5-40
Motor, Mechanical Axis System, Measuring Systems
MPH-02, MPB-02, MPD-02
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
For asynchronous motors the value for P-0-0534 is determined by:
4043
0
P
0534
0
P
−
−
=
−
−
P-0-0534:
voltage loop integral action time (in ms)
P-0-4043:
rotor time constant (in ms), see p.5-40
Fig. 5-46: Calculating the value for P-0-0534 for asynchronous motors
The parameter
P-0-0535, Motor voltage at no load
takes effect in field
weakening operation.
→
value to be set is "80" (in %)
Note:
For linear motors this parameter is irrelevant. Its default value
mustn’t be changed!
The parameter
P-0-0536, Motor voltage max.
takes effect in field
weakening operation.
→
value to be set is "90" (in %)
Note:
For linear motors this parameter is irrelevant. Its default value
mustn’t be changed!
Determining Other Parameter Values only Relevant for
Asynchronous Motors
The value for parameter
P-0-4004, Magnetizing current
is the rms value
of the motor magnetizing current.
Mag
I
4004
0
P
=
−
−
P-0-4004: magnetizing current (rms value in A)
I
Mag
:
indicated magnetizing current (rms value in A)
Fig. 5-47: Calculating the value for P-0-4004
If there hasn’t any value been indicated in the output data of the
asynchronous motor, the following approximation can be used for
calculation:
Nenn
2
I
)
(cos
1
4004
0
P
∗
−
=
−
−
ϕ
P-0-4004: magnetizing current (rms value in A)
I
Nenn
:
rated current of the motor (rms value in A)
cos
ϕ:
power factor at rated load
Fig. 5-48: Calculating the value for P-0-4004 by means of approximation
The parameter
P-0-0532, Premagnetization factor
influences the value
of the no-load current (magnetizing current). This value indicates how
many percent of the magnetizing current are flowing when the motor has
no load.
The following values are recommended:
Drive application
Value for P-0-0532
servo application
100
spindle application
50
Fig. 5-49:
Recommended values for the premagnetization factor
This parameter determines to which degree the slip in the motor is
increased depending on the temperature rise of the motor windings. The
P-0-0535, Motor voltage at no
load
P-0-0536, Motor voltage max.
P-0-4004, Magnetizing current
P-0-0532, Premagnetization
factor
P-0-0530, Slip increase
Courtesy
of
CMA/Flodyne/Hydradyne
▪
Motion
Control
▪
Hydraulic
▪
Pneumatic
▪
Electrical
▪
Mechanical
▪
(800)
426-5480
▪
www.cmafh.com