Electrical Installation | 7
Operating instructions CMVpro 125-400 | Version 1-en
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7.3.2
Frequency converter (FC) parameterization
NOTICE
Risk of damage due to erroneous parameterization
Unpredictable fan behavior resulting in damage.
u
Carry out parameterization carefully according to the FC operating instruc-
tions. The specialist shall be familiar with the FC. If necessary, consult the
supplier.
u
For basic setup, enter the motor data according to the nameplate on the
electric motor.
u
Enter the maximum frequency/speed limit according to the fan nameplate or
technical data sheet.
u
Enter the acceleration and braking times with regard to the following table.
u
Record the parameters that were entered.
To prevent mechanically overloading the fan, observe these minimum permissi-
ble acceleration and braking times:
Electric motor nominal power [kW]
Acceleration/braking time [s]
< 1.5
min. 15
> 1.5
min. 30
Depending on the maximum available starting current of the frequency con-
verter, a longer acceleration time could be necessary to avoid an error mes-
sage.
Parameterization for PM motors
Parameterization for PM motors differs significantly from three-phase motors.
The motor manufacturer offers support for this.
7.3.3
Connecting the electric motor to a frequency converter (FC)
U
V
W
PE
M
3~
L1
L2
L3
PE
FU
Fig. 30:
Connection principle
Observe the fan manufacturer’s EMC guide.
Comply with the instructions in the FC operating instructions.
Observe the max-
imum permissible length of the motor connection cable between FC and
electric motor.