Description of the Software Modules and Parameters
Parameter manual b maXX BM3000
Document no.: 5.12001.07
695
of 820
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' Z175.2–, 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 Z6.29– will trigger Error 205 "I
2
t Overload".
Also see ZOverload monitoring of the motor (I
2
t)– 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
See also ZOverload monitoring of the motor (I
2
t)– from page 731
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
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