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With the advent of the circular economy, green jobs are growing, the result of a paradigm shift in the world of energy and production that is also positively influencing the labor market.
Founded in 2007, over the years E-Repair has distinguished itself for quality, reliability and innovation, becoming the market leader and the only Siemens service partner in Italy for the repair of industrial electronic boards. The heart of the activity is in the innovative laboratories, where qualified technicians work on 4 product lines, and are able to repair products of the main brands on the market. E-Repair develops customized preventive maintenance solutions that safeguard the system and reduce breakdowns, reducing downtime and costs of machine downtime. Through the services of: Product advance, technological washing, data back up and dedicated warehouse for the plant's strategic products.
Within industrial automation systems, the Power Supply Module (PSM) is the component that ensures the proper supply of energy to the entire drive chain.
Without an efficient PSM, no CNC axis, spindle, or control module can operate reliably.
The 6SN1145 root identifies the main power supply components of the Siemens SIMODRIVE 611 platform, a family still widely used in industrial environments today.
The PSM performs key functions for production continuity:
generation of the DC Bus voltage
stabilization of the power supply
harmonic filtering
protection against disturbances, spikes, and overloads
stable power delivery to Power Modules and Closed-Loop Units
What is a Siemens 6SN1114 Board and What Is It Used For?
The 6SN1114 root of the SIMODRIVE 611 platform includes synchronization and advanced control boards designed to manage high-level functions within SINUMERIK CNC systems.
These are specialized electronic boards that play essential roles in multi-axis systems, helping ensure:
• precise synchronization between multiple axes
• advanced management of feedback signals
• high-speed dynamic adjustments
• process stability even under variable load conditions
• coordinated operation between spindle and linear axes
They are critical components in machines that require smooth, consistent, and perfectly synchronized movements—typical of high-precision industrial applications.
What is a Siemens 6SN1113 Board and What Is It Used For?
The 6SN1113 series of the SIMODRIVE 611 family includes advanced regulation and control boards used to optimize specific axis or spindle functions.
These are specialized electronic boards that:
• manage dedicated control loops
• improve speed, torque, and synchronization regulation
• extend the functionalities of 6SN1118 Closed-Loop modules
• support advanced configurations of SINUMERIK CNC machines
The 6SN1113 boards are therefore a key component in industrial systems where high precision, dynamic stability, and immediate motor response are required.
In the Siemens SIMODRIVE 611 industrial automation system, the Interface Boards (6SN1111 series) play a crucial role:
they act as a bridge between the control modules (Closed-Loop) and the power modules, ensuring that signals, commands, and feedback are exchanged correctly, stably, and in perfect sync.
They are, in essence, the communication core of the entire drive system.
A 6SN1111 board enables:
transmission of command signals between the CNC, Closed-Loop Unit, and Power Module
interfacing of external encoders, resolvers, and sensors
management of dedicated functions depending on the machine configuration
correct synchronization between axes and spindles
full compatibility with Siemens bus systems and proprietary protocols
Without the Interface Board, the drive system cannot communicate properly, leading to errors, instability, or the inability of machine axes to start.
What Is a SIMODRIVE Control Board and What Is It Used For?
Within Siemens SIMODRIVE 611 industrial automation systems, the Control and Regulation Boards are the electronic components that extend, specialize, and optimize the functions of the Closed-Loop modules.
They are the system’s “additional intelligence”: they handle advanced logic, synchronization, communication, and dedicated functions that are not managed by the power modules or the Closed-Loop modules.
In practice, the Control Boards are what allow a CNC system to become: more precise, more versatile, faster, and more integrated with the machine.
What is a Siemens Simodrive Power Module and what is it used for?
In every industrial automation system, the power module is the component that supplies the motor with the energy it needs to move.
It is the element that converts the voltage coming from the Power Supply into controlled current, regulating:
torque, speed, direction, and acceleration, without any loss of precision or stability.
In practice, the Power Module is the “electric muscle” of the drive system:
it receives impulses from the control module (Closed-Loop Unit) and converts them into physical power delivered to the motor.
Siemens SIMODRIVE 6SN1115 – Guide to the Range of Control and Drive Modules
The Siemens SIMODRIVE 6SN1115 range is one of the most widely used standards within SINUMERIK CNC automation systems and industrial applications requiring high precision, reliability, and production continuity. These modules are essential for axis and spindle control, used in machine tools, production lines, and highly automated industrial systems.
These devices remain extensively present across the European machine park, even though many versions are now discontinued. Access to certified repair and refurbishment services therefore becomes strategic to ensure the lifecycle of industrial plants and reduce downtime costs.
Siemens SIMODRIVE 611 – 6SN1117 Control Modules: The Heart of CNC Precision
The Siemens SIMODRIVE 611 6SN1117 modules are among the most reliable and long-lasting components in CNC automation systems. Designed to manage axes and spindles with extremely high precision, they are still used in thousands of machine tools thanks to their robustness, operational continuity, and full compatibility with the SINUMERIK ecosystem.
Despite their commercial discontinuation, the 6SN1117 modules remain essential in modern manufacturing—especially in environments where stability, accuracy, and process consistency are non-negotiable requirements.
The Siemens family 6SN1118-1NK / 6SN1118-1NJ / 6SN1118-0NH includes the special and OEM versions of the control units from the SIMODRIVE 611 range, developed by Siemens for dedicated applications or customized solutions for machine builders (OEM – Original Equipment Manufacturer).
These modules are characterized by specific firmware, adapted interfaces, and customized control logic designed according to the requirements of the machine builder or plant.
On the E-Repair website, the range also includes related models such as 6SN1118-0NJ01-0AA0, 6SN1118-0NK01-0AA0, 6SN1118-0NP01-0AA0 and 6SN1118-0NH01-0AA0, all compatible with SINUMERIK 810D / 840D CNC systems and Siemens OEM digital configurations.
These variants, often considered custom modules, ensure maximum integration within SIMODRIVE 611 systems and maintain full compatibility with the standard versions.
Technical Description 6SN1118-0DA / 6SN1118-0DB / 6SN1118-0DC / 6SN1118-0DF / 6SN1118-0DG
The Siemens 6SN1118 Digital Drive family includes the digital axis control units of the SIMODRIVE 611 range, such as the 6SN1118-0DA, 6SN1118-0DB, 0DC, 6SN1118-0DE, 6SN1118-0DF, and 6SN1118-0DG models, designed for high-performance feed and spindle axis control.
These units represent the digital evolution of the previous Siemens analog boards, ensuring high-speed data transmission, improved control accuracy, and reduced cycle times in the most demanding CNC applications.
Thanks to direct communication with the 6SN1123 and 6SN1145 power modules, the 6SN1118 Digital Drive series guarantees energy efficiency, signal stability, and integrated diagnostics within the SINUMERIK 810D / SINUMERIK 840D systems.
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