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BASIC SAFETY INSTRUCTIONS
1.4 Electrical connection
DANGER
Voltage at the terminals and in the device!
Danger to life due to electric shock!
► Never work on the open device or never touch exposed parts.
► Foranyworkontheunitswitchothesupplyvoltageandsecureit
against switching on.
► In spite of missing supply voltage, the Active Front End can continue
to modulate, e.g. in regenerative operation. The isolation from sup-
ply must be checked.
► Wait until all drives has stopped in order that no regenerative energy
can be generated.
► Await capacitor discharge time (5 minutes) if necessary, measure
DC voltage at the terminals.
► If personal protection is required, install suitable protective devices
for drive converters.
► Never bridge upstream protective devices (also not for test pur-
poses).
► Always connect the protective earth conductor to drive converter
and motor.
► Install all required covers and protective devices for operation.
► The control cabinet shall be kept closed during operation.
For a trouble-free and safe operation, please pay attention to the following instructions:
• The electrical installation shall be carried out in accordance with the relevant re-
quirements.
• Cable cross-sections and fuses must be dimensioned by the user according to the
speciedminimum/maximumvaluesfortheapplication.
• Drive converters are only intended for permanent connection. Cross-sections of pro-
tective earth conductors should be interpreted in accordance with DIN IEC 60364-
5-54 .
• Power systems in which a phase conductor is grounded (e.g. delta mains) are not
allowed for the Active-Front-End.
• With existing or newly wired circuits the person installing the units or machines must
ensure that the PELV requirements are met.
• For drive converters that are not isolated from the supply circuit (in accordance with
EN 61800-5-1) all control lines must be included in other protective measures (e.g.
double insulation or shielded, earthed and insulated).
• When using components without isolated inputs/outputs, it is necessary that equipo-
tential bonding exists between the components to be connected (e.g. by the equipo-
tential line). Disregard can cause destruction of the components by the equalizing
currents.
• UseonlytheKEBspeciedAFE-/LCLlter.
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