Setting parameters
10/05 AWB8230-1541GB
64
Motor data
The motor’s ratings plate contains the data you will need to
parameterize the frequency inverter.
The motor speed is determined by the relationship between
frequency and rotor speed:
In the above example, the resulting value for PNU H004 is 4. (The
slight error is caused by the slip – a deviation between stator field
and rotor speed – inherent to asynchronous motors.)
Number of poles = p x 2 = 4
Figure 65: Parameters from motor’s ratings plate
230 / 400 V
4.0 / 2.3
0,75
0.67
ϕ
cos
kW
min
-1
1410 50 Hz
A
PNU H003
PNU H007
PNU H004
h
Note about PNU H004/H204:
The number of poles is determined by the motor’s physical
design and must be even as the poles are arranged in
pairs consisting of a North and a South pole.
n: Speed [r.p.m.]
f:Frequency [Hz]
p: Number of pole pairs (number
of poles/2)
50 Hz x 60
1
p =
f
=
Hz
.
min
Q 2
n 1410 r.p.m.
n =
f
p
PNU Name RUN b031
= 10
Value Function DS
H003 Motor –
assigned rating
[kW]/{HP} at
rated voltage
(Ue)
– – 0.2; 0.4; 0.55;
0.75; 1.1; 1.5;
2.2; 3.0; 4.0;
5.5; 7.5; 11.0
{0.2; 0.4; 0.75;
1.5; 2.2; 3.7;
5.5; 7.5; 11.0}
Default
depends on
rated voltage
and type
rating.
The default setting (DS) is the assigned motor rating here, for example
0.4 = 0.37 kW. The connected motor rating should be only one order
lower (for example 0.25 kW connected to a DF51-…-037). If the
connected load is too small, the motor may suffer thermal overload.
–
H203
H004 Motor –
number of
poles
– – 2, 4, 6, 8 Number of motor poles (a Note) 4
H204
H006 Motor –
stabilization
constant
j j 0 – 255 0 = function is not enabled
If the motor runs unstably, you can improve its operation with
PNU H006. Check first whether the set motor rating (PNU H003) and
number of poles (PNU H004) correspond with the connected motor. If
the motor’s rating is higher than the frequency inverter’s output power,
reduce the stability constant. If the motor is not running smoothly, you
can also reduce the pulse frequency (PNU b083) or change the output
voltage (PNU A045).
100
H206
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