Berges electronic
•
D–51709 Marienheide-Rodt
•
Tel. 02264/17-0
•
Fax 02264/17126
Operating manual
21.12.98
ACP 3000 — 0.37–15.0
04_GB
42
This parameter is used to set the frequency at which full voltage is delivered to the motor.
Thereby, the output volts/hertz ratio of the inverter is adjusted. Programmable from 26.00
to 400.0 Hz. It is factory set to the base frequency of the motor, which is 50 Hz for most
European made induction motors. Setting FKNEE to a higher value can reduce motor loss-
es at low frequencies.
◊
Value range: 26.00–400.0 Hz
Default: 50.00 Hz
This parameter sets the range of frequencies (above and below) associated with each of
the skip frequencies. Skip bands are used to avoid mechanical resonances in a drive sys-
tem. The deviation is adjustable in 0.05 Hz increments from 0.20 Hz to 20.00 Hz. The fac-
tory setting is 1.00 Hz equating to an overall 2 Hz band.
◊
Value range: 0.20–20.00 Hz
Default: 1.00 Hz
These three (3) parameters set the center frequency of the skip bands over which normal
operation will not be allowed. The inverter will ramp through these frequencies, but not set-
tle on them. Programmable from 0.00 to 99.95 Hz in 0.05 Hz increments and 0.1 Hz above
this frequency.
◊
Value range: 0.00–400.0 Hz
Default: 0.00 Hz
This sets the voltage the inverter delivers to the motor terminals at the setting of
53-FKNEE
.
230 V models are programmable from 185 to 240 volts, and 400 V models from 370 to 480
volts. The inverter attempts to regulate the output voltage with a changing input voltage to
better than 5%.
◊
Value ranges: 185–240 V; 370–480 V
Default: 230 or 400 V
-If the inverter is used to control a motor that is significantly smaller than the drive rating,
the motor may draw excessive current in an unloaded condition. This will be evident by a
15-LOAD
reading that is high when the motor is unloaded and reduces when a load is ap-
plied. If this condition occurs, adjust parameter
5B-MSAT
, in small increments, to a lower
percentage until parameter
15-LOAD
reads 30–45% in an unloaded condition. Consult
BERGES for more information.
◊
Value range: 15–80%
Default: 47%
53-FKNEE – V/Hz Knee Frequency
[Hz]
2P
54-SKBND – Skip Frequency Hysteresis Band
[Hz]
2P
55-SK1
– Skip Frequency 1
[Hz]
2P
56-SK2
– Skip Frequency 2
[Hz]
2P
57-SK3
– Skip Frequency 3
[Hz]
2P
59-MVOLT – Rated Motor Voltage
[V]
2P
5B-MSAT
– Motor Saturation Level
[%]
2P
61-LTLF
– Load Torque Limit Forward
[%]
2P
62-LTLR
– Load Torque Limit Reverse
[%]
2P
63-RTLF
– Regenerative Torque Limit Forward
[%]
2P
64-RTLR
– Regenerative Torque Limit Reverse
[%]
2P
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