Description of the Software Modules and Parameters
Parameter manual
b maXX
BM3000
Document no.: 5.12001.07
695
4
At nominal load devices (peak current = nominal current) the current is limited to nominal
current. Additional monitoring and limitation is not required.
The Ixt-actual value is not calculated at nominal load devices and there is no current re-
duction.
This parameter is important if the PU overload monitoring is not executed via the tem-
perature model (see "Status PU temperature model'
, only.
6.28
Motor I
2
t actual value
The output of the I
2
t model (PT
1
element) to monitor the overload monitoring of the motor.
Exceeding of
2
t Overload".
Also see
Overload monitoring of the motor (I
from page 731. to the functionality of
the l
2
t motor.
Standardization:
100%
Maximum thermal load of the motor
6.29
Motor I
2
t threshold
2
t warning limit at motor overload
Overload monitoring of the motor (I
Standardization:
100%
Maximum thermal load of the motor
6.30
Motor apparent current smoothed
Total current actual value in 2 ms cycle calculated from filtered d and q current.
(Filter time constant 1.25 ms)
6.32
Motor real power smoothed
(from controller firmware V1.09)
From the motor-voltages and currents calculated instantaneous value of the electrical ef-
fective power
p
e real
, in kW. The calculation is based on a symmetrical three-phase sys-
tem.
whereat the following internal sizes are determined in the controller:
i
s
,
i
s
Motor currents in
-coordinates (in A, instantaneous values).
e real
1000
3
2
---
u
s
i
s
u
s
i
s
+
=
in kW
