38
GB
Operation of the Unit
Speed search
When connecting the frequency inverter onto a decelerating motor, an
error can be triggered by the differing rotating field frequencies. At
activated speed search the inverter searches the actual motor speed,
adapts its output frequency and accelerates with the adjusted ramp onto
the given set value. During speed search CP.2 displays "SSF". The
parameter determines, under what conditions the functions operate. With
several conditions the sum of the value must be entered.
Example: CP.16 = 5 means at control releas and after reset
Adjustment range:
0...7
Value Condtion
Resolution:
1
0
function off
Factory setting:
0
1
at control release
Customer adjustment: _______
2
at switch on
4
after reset
Voltage stabilization
This parameter can adjust a regulated output voltage in relation to the
rated frequency. Because of this voltage variations at the input as well as
in the intermediate circuit only have a small influence on the output voltage
(U/f-characteristic). The function allows, among other things, an adaption
of the output voltage onto the special motors. In the example below the
output voltage is stabilized onto 230 V (0% boost).
Adjustment range:150...649 V, oFF
Resolution:
1 V
Factory setting:
oFF
Customer adjustment: _______ V
250 V
CP.17 = 230 V
190 V
CP.5 = 50 Hz
f
U
N
/U
A
U
A
at U
N
= 250V stabilized
U
A
at U
N
= 250V unstabilized
U
A
at U
N
= 190V stabilized
U
A
at U
N
= 190V unstabilized
U
A
= output voltage
U
N
= mains voltage