Lenze 931W - Manual (Page 28)

Electrical installation
Important notes
5

28 GHB 13.0002-EN 3.1
5 Electrical installation
5.1 Important notes

Stop!
The drive controller contains electrostatically sensitive components.
The personnel must be free of electrostatic charge prior to 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 intermediate circuit capacitor may cause traces of burning
on the wrap 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!
For trouble-free operation, the following conditions are required:
ƒ An installation according to EMC.
ƒ The shield of the motor cable has to be connected to PE potential as
extensively as possible to prevent effects due to interference.
ƒ
The resolver cable, encoder cable, and the motor cable may have a length of
10 m at a maximum!
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.