Lenze E931Ex - Manual (Page 20)

Electrical installation
Important notes
5
l
20 GHB 13.0001−EN EN 3.0
5 Electrical installation
5.1 Important notes
(
Stop!
The drive controller contains electrostatically sensitive components.
The personnel must be free of electrostatic charge when carrying out assembly
and service operations.
{
Danger!
ƒ The connection of all pluggable terminals has to be effected in a
deenergised state.
ƒ Connecting and disconnecting the voltage supply (X2) due to the charging
processes of the DC bus capacitor may cause traces of burning on the
plug−in connection, and may result in a destruction of the internal electronic
circuit.
ƒ A false polarity of the DC supply can bring about the destruction of the
drive. Before switching the drive on, ensure that the polarity of the
DC supply is correct.
)
Note!
The following requirements have to be met with regard to the trouble−free
operation:
ƒ An installation according to EMC.
ƒ The shield of the motor cable has to be applied to PE potential on a
preferably large surface in order to prevent negative effects.
ƒ The resolver cable, encoder cable, and the motor cable may have a
maximum length of 15 m!
ƒ The feeding power supply units have to be sufficiently dimensioned. The
power supply units have to be protected against overcurrent by means of
appropriate input fuses.