SIEMENS 6ES5247-4UA31 Positioning Module

Product Overview

The SIEMENS 6ES5247-4UA31 is a specialized IP247 positioning module from the SIMATIC S5 series, engineered for precise open-loop and closed-loop control of stepper motors in industrial automation systems. As a daughter module, the SIEMENS 6ES5247-4UA31 must be inserted into a compatible S5 base module with a daughter slot—typically an FM or PI module from the 6ES5 471/472 series—to function within S5-115U, S5-135U, or S5-155U rack systems. This modular architecture makes the SIEMENS 6ES5247-4UA31 a versatile solution for applications requiring fine motion control.

The SIEMENS 6ES5247-4UA31 is designed for self-ventilated operation, distinguishing it from its counterpart 6ES5247-4UA41, which features a double-width, non-ventilated design with an additional heat sink. The module supports up to three independent axes and provides comprehensive positioning functions including absolute/relative positioning, referencing (homing), jogging, limit monitoring, and following error supervision. Through the STEP 5 programming environment, the SIEMENS 6ES5247-4UA31 is configured using standard function blocks FB164 for operation and monitoring, and FB165 for parameter assignment, ensuring seamless integration into existing S5 automation architectures

Technical Specifications

Parameter Name	Parameter Value
Product Model	6ES5247-4UA31
Manufacturer	Siemens
Product Type	IP247 Positioning & Closed-Loop Control Submodule (Daughter Module)
Series	SIMATIC S5
Compatible Host Systems	S5-115U, S5-135U, S5-155U (with daughter slot base module)
Controller Type	Stepper Motors
Control Axes	Up to 3 independent axes
Encoder Interface	Incremental encoder (A/B/Z signals)
Position Resolution	32-bit position register
Max. Input Frequency	Approx. 500 kHz (5V differential), 100 kHz (24V HTL)
Output Signal (per axis)	Clock, Direction, Reset (differential)
Digital Inputs	4 per axis (24V)
Digital Outputs	1 per axis (24V, 120 mA short-circuit protected)
Supply Voltage (System Bus)	+5V DC ±5%, approx. 0.8A
Supply Voltage (Load)	24V DC nominal (20-30V range)
Battery Backup Voltage	2.7-5.25V (typ. 5 µA current draw)
Operating Temperature	0°C to +60°C
Storage Temperature	-40°C to +85°C
Protection Class	IP20

Main Features and Advantages

Precision Motion Control for Stepper Motors

The SIEMENS 6ES5247-4UA31 delivers exceptional positioning accuracy through its support for incremental encoder feedback and 32-bit position registers. With a maximum input frequency of 500 kHz for differential signals, the module can handle high-speed motion profiles while maintaining precise position tracking. It supports both rapid traverse and creep speed operations, providing the flexibility required for complex positioning tasks. The built-in limit monitoring and following error supervision functions ensure that motion remains within safe operational boundaries.

Flexible Configuration and Integration

The SIEMENS 6ES5247-4UA31 offers significant flexibility through its comprehensive set of digital inputs and outputs—four inputs and one output per controlled axis. The module communicates with the CPU via a 4 Kbyte dual-port RAM, divided into pages assigned to each axis. The fourth page is dedicated to transferring machining programs, enabling efficient data exchange. The module address can be configured via DIP switches, and the module identifier (SYSID) can be entered to differentiate multiple positioning modules within the same system.

Comprehensive Software Support

The SIEMENS 6ES5247-4UA31 is fully supported by the STEP 5 programming environment, with dedicated function blocks FB164 and FB165 for operation and parameterization. The COM247 communications software allows users to generate, save, and print machining programs and machine data, as well as test the module online with the connected plant. This robust software ecosystem ensures that the SIEMENS 6ES5247-4UA31 can be efficiently configured and maintained by engineers familiar with the S5 platform.