Shipping information

Do you require same-day delivery or express shipping with a defined delivery time for this item?
Please contact us!

Product description

The Siemens 6SN1118-0DH21-0AA1 is a two-axis closed-loop control plug-in unit from the modular SIMODRIVE 611 digital drive system. Siemens describes the module as a closed-loop high-performance control for digital drives with a digital setpoint interface. It is intended to control feed axes and main spindle drives and handles two axes within a matching SIMODRIVE-611 power module. This exact version operates without a direct measuring-system connection. That feature is essential when selecting a replacement because similarly named 6SN1118 control boards can use different measuring-system, axis and interface configurations. The documented weight is approximately 0.77 kg. As a plug-in control module, the board performs control and communication tasks, while the power section, infeed and motor connection remain in the associated modular drive system. Digital setpoint transfer integrates it into the intended CNC and drive architecture. The compact plug-in design enables targeted board replacement without replacing the complete power unit. For repair, retrofit or spare-parts stocking, only the complete order number 6SN1118-0DH21-0AA1 is decisive. Before replacement, the axis count, installed power module, motor and encoder version, measuring-system concept, bus system, CNC software version and stored drive data must be checked. A neighbouring 0DK, 0DM, 0NH or other 6SN1118 variant is not automatically compatible. Siemens instructions for de-energised work, ESD protection, connectors and parameterisation must be followed during installation. After hardware replacement, the correct module assignment, data transfer from the control and error-free communication on the drive bus must be verified. Existing machine data and backups should therefore be available before replacement. The module is a targeted spare for existing SIMODRIVE-611-D systems whose documentation specifies this exact MLFB and two-axis configuration.

Siemens 6SN1118-0DH21-0AA1

Specifications

Manufacturer Siemens
Product series SIMODRIVE 611 digital
Manufacturer / order / identification number 6SN1118-0DH21-0AA1
Device type Closed-loop control plug-in unit
Control class High Performance
Control type Closed-loop control
Number of axes 2
Drive type Digital drive
Setpoint interface Digital
Application Feed and main spindle drives
Direct measuring system Not provided
System architecture Modular SIMODRIVE-611 drive system
Mounting type Plug-in board in the power module
Communication interface SIMODRIVE-611 drive bus
Weight approx. 0.77 kg
Control cabinet with PLC modules and automation components
Machine downtime in a production environment

Machine downtime?

Faster delivery

Is your machine down and do you require particularly fast delivery? Tell us directly. We will do everything possible to provide a quotation with the fastest available delivery and find a solution that matches your schedule.

Our highest priority is to keep your production processes running. Rely on our expertise and flexible service to minimise machine downtime effectively.

Contact us now!

Product safety

Manufacturer / EU responsible person

FAQ

Frequently asked questions

Contact us
What is the function of the Siemens 6SN1118-0DH21-0AA1?

The board controls two digital feed or main spindle axes within a matching modular SIMODRIVE-611-D drive system.

What must be checked when replacing the 6SN1118-0DH21-0AA1?

The complete MLFB, axis count, power module, motor and encoder version, measuring-system concept, drive bus, CNC software version and stored drive data are decisive.

Is there a guarantee?

Yes, we provide a 14-day functional guarantee for used items. This means the component must be operational when received.

Please note that the guarantee only applies when the warranty seal is undamaged.

If a defect occurs within 14 calendar days, please contact us in writing. Subject to availability, we will provide a replacement or refund the full purchase price after return.

Further details are provided in the terms and conditions supplied with your quotation.

How quickly do you dispatch and which shipping options are available?

We generally dispatch immediately - in many cases on the same working day. For particularly urgent requirements or machine downtime, we find a suitable solution as quickly as possible and provide a specific delivery window on request.

Express shipping or collection from our premises is also possible, depending on the situation. State your requirements during the ordering process or contact us directly.

We ship worldwide and work with reliable shipping partners, from parcel services to freight forwarding. Freight shipments normally require some preparation so the goods arrive safely and undamaged.

Which payment methods are available?

Payment is normally made by bank transfer against invoice. Payment is due within 10 calendar days of receiving the goods.

As a rule, we offer purchase on account for all customers. In individual cases, such as new customers or particularly high-value components, we may agree advance payment. This decision is made individually and communicated transparently.

Can we return items if they were ordered incorrectly?

Because we sell exclusively to business customers (B2B), there is no general right of return and no consumer right of withdrawal.

Please note that returns of functioning goods are generally excluded. In justified exceptional cases, we can assess an individual solution, but this is not the standard procedure.

Is there a discount when ordering several items?

For larger order quantities or several items of one type, we can offer individual discounts.

Simply send us a quick enquiry - we check availability and will gladly prepare a tailored quotation with quantity pricing.

Do you also purchase industrial spare parts?

Yes, we also purchase automation components, such as frequency inverters, PLC assemblies, panels, servo motors and CPUs. Components from Siemens, Lenze, Schneider Electric, Control Techniques or Heidenhain are especially sought after, and other brands are also possible.

The process is straightforward: email us an inventory list or overview photos at info@reha-industriekomponenten.de. We calculate a market-based purchase price and send you an offer.

Receive a quotation by email

Request price

Complete the form with your enquiry. We will respond with price, availability and delivery time.