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16
Control potentiometers
The control potentiometers can be adjusted using a screwdriver. By default, all potentiometers are in their middle position.
MOTOR I
NOM
ACC/DEC
HI FREQ
ACS55-01x-
-01A4-x
0,7
-02A2-x
1,1
-04A3-x
2,2
-07A6-x
3,8
-09A8-x
4,9
MOTOR I NOM
50
Calculate MOTOR I NOM with the equation below or pick a value from the MOTOR I NOM selection chart
below. ACS55 estimates the temperature of the motor based on the measured output current and the
defined motor nominal current. The drive trips if the estimated temperature implies motor overheating.
Note: If motor cables are long causing large capacitive currents, it might be necessary to increase the
MOTOR I NOM setting.
Defines the acceleration and deceleration time from minimum to maximum frequency and vice versa in
seconds. The longer the ACC/DEC time, the more slowly ACS55 will follow the given reference.
Limits the output frequency to a desired value between nominal frequency and nominal frequency + 70 Hz.
To use this potentiometer, turn the high frequency mode on with the HI FREQ DIP switch. See
on page 14.
MOTOR I NOM selection chart
Motor nominal current (A)
0,8
1,0
1,2
1,4
1,3
1,5
1,8
2,0
2,2
2,4
2,6
3,0
3,5
4,0 4,3
4,7
4,6
5,3
6,1
6,8
7,6
8,4
5,9
6,9
7,8
8,8
9,8 10,8
60
70
80
90
100 110 120 130 140 150%
MOTOR I NOM (%) =
1,6
1,8
2,0 2,1
2,6 2,8
3,0
3,3
5,2
5,6
6,0
6,5
9,3
10,2
11,4
12,0
13,3
14,7
Motor nominal current [A]
• 100%
ACS55 nominal current [A]
ACC/DEC time
Ref. [%]
100
ACC/DEC
EN
DIP switches
t
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