6ES7288-3AQ02-0AA0 S7-200 SMART Analog Output

Siemens 6ES7288-3AQ02-0AA0: SIMATIC S7-200 SMART EM AQ02 Analog Output Module

The Siemens 6ES7288-3AQ02-0AA0 (Expansion Module EM AQ02) is a compact 2-channel analog output module engineered for the SIMATIC S7-200 SMART PLC series. Purpose-built for precise field control, this module converts digital commands from the S7-200 SMART CPU into standardized analog voltage or current signals to drive field devices such as variable frequency drives (VFDs), control valves, and proportional actuators.

Featuring 12-bit output resolution, channel-by-channel range selection, and built-in protection circuitry, the EM AQ02 provides accurate, cost-effective analog control for small-to-medium industrial automation systems.

Key Technical Specifications

• Part Number: 6ES7288-3AQ02-0AA0 (MLFB: 6ES7288-3AQ02-0AA0)

• Product Series: SIMATIC S7-200 SMART

• Module Type: Analog Output Expansion Module (EM AQ02)

• Number of Outputs: 2 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 loops)

• Isolation: 500 V AC optical isolation between field wiring and internal bus

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

• Weight: Approx. 145 g

Key Features and Industrial Benefits

Compact 2-Channel Analog Control

Provides 2 dedicated analog output channels in a standard 45 mm enclosure. Perfect for standalone machinery and compact panels requiring precise analog control without paying for extra, unused capacity.

Independently Configurable Signal Ranges

Each channel can be software-configured for either voltage (±10 V, 0–10 V) or current (0–20 mA, 4–20 mA) output formats, providing broad compatibility with diverse field instruments.

Integrated Channel Diagnostics & Protection

Includes voltage short-circuit protection and current loop open-circuit monitoring. Onboard diagnostic LEDs indicate power state and output channel faults, speeding up field troubleshooting.

Simple STEP 7-Micro/WIN SMART Integration

Easily configure output modes, signal limits, and failure fallback values (hold last value or force substitute value) directly inside STEP 7-Micro/WIN SMART.

Applications

• Speed reference signaling for Variable Frequency Drives (VFDs) and inverter drives

• Position control for proportional valves, dampers, and motorized actuators

• Analog re-transmission to panel indicators, recorders, and external PLCs