
Electrical installation | 8
Operating instructions CMVpro 125-400 ATEX | Version 1-en
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Motor type
Connection options
L1
L2
L3
N
PE
1
2
4
3
Depending on the execution, an electric motor can either be connected directly
(1) to the electrical mains or can/shall be operated with a FC.
The FC is either
• directly attached to the electric motor (2, order option),
• mounted on the fan support (3, order option),
• or installed separately (4, customer solution).
NOTICE
Risk of damaging the frequency converter
Do not manipulate the isolation switch when the electric motor is running if con-
nection option 4 is used.