Moeller DF51 - Limit and Target Values

Setting parameters
10/05 AWB8230-1541GB
66
Limit and target values
Base frequency
The base frequency is the frequency at which the output voltage
has its maximum value. For standard applications, PNU A003
contains the motor’s rated frequency as base frequency
(a section “Motor data”, page 64).
End frequency
If a constant-voltage frequency range exists beyond the transition
frequency set with PNU A003 define this range with PNU A004.
The maximum frequency must not be smaller than the base
frequency.
Increased starting frequency
For applications with a high static friction (such as conveyor belts
and lifting equipment) increase the starting frequency with
PNU 082. The motor then starts directly with the frequency value
set here.
Example:
0 to 10 V correspond with 0 to 50 Hz. PNU b082 = 5 Hz. The
reference value range is 1 to 10 V.
Figure 68: Base frequency = maximum frequency
f
1
: Base frequency
PNU Name RUN b031
= 10
Value DS
A003 Base
frequency
– – 30 – 400 Hz,
up to value of
PNU A004 [Hz]
(motor’s rated
frequency)
50
{60}
A203
A004 End frequency
(fmax)
– – 30 – 400 Hz 50
{60}
A204
1) 60 at DF51-320-…
Figure 69: Base and maximum frequency
f
1
: Base frequency
f
2
: Maximum frequency
0
f
1
100
[%]
U
f
[Hz]
A004
A003
0
f
1
f
2
100
[%]
U
f
[Hz]
A004A003
Figure 70: Increased starting frequency
h
Analog reference values below the response threshold are
not taken into account.
0
f
1
100
[%]
U
f
[Hz]
B082
9.90.5