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KFU 2-/4-
11
1.5 Electrical
Connection
Warning!
Before any assembly or connection work, discharge the frequency in-
verter. Verify that the frequency inverter is discharged.
Do not touch the terminals because the capacitors may still be charged.
Comply with the information given in the operating instructions and on
the frequency inverter label.
When working at the frequency inverters, comply with the applicable standards BGV
A2 (VBG 4), VDE 0100 and other national directives. Comply with the electrical instal-
lation instructions given in the documentation as well as the relevant directives. The
manufacturer of the industrial machine or plant is responsible for making sure that
the limit values specified in the EMC product standard EN 61800-3 for electrical vari-
able-speed drives are complied with. The documentation contains information on
EMC-conforming installation. The cables connected to the frequency inverters may
not be subjected to high-voltage insulation tests unless appropriate circuitry meas-
ures are taken before.
1.6
Information on Use
Warning!
The frequency inverter may be connected to power supply every 60 s.
This must be considered when operating a mains contactor in jog op-
eration mode. For commissioning or after an emergency stop, a non-
recurrent, direct restart is permissible.
After a failure and restoration of the power supply, the motor may start
unexpectedly if the AutoStart 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 applicable the safety
directives (e.g. Working Machines Act, Accident Prevention Directives
etc.).
No connection work may be performed, while the system is in opera-
tion.
1.7
Maintenance and Service
Warning!
Unauthorized opening and improper interventions can lead to personal
injury or material damage. Repairs on the frequency inverters may only
be carried out by the manufacturer or persons authorized by the manu-
facturer. Check protective equipment regularly.