NORDAC SK 750E Handbuch Safety instructions
2 BU 0750 GB
NORDAC SK 750E Frequency Inverter
Instructions for the safety and use of
variable frequency inverters
(as provided in the 73/23/EEC low-voltage directive)
1. General
Depending on their type of enclosure, variable frequency invert-
ers may have live, bare, in some cases even moving or rotating
parts as well as hot surfaces during operation.
Inadmissibly removing the required covers, improper use, incor-
rect installation or handling can be dangerous and may lead to
serious damage to persons or to property.
See the documantation for more detailed information.
Any transport, installation, starting-up or maintenance work shall
be performed by properly qualified, skilled and competent per-
sonnel (IEC 364 or CENELEC HD 384 respectively or DIN VDE
0100 and IEC 664 or DIN VDE 0110 and national accident pre-
vention regulations to be observed).
Qualified, skilled personnel as mentioned in these basic safety
instructions is understood to refer to persons who are familiar
with the installation, assembly, setting-up and operation of the
product and who have the qualifications required for the job of
which they are in charge.
2. Intended use
Variable frequency inverters are components designed to be in-
tegrated into electrical installations or machinery.
If the inverters are installed in machines, they must not be put
into operation (in other words, operation as intended by the
manufacturer must not begin) until it has been established that
the machine in question actually meets the requirements men-
tioned in the EG directive 89/392/EEC (Directive For Machines);
EN 60204 is to be observed.
The device must not be put into operation (i.e. operation as in-
tended by the manufacturer must not be started) unless the
stipulations of the EMC directive (89/336/EEC) are fulfilled.
Variable drequency inverters meet the requirements stated in the
low-voltage directive 73/23/EEC. Likewise the accorded stan-
dards of the series prEN 50178/DIN VDE 0160 in conjunction
with EN 60439-1/ VDE 0660 Part 500 and EN 60146/ VDE 0558
are applied to the variable frequency inverters.
Refer to the rating plate and the documentation for details on
technical data and connecting requirements and do not fail to
observe them and to follow instructions.
3. Transport, storage
Follow the instructions for transport, storage, and proper han-
dling. Ensure climatic conditions as specified in prEN 50178.
4. Installation
The devices must be installed and cooled as directed in the rele-
vant documentation.
The variable frequency inverters must be protected against in-
admissible stress. It is of particular importance that no compo-
nents are bent and/or insulation distances changed during trans-
port and handling. Do not touch electronic components and con-
tacts.
Variable frequency inverters contain electrostatically sensitive
components which are easily damaged through improper han-
dling. Electrical components must not be damaged or destroyed
mechanically (potential health risks!).
5. Electrical connection
Follow the applicable national accident prevention rules (e.g.
VGB 4) when working on variable frequency inverters while they
are live.
Electrical installation is to be performed in accordance with ap-
plicable rules and regulations (e.g. regarding conductor cross
sections, fusing, PE connection). Apart from these, more instruc-
tions may be mentioned in the documentation.
Recommendations for meeting EMC standards in installation –
for instance with regard to screening, earthing, filter arrangement
and the routing of lines – are found in the inverter documenta-
tion. CE-marked variable frequency inverters are always sub-
jects to such instructions as well. It is the responsibility of the
machine or plant manufacturer to ensure that the limit values
stipulated by the EMC legislation are duly met.
6. Operation
It may be necessary to provide facilities in which variable fre-
quency inverters are installed with additional monitoring and pro-
tecting devices to satisfy the applicable safety regulations, e.g.
the law on technical work materials, accident prevention regula-
tions etc. Modifications of the variable frequency inverters by
means of the operating software are allowed.
Do not touch live parts of the device or power terminals right af-
ter the inverter has been disconnected from the supply voltage
as capacitors may still be charged. The information plates on the
variable frequency inverters will give you precise details on the
subject.
Keep all covers closed during operation.
7. Service and maintenance
As described in the manufacturer's documentation.
Do keep these Safety Instructions for future reference!
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