Parameters Of Reference Frequency (Group F1) - Emerson EV2000 Series User Manual

46 Chapter 5 Parameter Introductions
F0.21 Cut-off point used for
manual torque boost
F0.21 defines the ratio of the cut-off frequency used for
manual torque boost to the basic operating
frequency(defined by F0.06), as shown in Fig. 5-3 as fz.
This cut-off frequency adapts to any V/F curve defined
by F0.14.
5.2 Parameters of Reference Frequency
(Group F1)
F1.00 Reference frequency
curve selection
F1.01 Gain of reference
frequency selector
F1.02 Reference constant of
filter
F1.03 Max input pulse frequency
F1.04 Min reference of curve 1
F1.05 Frequency corresponding
to the Min reference of curve 1
F1.06 Max reference of curve 1
F1.07 Frequency corresponding
to the Max reference of curve 1
F1.08 Min reference of curve 2
F1.09 Frequency corresponding
to the Min reference of curve 2
F1.10 Max reference of curve 2
F1.11 Frequency corresponding
to the Max reference of curve 2
When VCI or CCI or pulse input(PULSE) is selected, the
relationship between reference and the preset frequency
is given below:
Ref.
Filter Amplify
selection
F1.02
F1.01
F0.00
Fig. 5-7 Relationship between reference and the preset
Reference frequency signal is filtered and amplified, and
then its relationship with the preset frequency is
determined by Curve 1 or 2. Curve 1 is defined by
F1.04~F1.07, and curve 2 is defined by F1.08~F1.11.
Range:0~50% 【 10.0% 】
Range:000~111 【 000 】
Range:0.00~9.99
【 1.00 】
Range:0.01~50.00s
【 0.50s 】
Range:0.1~50.0kHz
【 10.0kHz 】
Range:0.0%~100.0%
【 0.0% 】
Range:0.0~650.0Hz
【 0.00Hz 】
Range:0.0%~100.0%
【 100.0% 】
Range:0.0~650.0Hz
【 50.00Hz 】
Range:0.0%~100.0%
【 0.0% 】
Range:0.0~650.0Hz
【 0.00Hz 】
Range:0.0%~100.0%
【 100.0% 】
Range:0.0~650.0Hz
【 50.00Hz 】
A
Set Freq. curve
Preset frequency
or select F1.00
P
frequency
EV2000 Series Universal Variable Speed Drive User Manual
Positive and negative characteristics are shown in Fig.
5-8.
Reference freq.
f
max
f
min
P
max
A
max
(1) Positive
P
pulse terminal input
:
P
A
: Min. reference
min
min
f
: Freq.corresponding
min
to Min reference
Fig. 5-8 Output frequency curve
Analog input value(A) is a percentage without unit, and
100% corresponds to 10V or 20mA. Pulse frequency(P)
is also a percentage without unit, and 100%
corresponds to the Max pulse frequency defined by
F1.03.
F1.02 defines the time constant of the filter used by the
reference selector. The input signal is filtered and the
bigger the time constant, the higher the immunity level,
but the response time is prolonged with the increase of
the time constant. That is, the smaller the time constant,
the shorter the response time, but the lower the
immunity level.
F1.00 is used to select the output frequency curve when
VCI, CCI or PULSE input is selected, as shown in
Fig.5-9.
A B
C D
Fig. 5-9 Frequency curve selection
Where,
A: thousand's place B: Hundred's place
C: Ten's place D: Unit's place
For example, the requirements are:
Reference freq.
f
max
f
min
P
P
min
A
A
min
(2) Negative
A
: Reference of analog signal
of VCI or CCI
P
A
: Max. reference
max max
f
: Freq.corresponding
max
to Max reference
VCI frequency curve selection
0 : Curve 1
0 : Curve 2
CCI frequency curve selection
0 : Curve 1
0 : Curve 2
PULSE frequency curve selection
0 : Curve 1
0 : Curve 2
Reserved
P P
max
A A
max