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2.11
Handling and installation
•
Do not commission any damaged or destroyed components.
•
Prevent any mechanical overloading of the frequency inverter. Do not bend any components and
never change the isolation distances.
•
Do not touch any electronic construction elements and contacts. The frequency inverter is
equipped with components which are sensitive to electrostatic energy and can be damaged if
handled improperly. Any use of damaged or destroyed components will endanger the ma-
chine/plant safety and shall be considered as non-compliance with the applicable standards.
•
Only install the frequency inverter in a suitable operating environment. The frequency inverter is
exclusively designed for installation in industrial environments.
•
If seals are removed from the case, this can result in the warranty becoming null and void.
2.11.1
Electrical connections
•
The five safety rules must be complied with.
•
Never touch live terminals. The DC-link may have dangerous voltage levels even up to three
minutes after shutdown.
•
When performing any work on/with the frequency inverter, always comply with the applicable
national and international regulations/laws on work on electrical equipment/plants of the country
in which the frequency inverter is used.
•
The cables connected to the frequency inverters may not be subjected to high-voltage insulation
tests unless appropriate circuitry measures are taken before.
•
Only connect the frequency inverter to suitable supply mains.
2.11.1.1
The five safety rules
When working on/in electrical plants, always follow the five safety rules:
1.
Isolate
2.
Secure to prevent restarting
3.
Check isolation
4.
Earth and short-circuit,
5.
Cover or shield neighboring live parts.
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2.11.2
Safe operation
•
During operation of the frequency inverter, always comply with the applicable national and inter-
national regulations/laws on work on electrical equipment/plants.
•
Before commissioning and the start of the operation, make sure to fix all covers and check the
terminals. Check the additional monitoring and protective devices according to the applicable na-
tional and international safety directives.
•
During operation, never open the machine/plant
•
Do not connect/disconnect any components/equipment during operation.
•
The machine/plant holds high voltage levels during operation, is equipped with rotating parts
(fan) and has hot surfaces. Any unauthorized removal of covers, improper use, wrong installation
or operation may result in serious injuries or material damage.
•
Some components, e.g. the heat sink or brake resistor, may be hot even some time after the ma-
chine/plant was shut down. Don't touch any surfaces directly after shutdown. Wear safety gloves
where necessary.
•
The frequency inverter may hold dangerous voltage levels until the capacitor in the DC link is
discharged. Wait for at least 3 minutes after shutdown before starting electrical or mechanical
work on the frequency inverter. Even after this waiting time, make sure that the equipment is
deenergized in accordance with the safety rules before starting the work.
•
In order to avoid accidents or damage, only qualified staff and electricians may carry out the work
such as installation, commissioning or setup.
•
In the case of a defect of terminals and/or cables, immediately disconnect the frequency inverter
from mains supply.
•
Persons not familiar with the operation of frequency inverters must not have access to the fre-
quency inverter. Do not bypass or decommission any protective facilities.
•
The frequency inverter may be connected to power supply every 60 s. This must be considered
when operating a mains contactor in jog operation mode. For commissioning or after an emer-
gency stop, a non-recurrent, direct restart is permissible.
•
After a failure and restoration of the power supply, the motor may start unexpectedly if the Auto-
Start function is activated.
If staff are endangered, a restart of the motor must be prevented by means of external circuitry.
•
Before commissioning and the start of the operation, make sure to fix all covers and check the
terminals. Check the additional monitoring and protective devices according to EN 60204 and ap-
plicable the safety directives (e.g. Working Machines Act or Accident Prevention Directives).
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