GB - 28
Operating of the unit
Speed search
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 to 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
When connecting the frequency inverter onto a decelerating motor, an error can
be triggered by the differing rotating field frequencies. With 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 = 12 means after reset and after auto-reset UP
Adjustment range:
0...15
Value Condition
Resolution:
1
0
function off
Factory setting:
8
1
at control release
Customer adjustment:
_______
2
at switch on
4
after reset
8
after Auto-Reset UP
Summary of Contents for COMBIVERT M4
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