Siemens 6ES5475-3AA11 Analog Output Module

Precision Signal Generation for S5-115U Systems

The Siemens 6ES5475-3AA11 analog output module converts digital setpoints into precise analog signals for field actuators. This unit drives valves, positioners, and variable-speed drives with high accuracy and stability. Process control applications depend on this module for reliable and repeatable analog output signals.

Output Specifications and Electrical Characteristics

This analog output module features two isolated channels with 12-bit resolution for fine process control. The outputs provide selectable ranges of 0 to 10 V or 0 to 20 mA signals. Each output includes short-circuit protection, limiting the current to 25 mA . Furthermore, the module updates both channels every 2 ms, ensuring fast system response.

Parameter	Specification
Brand	Siemens
Model	6ES5475-3AA11
Number of Outputs	2 (isolated)
Output Resolution	12 bits
Output Ranges	0–10 V, -10–+10 V, 0–20 mA, 4–20 mA
Accuracy (25°C)	±0.1% of full scale
Load (current mode)	0–500 Ω
Load (voltage mode)	> 2 kΩ
Update Rate	2 ms per channel
Protection	Short-circuit, current limiting
Dimensions (W x H x D)	40 mm x 125 mm x 118 mm
Weight	0.35 kg
Power Consumption	5 V DC at 180 mA
Compatible CPUs	S5-115U
Operating Temperature	0°C to 55°C

Output Configuration and Calibration

Users can configure each output channel independently for voltage or current operation through the programming software. The module stores calibration parameters in non-volatile memory, retaining them during power loss. A built-in reference voltage source enables easy recalibration in the field. Furthermore, the module provides diagnostic information for each channel, including overrange detection and open-circuit monitoring.

Protection and Diagnostic Features

The Siemens 6ES5475-3AA11 incorporates short-circuit protection that limits the output current to 25 mA. Thermal shutdown activates at 85°C to prevent damage from overload conditions. LED indicators on the front panel display power and output status. The module also provides a collective fault signal to the CPU for system monitoring.

Physical Design and Installation

This analog output module features a 40 mm housing that fits standard S5-115U rack slots. The unit weighs approximately 0.35 kilograms, allowing straightforward installation and removal. A 32-pin front connector provides access to both output terminals and the shield connection. Screw-type terminals accept wires from 0.5 mm² to 2.5 mm² for secure field connections.

System Integration and Application Areas

You can install this analog output module in any slot of the S5-115U central or expansion rack. The module maps its outputs to consecutive addresses in the CPU’s I/O table. It supports setpoint generation for drives, valve positioning, and other continuous control applications. For optimal performance, use shielded twisted-pair cables for all output connections.