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Commissioning
4.2 Commissioning with BOP-2 operator panel
Select the control mode:
● VF LIN: U/f control with linear characteristic
● VF LIN F: Flux current control (FCC)
● VF QUAD: U/f control with square-law characteristic
● SPD N EN: Sensorless vector control
Select a suitable control mode
Control mode
U/f control with linear or square-law characteris-
Closed-loop con-
•
trol characteristics
•
•
•
Application exam-
•
ples
Motors that can be
operated
Power Modules
that can be oper-
ated
Max. output fre-
quency
Commissioning
•
36
tic
Flux current control (FCC)
Typical correction time after a speed change:
100 ms ... 200 ms
Typical correc-
tion time after a
load surge:
500 ms
The control
mode is suitable
to address the
following re-
quirements:
–
Motor power
ratings < 45 kW
–
Ramp-up time 0 → Rated speed (de-
pendent on the rated motor power):
1 s (0.1 kW) ... 10 s (45 kW)
–
Applications with increasing load torque
without load surges
The control mode is insensitive with respect
to inaccurate motor data settings
Pumps, fans, and compressors with flow
characteristic
Induction motors
550 Hz
Contrary to vector control, no speed control-
ler has to be set
Vector control without encoder
Typical correction time after a speed change:
•
< 100 ms
Typical correction
•
time after a load
surge: 200 ms
The vector control
•
controls and limits
the motor torque
Torque accuracy
•
that can be
achieved: ± 5 % for
15 % ... 100 % of
the rated speed
We recommend vector control for the following
•
applications:
–
Motor power ratings > 11 kW
–
For load surges 10 % ... >100 % of the rat-
ed motor torque
The vector control is necessary for a ramp-up
•
time 0 → Rated speed (dependent on the rated
motor power):
< 1 s (0.1 kW) ... < 10 s (250 kW).
Pumps and compressors with displacement
•
machines
Induction, synchronous and reluctance motors
No restrictions
150 Hz with PM330 Power Module
Compact Operating Instructions, 01/2017, A5E38815802B AA
240 Hz
CU230P-2 Control Units
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