2.10.5.1 The Five Safety Rules; Safe Operation - BONFIGLIOLI Vectron ACTIVE CUBE Applications Manual

2.10.5.1 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.
2.10.6

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 dis-
charged. 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 deener-
gized 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 nor 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 switch-off, 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 is 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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