Description of the Software Modules and Parameters
Parameter manual
b maXX
BM3000
Document no.: 5.12001.07
127
4
107.13
Nominal frequency
Display of the motor nominal frequency in Hz. This value is required for the control sys-
tem. If the motor has no electronic identification plate, the nominal frequency must be en-
tered.
107.14
Magnetic current
Magnetizing current I
d
for asynchronous motors. If the motor has no electronic identifica-
tion plate, the magnetizing current must be entered. If the motor type is not known, I
d
can
be found from the identification plate / motor data sheet.
If Id is not known, it can be calculated approximately:
Where:
|
I
| = Motor nominal current (
)
cos
n
= Power factor (
)
k = 1.0 to 1.3
It corresponds to the nominal current I
d
at IPMSM (see
Synchronous motor with interior
on page 153). The Motor constant K (
) used for adjust-
ment of the MTPA characteristic can be calculated from the Nominal current I (
)
and the nominal current I
d
.
107.15
Slip frequency (cold)
(This is relevant at asynchronous motors with an encoder if the temperature monitoring
is activated,
Slip frequency of the motor at nominal torque current and nominal flux (magnetic flux =
100%) accordant to slip temperature (cold)
. The parameters
107.15
and
support the temperature adaption characteristic of the slip frequency. Refer to
"Slip frequency temperature actual value"
.
The cold slip frequency must be lower than the warm slip frequency (
).
At asynchronous motors without an electronic type plate the parameter must be set man-
ually.
107.16
Slip frequency (warm)
(this is relevant at asynchronous motors with encoder, only)
Slip frequency of the motor at nominal torque current and nominal flux (magnetic flux =
100%) according to the slip temperature (warm)
. The parameters
107.16
and
I
d
I
1
k
n
cos
2
–
=
