g

Key Features and Industrial Benefits

High-Density 4-Channel Analog Control

Provides 4 independent analog channels in a single 45 mm housing, maximizing cabinet panel density while supplying continuous control signals to multiple field devices simultaneously.

Flexible Voltage & Current Selection

Each channel can be individually configured for voltage (±10 V, 0–10 V) or current (0–20 mA, 4–20 mA) output modes, offering versatile compatibility across different field instrument standards.

Output Protection & Diagnostic Monitoring

Features short-circuit protection on voltage outputs and open-circuit detection on current loops. Onboard LED indicators highlight module health and potential wiring faults, minimizing downtime.

Seamless STEP 7-Micro/WIN SMART Configuration

Easily select signal types, output ranges, and fault reaction behavior (hold last value or substitute value) directly within the STEP 7-Micro/WIN SMART software environment.

Applications

• Speed reference setting for Variable Frequency Drives (VFDs) and servo drives

• Proportional control valve, damper, and actuator positioning

• Process variable re-transmission to chart recorders, meters, and external controllers

• General industrial control systems using S7-200 SMART PLCs (ST20, ST30, ST40, ST60, SR20, SR30, SR40, SR60)