Electrical installation
Important notes
Protection of persons
5
l
30
EDBMB935X EN 8.0
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.
5.1.1 Protection of persons
{ Danger!
Before carrying out operations on the controller, check whether all
power terminals are in a deenergised state:
ƒ After power−off the power terminals +U
G
, −U
G
and RB1, RB2 still
carry dangerous voltages for 3 minutes.
ƒ S1, S2 and S3 have a mains potential!
– Wait for at least 3 minutes before changing over the switches.
ƒ During braking operation the DC−bus voltage is still applied after
power−off:
– In order to avoid that energy is fed into the DC bus further on,
controller inhibit has to be set for all controllers in the
interconnection.
– Observe that the drive system coasts down after controller
inhibit has been set.
Replacing defective fuses
Replace defective fuses only in the deenergised state with the type specified.
5.1.2 Device protection
In the case of condensation, only connect the controllers to the mains voltage
if the humidity has evaporated again.
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