Lenze 8400 - Manual (Page 157)

Electrical installation
Important notes
Electrical isolation
6

157 EDS84ASC552 EN 9.1
6.1.1 Electrical isolation
The protective insulation of the ”8400 Inverter Drives” controllers is implemented
according to EN 61800-5-1. The following illustration shows the insulation concept.
X105 X105 X105
X106 X106 X106
X100 X100 X100
MCI MCI MCI
X4
X4 X4
X7
X5 X5
X8
X10
X6 X6 X6 X6
X6 X6
X3 X3
X3
X1
X1 X1
X1
X1 X1
X105 X105 X105
X106 X106 X106
X100 X100 X100
MMI MMI MMI
X100 X100 X100 X101 X101 X101
Ext.
DC Ext.
DC Ext.
DC
   ‚ ‚ ‚
X100 X100 X107 X107
E84AV ... SC E84AV ... HC E84AV ... TC
8400SLC005
Fig. 6-1 Electrical isolation between power terminals, control terminals and housing

Note!
Ensure trouble-free operation
Execute the wiring in such a way that the potential islands remain separated.

Note!
If the terminal X106 is used, e.g. to connect an external PTC thermistor or a
thermal contact, ensure at least one basic insulation to the motor or mains
potential to not restrict the protective separation of the control terminals.

Note!
If terminal X107 is used for connecting a motor holding brake, at least one
basic insulation to the motor or mains potential has to be provided, so that the
protective separation of the control terminals is not limited.
Legend
Isolation by functional insulation
I
Isolation by basic insulation
II
Safe isolation by double or reinforced insulation
Protection against accidental contact is guaranteed without any further measures.