208 Actual signals and parameters
2503 CRIT SPEED 1
HI
Defines the maximum limit for critical output frequency
range 1
0.0 Hz
0.0…500.0 Hz
Limit in Hz. The value cannot be below the minimum
(parameter
).
1 = 0.1 Hz
2504 CRIT SPEED 2
LO
.
0.0 Hz
0.0…500.0 Hz
1 = 0.1 Hz
2505 CRIT SPEED 2
HI
.
0.0 Hz
0.0…500.0 Hz
1 = 0.1 Hz
2506 CRIT SPEED 3
LO
.
0.0 Hz
0.0…500.0 Hz
1 = 0.1 Hz
2507 CRIT SPEED 3
HI
.
0.0 Hz
0.0…500.0 Hz
1 = 0.1 Hz
26 MOTOR
CONTROL
Motor control variables
2603 IR COMP
VOLT
Defines the output voltage boost at zero speed (IR
compensation). The function is useful in applications with a
high break-away torque when vector control cannot be
applied.
To prevent overheating, set IR compensation voltage as low
as possible.
The figure below illustrates the IR compensation.
Type
dependent
0.0…100.0 V
Voltage boost
1 = 0.1 V
All parameters
No.
Name/Value
Description
Def/FbEq
A
B
A = IR compensated
B = No compensation
Typical IR compensation values:
P
N
(kW)
0.37 0.75 2.2 4.0 7.5
200…240
V units
IR comp (V)
8.4
7.7 5.6 8.4 N/A
380…480
V units
IR comp (V)
14
14
5.6 8.4 7
Motor
voltage
f
(Hz)
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Industry Automation
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