Electrical Connection - KEB COMBIVERT G6 Programming Manual

1.4 Electrical connection

DANGER
For a trouble-free and safe operation, please pay attention to the following instructions:
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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.
► For any work on the unit switch off the supply voltage and secure it
against switching on.
► Wait until the drive has stopped in order that no regenerative en-
ergy 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).
► Connect the protective earth conductor to drive converter and mo-
tor.
► Install all required covers and protective devices for operation.
► The control cabinet shall be kept closed during operation.
The electrical installation shall be carried out in accordance with the relevant re-
quirements.
Cable cross-sections and fuses must be dimensioned according to the design of
the machine manufacturer. Specified minimum / maximum values may not be fallen
below /exceeded.
Drive converters are only intended for permanent connection. Cross-sections of
protective earth conductors should be interpreted in accordance with
Connection of the drive converter is only permissible on symmetrical networks with
a maximum line voltage (L1, L2, L3) with respect to earth (N/PE) of max. 300 V. An
isolating transformer must be used for supply networks which exceed this value.
In case of non-compliance the control is not longer considered as "safe separate
circuit".
With existing or newly wired circuits the person installing the units or machines must
ensure the EN 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 equi-
potential bonding exists between the components to be connected (e.g. by the equi-
potential line). Disregard can cause destruction of the components by equalizing
currents.
Basic Safety Instructions
EN 61800-5-1.
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