Operating instructions

Definitions and Warnings

MICROMASTER 420 / 440 – DC link coupling between several

Frequency inverters

A&D SD Page 3/32

2 Definitions and Warnings

2.1 Qualified personnel

In the sense of this documentation, qualified personnel are those who are

knowledgeable and qualified to install, mount, commission, operate and

service/maintain the MICROMASTER 4 products to be used. He or she

must have the appropriate qualifications to carry-out these activities.

For example:

o Trained and authorized to energize and de-energize, ground and tag

circuits and equipment according to applicable safety standards.

o Trained or instructed according to the latest safety standards in the care

and use of the appropriate safety equipment.

o Trained in rendering first aid.

There is no explicit warning information in this documentation. However,

reference is made to warning information and instructions in the Operating

Instructions for the particular product.

2.2 User group

These application notes were drawn-up to support customers and

employees of Siemens AG when engineering plants and machines.

2.3 Exclusion of liability

The application examples are provided at no charge. They may be used

under the clear understanding that the party using them does so at his own

risk. They may only be passed-on to third parties, completely unchanged,

maintaining all of the confidential property notices. These application

examples may only be commercially passed-on after prior authorization in

writing from Siemens Aktiengesellschaft.

Siemens does not accept any liability for recommendations which are

provided or implied by the following description. The following description

does not represent any additional guarantee, warranty or liability, which

goes beyond Siemens general conditions for supply. Any other claims are

completely excluded. The authors and owners are only liable for willful and

gross negligence. It is especially important to note that the authors are not

liable for possible defects and subsequent damage.