Lenze EMB934 Serie Manuel D'instructions page 102

5 Electrical installation
Important notes
Electrical isolation
5.1.2 Electrical isolation
The control connections (X2) are double-insulated (safe electrical isolation to EN 50178).
The protection against accidental contact is ensured without any further measures.
If an external voltage supply (24V DC) is used, the insulation level of the regenerative
power supply depends on the insulation level of the voltage source.
Mains Mains
synchronisation y
Fig.13-1
102
Mains
L1 L2
L3' Power circuit
L2'
L1'
L3.2
L2.2
L1.2
Control circuit
E1 59
Basic insulation Basic insulation
D Double / reinforced insulation bl / i f
Electrical isolation
DC bus
L3 +UG -UG PE
39 A2 A1 PE
d i l ti
EDBMB9340 DE/EN/FR 9.0